processes

Abstract
Gaius Shaver, 2022 Above ground plant biomass in a mesic acidic tussock tundra experimental site 2015, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/c733e2d9526616a20711f3856840344a
Above ground plant biomass and leaf area were measured in a tussock tundra experimental site. The plots were set up in 1981 and have been harvested in previous years (See Shaver and Chapin Ecological Monographs, 61(1), 1991 pp.1-31.) This file contains the biomass numbers for each harvested quadrat and per cent carbon and nitrogen and phosphorous summaries for control and fertilized plots.
AON Imnavait
Abstract
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2009 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2009. 10.6073/pasta/89b3bbfa4d6a4cdaa9f46adf1dc3e38c
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2013 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2013. 10.6073/pasta/8a56d914f1e5621be1c433824b10751b
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2007 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2007. 10.6073/pasta/36867e3f4a87f7e795887eb3b6a35d76
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2014 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2014. 10.6073/pasta/a96811cb3f27a1ca85e942a6cd19055c
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2012 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2012. 10.6073/pasta/6ccaa43585d7948838562520f6b95c07
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2008 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2008. 10.6073/pasta/a3d83e1c21f8257016a77cb89a714105
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2009 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2009. 10.6073/pasta/3868b61c92b399edc6929f814a1da7ef
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
Kevin Griffin, M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2008 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2008. 10.6073/pasta/03a76c6fcb26107983a7f09aa9d29c62
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2012 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2012. 10.6073/pasta/813e4116ee7879035bdb9a35aae381a6
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2013 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2013. 10.6073/pasta/3eb47a3aab539531b90a7336aff56e30
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
Kevin Griffin, M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2007 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2005. 10.6073/pasta/834c43e51dc5647a1af9922f9d246498
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2007 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2007. 10.6073/pasta/29f7e2c8ff4c5d325f984140f6a798f7
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
Kevin Griffin, M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2010 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2010. 10.6073/pasta/ba4d125620aecd9e66f267b1c87f3a63
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2011 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2011. 10.6073/pasta/6cb2537adeeb317add88046b3475a03a
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
Kevin Griffin, M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2009 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2009. 10.6073/pasta/190d7d196ff9a3bf5d9d3b170641c0f3
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2014 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2014. 10.6073/pasta/da3ed80f42ca4245f39e5ded1fd0a5e2
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2010 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2010. 10.6073/pasta/8342b7e66eb89f79df17e3111e12f876
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2008 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2008. 10.6073/pasta/874dd6c8657c49457c25c410bd5e9040
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2014 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2014. 10.6073/pasta/65c267593c2cc3f16653c4536b9d956f
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network project that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2013 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2013. 10.6073/pasta/1088c31ca72d30644f71b622b00ff2bc
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2011 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2011. 10.6073/pasta/20e56860e067b13f44be60e0309434ce
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2010 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2010. 10.6073/pasta/101857a6e7cc539c7d46cea3c2d07936
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
Kevin Griffin, M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2007 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2007. 10.6073/pasta/7ad8f527a54c8d7f1c51c57f1b375d32
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2011 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2011. 10.6073/pasta/b32f11b0bc37c8625fa0a4ba05e13f1d
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
George Kling, 2007 Imnavait Watershed Thaw Depth Survey Summary for 2003 to present, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/022a6e4bfee8329b5fd40b7691494e1d
Thaw depth was measured using a steel probe in the Imnavait Creek watershed, near Toolik Lake, Alaska. The thaw grid includes measurements made from the valley bottom (on both sides of the stream), up the hillslope to the hilltop (watershed boundary). The thaw grid is near Imnavait water tracks 7 and 8, and measurements have been made from the 2003 season until present. Two surveys are conducted each summer, on 2 July and on 11 August (plus or minus 1-2 days on either side of those dates).
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2012 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2012. 10.6073/pasta/219e9c83b826659104b112a51a4e3ee4
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2017 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2015. 10.6073/pasta/0c1736202ade8cd1acf9a29fa7f4da63
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of obervatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data  points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2018 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2016. 10.6073/pasta/000c00519355c08c59ed45494be8fd80
The Biocomplexity Station, now known as the Tussock Station, was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska.  The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations.  These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of car
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2018 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2016. 10.6073/pasta/2bc85ddbd13c7c2d064b76e782dde859
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2018 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2015. 10.6073/pasta/a6a7c2ac8cd87d30a2a9cd19fe298a2e
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2018 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2016. 10.6073/pasta/59e67bf3d58d26f8c931dbb75ea4c2cf
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of obervatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data  points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2018 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2015. 10.6073/pasta/2ffd814b0953d1147a59e62888ad977b
The Biocomplexity Station, now known as the Tussock Station, was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska.  The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations.  These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of car
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2019 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2017. 10.6073/pasta/93e9a05b00e0e619b3942472ba1f7796
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Kevin Griffin, Gaius Shaver, 2019 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2018 - Provisional. 10.6073/pasta/bf5b2104c5bda4284b84dee76e5fdfd9
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2019 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2017. 10.6073/pasta/51fa67b4cc08f5817de1f32d8e63b5bf
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of obervatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data  points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2019 Eddy Flux Measurements, Fen Station, Imnavait Creek, Alaska - 2018 - Provisional. 10.6073/pasta/d2b3c0a30a4d9c26feeb5495fd8d32c8
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of obervatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data  points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2019 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2017. 10.6073/pasta/3cd4d50c3765a0639fad42bce20cb413
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Eugenie Euskirchen, Gaius Shaver, 2019 Eddy Flux Measurements, Ridge Station, Imnavait Creek, Alaska - 2018 - Provisional. 10.6073/pasta/55fdb1ea7a5b9121f5aced573c97a3a6
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnavait Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
Kevin Griffin, M. Syndonia Bret-Harte, Gaius Shaver, Eugenie Euskirchen, 2007 Eddy Flux Measurements, Tussock Station, Imnavait Creek, Alaska - 2006. 10.6073/pasta/428373a65cdcd2895b5c7e64302221b4
The Biocomplexity Station was established in 2005 to measure landscape-level carbon, water and energy balances at Imnavait Creek, Alaska. The station is now contributing valuable data to the Arctic Observing Network that was established at two nearby stations. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
Burn Terrestrial Data
Abstract
Michelle Mack, 2011 Burned soil surface radiocarbon values for moss macrofossils plucked from the Anaktuvuk River Fire sites. 10.6073/pasta/728ade46a3372446d391943c97141949
We used radiocarbon dating of the organic soil surface remaining post-fire to examine whether the fire burned into ancient and likely irreplaceable soil C pools. Suprisingly, it did not; all radiocarbon dates from burned soil surfaces contained bomb carbon, setting the maximum age of the burned soil surfaces at ~50 years.
Michelle Mack, 2011 Characterization of burned and unburned moist acidic tundra soils for estimating C and N loss from the 2007 Anaktuvuk River Fire, sampled in 2008.. 10.6073/pasta/9043cfa962143905d03b4ab67acc8fa7
This file contains the soil profile data for burned and unburned moist acidic tundra sites used to estimate C and N loss from the Anaktuvuk River Fire (2007). These sites were sampled in summer of 2008. Unburned sites were used to develop a method for estimating soil organic layer depth and plant biomass, and for determining the characteristics of unburned soil organic layers. In burned sites, we characterized residual organic soils and used biometric measurements of tussocks to reconstruct pre-fire soil organic layer depth.
Michelle Mack, 2011 Estimates of C and N loss from moist acidic tundra sites burned in the 2007 Anaktuvuk River Fire.. 10.6073/pasta/92512f58a584bca14ceaf04d062f8ee5
Estimated mean pre-fire C and N pools, and C and N loss from 20 sites in the Anaktuvuk River Fire (2007). These sites were sampled in summer of 2008. In each site, we characterized residual organic soils and used biometric relationships developed in unburned sites to reconstruct pre-fire soil organic layer depth, and plant and soil C and N pools. We then estimated fire-driven losses of C and N from plant and soil organic layer pools.
Gaius Shaver, Adrian V Rocha, 2011 Anaktuvuk River Burn Eddy Flux Measurements, 2009 Severe Burn Site, North Slope Alaska. 10.6073/pasta/5554a6eda8082f933709e547811b85dc
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2009 post fire energy and mass exchange at the severe burn site.
Gaius Shaver, Adrian V Rocha, 2013 Anaktuvuk River Burn Eddy Flux Measurements, 2012 Moderate Burn Site, North Slope Alaska. 10.6073/pasta/b5c015dbf57ba3b3ec3ee1d95a663fc5
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2012 post fire energy and mass exchange at the moderate burn site.
Gaius Shaver, Adrian V Rocha, 2013 Anaktuvuk River Burn Eddy Flux Measurements, 2011 Moderate Burn Site, North Slope Alaska. 10.6073/pasta/f7e7d023fbac22d83ad0c2e4ce191650
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2011 post fire energy and mass exchange at the moderate burn site.
Gaius Shaver, Adrian V Rocha, 2011 Anaktuvuk River Burn Eddy Flux Measurements, 2010 Unburned Site, North Slope Alaska. 10.6073/pasta/ff790bd426b262aa7d818ad7f0b2d2a4
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2010 post fire energy and mass exchange at the unburned site.
Gaius Shaver, Adrian V Rocha, 2011 Anaktuvuk River Burn Eddy Flux Measurements, 2009 Unburned Site, North Slope Alaska. 10.6073/pasta/aeb3845bf779ca10f13930e1d6c90105
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2009 post fire energy and mass exchange at the unburned site.
Gaius Shaver, Adrian V Rocha, 2010 Anaktuvuk River Burn Eddy Flux Measurements, 2008 Moderate Burn Site, North Slope Alaska. 10.6073/pasta/19e3802d6738c4b30cf09188a2551b10
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the first post fire growing season's energy and mass exchange at the moderate burn site.
Gaius Shaver, Adrian V Rocha, 2011 Anaktuvuk River Burn Eddy Flux Measurements, 2010 Moderate Burn Site, North Slope Alaska. 10.6073/pasta/abee3157f007a794edb3414e1280d71b
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2010 post fire energy and mass exchange at the moderate burn site.
Gaius Shaver, Adrian V Rocha, 2011 Anaktuvuk River Burn Eddy Flux Measurements, 2009 Moderate Burn Site, North Slope Alaska. 10.6073/pasta/3d912564439309bdf17bc75866179312
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2009 post fire energy and mass exchange at the moderate burn site.
Gaius Shaver, Adrian V Rocha, 2013 Anaktuvuk River Burn Eddy Flux Measurements, 2012 Unburned Site, North Slope Alaska. 10.6073/pasta/67188afe29827f8b3c0277753b2a956a
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2012 post fire energy and mass exchange at the unburned site.
Gaius Shaver, Adrian V Rocha, 2013 Anaktuvuk River Burn Eddy Flux Measurements, 2011 Unburned Site, North Slope Alaska. 10.6073/pasta/913d3843eb71f27bac3f9c97df61573e
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2011 post fire energy and mass exchange at the unburned site.
Gaius Shaver, Adrian V Rocha, 2013 Anaktuvuk River Burn Eddy Flux Measurements, 2011 Severe Burn Site, North Slope Alaska. 10.6073/pasta/d384b812a12e5cfa7fdbb4032cf1abb2
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2011 post fire energy and mass exchange at the severe burn site.
Michelle Mack, 2011 Characterization of burned and unburned moist acidic tundra sites for estimating C and N loss from the 2007 Anaktuvuk River Fire, sampled in 2008.. 10.6073/pasta/81868b65c853d5eb2052d9f1a8397d0d
Burned and unburned moist acidic tundra sites used to estimate C and N loss from the Anaktuvuk River Fire (2007). These sites were sampled in summer of 2008. Unburned sites were used to develop a method for estimating soil organic layer depth and plant biomass, and for determining the characteristics of unburned soil organic layers. In burned sites, we characterized residual organic soils and used biometric measurements of tussocks to reconstruct pre-fire soil organic layer depth.
Adrian V Rocha, Gaius Shaver, 2015 Anaktuvuk River fire scar thaw depth measurements during the 2008 to 2014 growing season. 10.6073/pasta/93121fc86e6fbcf88de4a9350609aed6
The Anaktuvuk River Fire occurred in 2007 on the North Slope of Alaska. In 2008, three eddy covariance towers were established at sites represent ing unburned tundra, moderately burned tundra, and severely burned tundra. Several times during the 2008-2014 growing seasons, thaw depth was measured at approximately 70 points near each of these towers . Data presented here are the individual measurements for each site and date.
Gaius Shaver, James A Laundre, 2014 Summer soil temperature and moisture at the Anaktuvuk River Moderately burned site from 2010 to 2013. 10.6073/pasta/069fa3091323bb3a9a57f8d496a3fe4e
Soil moisture and temperature were recorded at the Anaktuvuk River burn area during the summers from 2010 to 2013. Six sensors were deployed and measured temperature on half-hourly intervals over the summer and into the fall depending on battery function. Sensors were place in a hexagonal shape around a central datalogger. Note that over time sensor depths changed due to frost heave and other environmental factors. All data contained should be treated as suspect where sensors may have been at surface. These sensors were removed August 20, 2013, no replacement sensors were installed.
Gaius Shaver, James A Laundre, 2014 Summer soil temperature and moisture at the Anaktuvuk River Unburned site from 2010 to 2013. 10.6073/pasta/13cfe1cfa528cb7fe15bd8fb672b68d3
Soil moisture and temperature were recorded at the Anaktuvuk River burn area during the summers from 2010 to 2013. Six sensors were deployed and measured temperature on half-hourly intervals over the summer and into the fall depending on battery function. Sensors were place in a hexagonal shape around a central datalogger. Note that over time sensor depths changed due to frost heave and other environmental factors. All data contained should be treated as suspect where sensors may have been at surface. These sensors were removed August 23, 2013, no replacement sensors were installed.
Gaius Shaver, James A Laundre, 2014 Summer soil temperature and moisture at the Anaktuvuk River Severely burned site from 2010 to 2013. 10.6073/pasta/3094e3e293703580c95e17ddce51af65
Soil moisture and temperature were recorded at the Anaktuvuk River burn area during the summers from 2010 to 2013. Six sensors were deployed and measured temperature on half-hourly intervals over the summer and into the fall depending on battery function. Sensors were place in a hexagonal shape around a central data logger. Note that over time sensor depths changed due to frost heave and other environmental factors. All data contained should be treated as suspect where sensors may have been at surface. These sensors were removed August 20, 2013, no replacement sensors were installed.
M. Syndonia Bret-Harte, Michelle Mack, Gaius Shaver, 2013 Above ground plant and below ground stem biomass of samples from the moderately burned site at Anaktuvuk River, Alaska. 10.6073/pasta/6646ac57a7397b9c8d1a2dc3c95a566c
Above ground plant and below ground stem biomass were measured in 2011 from three sites at and around the Anaktuvuk River Burn: severely burned, moderately burned and unburned. These samples were analyzed for carbon and nitrogen concentrations.
Michelle Mack, M. Syndonia Bret-Harte, Gaius Shaver, 2013 Summary of below ground root biomass, carbon and nitrogen concentrations from the Anaktuvuk River Fire site in 2011. 10.6073/pasta/9ae19f41326bf63e8d4335d78d4a70d4
A summary of below ground root biomass, carbon and nitrogen concentrations, measured at three sites at and around the Anaktuvuk River Burn: severely burned, moderately burned and unburned.
Michelle Mack, M. Syndonia Bret-Harte, Gaius Shaver, 2013 Soil properties and nutrient concentrations by depth from the Anaktuvuk River Fire site in 2011. 10.6073/pasta/85a9e76b5d579298bc21b19a25b35c38
Below ground soil bulk density, carbon and nitrogen was measured at various depth increments in mineral and organic soil layers at three sites at and around the Anaktuvuk River Burn: severely burned, moderately burned and unburned. This data corresponds with the aboveground biomass and root biomass data files: 2011ARF_AbvgroundBiomassCN, 2011ARF_RootBiomassCN_byDepth, 2011ARF_RootBiomassCN_byQuad, 2011ARF_RootBiomassCN_byQuad.
M. Syndonia Bret-Harte, Michelle Mack, Gaius Shaver, 2013 Above ground plant and below ground stem biomass of samples from the severely burned site of the Anaktuvuk River fire, Alaska. 10.6073/pasta/7f609c982e2e6880f63bab4c3bd5af8d
Above ground plant and below ground stem biomass were measured in 2011 from three sites at and around the Anaktuvuk River Burn: severely burned, moderately burned and unburned. These samples were analyzed for carbon and nitrogen concentrations.
Michelle Mack, M. Syndonia Bret-Harte, Gaius Shaver, 2013 Below ground soil carbon and nitrogen concentrations in quadrats harvested from the Anaktuvuk River Fire site in 2011. 10.6073/pasta/ab77e5fe897f697372048e9b9ca2c216
Summarized below ground soil carbon and nitrogen concentrations measured in quadrats at three sites at and around the Anaktuvuk River Burn: severely burned, moderately burned and unburned. This data corresponds with the aboveground biomass and root biomass data files: 2011ARF_AbvgroundBiomassCN, 2011ARF_RootBiomassCN_byDepth, 2011ARF_RootBiomassCN_byQuad, 2011ARF_SoilCN_byDepth.
Michelle Mack, M. Syndonia Bret-Harte, Gaius Shaver, 2013 Below ground root biomass, carbon and nitrogen concentrations by depth increments from the Anaktuvuk River Fire site in 2011. 10.6073/pasta/7a21a62a4144c3c1d9a3750926bfc6a7
Below ground root biomass was measured by depth increments at three sites at and around the Anaktuvuk River Burn: severely burned, moderately burned and unburned. Roots were also analyzed for carbon and nitrogen concentrations.
M. Syndonia Bret-Harte, Michelle Mack, Gaius Shaver, 2013 Above ground plant and below ground stem biomass of samples from the unburned control site near the Anaktuvuk River fire scar.. 10.6073/pasta/18fcdcaf43451b70610d55da6475b397
Above ground plant and below ground stem biomass were measured in 2011 from three sites at and around the Anaktuvuk River Burn: severely burned, moderately burned and unburned. These samples were analyzed for carbon and nitrogen concentrations.
Adrian V Rocha, Gaius Shaver, 2015 Anaktuvuk River fire scar eriophorum vaginatum flowering during the 2008-2014 growing seasons. 10.6073/pasta/dd7955138eb963a847b861242390a48c
The Anaktuvuk River Fire occurred in 2007 on the North Slope of Alaska. In 2008, three eddy covariance towers were established at sites representing unburned tundra, moderately burned tundra, and severely burned tundra. Eriophorum vaginatum flowers were counted from annual photographs of each site during peak flowering season (6/17-7/20).
Gaius Shaver, Adrian V Rocha, 2010 Anaktuvuk River Burn Eddy Flux Measurements, 2008 Severe Burn Site, North Slope Alaska. 10.6073/pasta/724bd68e01ee9a59b05cdee5cfa14bbd
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the first post fire growing season's energy and mass exchange at the severe burn site.
Adrian V Rocha, Gaius Shaver, 2013 Anaktuvuk River Burn Eddy Flux Measurements, 2012 Severe Burn Site, North Slope Alaska. 10.6073/pasta/ed412a2a1940af95ab4611212200a5c5
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2012 post fire energy and mass exchange at the severe burn site.
Adrian V Rocha, Gaius Shaver, 2015 Anaktuvuk River fire scar canopy reflectance spectra from the 2008-2014 growing seasons, North Slope Alaska.. 10.6073/pasta/ce1f38604169aa052e288f9371a82e92
The Anaktuvuk River Fire occurred in 2007 on the North Slope of Alaska. In 2008, three eddy covariance towers were established at sites represent ing unburned tundra, moderately burned tundra, and severely burned tundra. During the 2008-2014 growing seasons, canopy vegetation within the footprint of each of these towers was scanned with a handheld spectrophotometer several times throughout the growing season. Average reflectance spectra per site and collection day are presented here.
Adrian V Rocha, Gaius Shaver, 2011 Anaktuvuk River Burn Eddy Flux Measurements, 2010 Severe Burn Site, North Slope Alaska. 10.6073/pasta/2330a47db633130f0972bc134e714066
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the 2010 post fire energy and mass exchange at the severe burn site.
Adrian V Rocha, Gaius Shaver, 2010 Anaktuvuk River Burn Eddy Flux Measurements, 2008 Unburned Site, North Slope Alaska.. 10.6073/pasta/48f728d2fe75541c8f4f6827ce8dc039
We deployed three eddy covariance towers along a burn severity gradient (i.e. severely-, moderately-, and un-burned tundra) to monitor post fire Net Ecosystem Exchange of CO2 (NEE) within the large 2007 Anaktuvuk River fire scar during the summer of 2008. This data represents the first post fire growing season's energy and mass exchange at the unburned site.
Adrian V Rocha, 2020 Soil nutrient availability from the 2007 Anaktuvuk River, Alaska, USA fire scar during the 2016 growing season. 10.6073/pasta/e01c5678f825642da7d69260614bdcc2
This file contains plant-available
Adrian V Rocha, 2020 Soil nutrient availability from the 2007 Anaktuvuk River, Alaska, USA fire scar during the 2019 growing season. 10.6073/pasta/76b71bb30f3a2c809eee79ac2023f652
This file contains plant-available
Adrian V Rocha, 2020 Anaktuvuk River, Alaska, USA tussock tundra flowering in response to fire severity, 2008-2015. 10.6073/pasta/54a41c062a42c0538e2a0aa6dd347bdb
Eriophorum vaginatum flower counts from annual photographs at the severe, moderate, and unburned Anaktuvuk River, Alaska, USA flux tower sites during
Adrian V Rocha, 2020 Leaf area index (LAI) recorded from a nitrogen (N), phosphorus (P) and N+P fertilization experiment at the 2007 Anaktuvuk River, Alaska, USA fire scar during the 2016-2019 growing seasons. 10.6073/pasta/06559231aa04fd7fecd661f107985c8f
This file contains leaf area index (LAI) measurements from an  nitrogen (N), phosphorus (P)
Adrian V Rocha, 2020 Point-frame measurments from a nitrogen (N), phosphorus (P) and N+P fertilization experiment at the 2007 Anaktuvuk River, Alaska, USA fire scar during the 2016-2019 growing seasons. 10.6073/pasta/c28d78e8a3c11b52b38cf1f1c01dc671
This file contains point-frame measurements from a
Adrian V Rocha, 2020 Anaktuvuk River Burn Eddy Flux Measurements, Unburned Site, North Slope Alaska, 2013-2019 . 10.6073/pasta/005b8212ff751d8ca30be3350c89bae2
We deployed three eddy covariance towers along a burn severity gradient (i.e.
Adrian V Rocha, 2020 Anaktuvuk River Burn Eddy Flux Measurements, Moderate Site, North Slope Alaska, 2013-2019 . 10.6073/pasta/d9ae45785b04e4083f2429b88568f412
We deployed three eddy covariance towers along a burn severity gradient (i.e.
Adrian V Rocha, 2020 Anaktuvuk River Burn Eddy Flux Measurements, Severe Site, North Slope Alaska, 2013-2019 . 10.6073/pasta/9525403adb8be60bc415f2130f3bda8e
We deployed three eddy covariance towers along a burn severity gradient (i.e.
Adrian V Rocha, 2021 Tussock height and diameter in moist acidic tussock tundra at the site of the 2007 Anaktuvuk River fire scar, and nearby unburned tundra measured in 2016. 10.6073/pasta/1dccd3fdb3aa693f9c2b69a24f8306ed
This dataset consists of Eriophorum vaginatum tussock height and width (diameter) measurements, and was used to evaluate differences in physical strucutre of previously burned tundra (2007 Anaktuvuk River fire) and nearby unburned tundra. At each site, all tussocks that intersected four 100 meter transects were measured from soil surface to tussock top in four cardinal directions, and diameter was measured in two directions.
Adrian V Rocha, 2021 Tussock (Eriophorum vaginatum) density, mortality, and rodent-herbivore activity in moist acidic tussock tundra at the site of the 2007 Anaktuvuk River fire and nearby unburned tundra, measured in 2019. 10.6073/pasta/d25053a5e3d579321688f20558e96753
This dataset consists of tussock density, mortality rates and causes, and an assesment of rodent-herbivore activity levels in previously burned (2007 Anaktuvuk River fire) and unburned tussock tundra. Eriophourm vaginatum tussocks were counted every meter within a 1 square meter quadrat along three transects. Cause of tussock mortality, as well as level of rodent herbivory was assessed for each tussock, and rodent herbivore activity was assessed for each quadrat.
Adrian V Rocha, 2021 Leaf area index (LAI) by plant functional group in moist acidic tussock tundra, at the 2007 Anaktuvuk River fire scar measured in 2017. 10.6073/pasta/b844dc9b8092d7ceaffcaf80aa095ad2
This file contains leaf area index (LAI) based on biomass measurements from an aboveground pluck in the southern portion of the Anaktuvuk River fire scar, and a nearby unburned site in late July 2017. Vegetation was sampled randomly at 10-m intervals along two 100 meter transects at both the burned and unburned sites. Vegetation was sampled within a 10X40 cm quadrat to the mineral layer, and plant material was sorted into new and old aboveground leaf and woody biomass by species.
Adrian V Rocha, 2021 Point-frame measurement of maximum canopy height for plant growth forms at the 2007 Anaktuvuk River Fire scar measured in 2019.. 10.6073/pasta/7afab2d1a528adc58b4a8f6c7d6216f5
This file contains maximum plant heights from point frame measurements made in the southern section of the 2007 Anaktuvuk River fire scar, at a severely burned site and a nearby unburned site. Pin-vegetation contact was recorded using a 0.56 m2 frame with 41 evenly spaced sampling points. Data were collected during peak green in summer 2019.
Rebecca Rowe, 2021 Small mammal captures per 100 trap nights at the 2007 Anaktuvuk River fire scar and nearby unburned site, sampled in 2014, 2017-2019.. 10.6073/pasta/bf951abfd3b0c3c2946b411a2a2d93aa
Small mammals (rodents and shrews) were sampled 7-12 years following the Anaktuvuk River Fire to examine how post-fire ecological changes influence small mammal abundance. Small mammals were snap-trapped in August 2014, 2017-2019 at the site of the 2007 Anaktuvuk River Fire, and a nearby unburned control site. At each site, 120 traps were set in 3 parallel lines spaced 40m apart. Each trap was spaced 10m apart, baited, and set to rodent sign within one meter of the trap station. Traps were checked the following two mornings with all captures collected and sprung traps reset.
Laura Gough, 2021 Eriophorum vaginatum tiller nitrogen content at the 2007 Anaktuvuk River fire scar and nearby unburned tundra measured in 2019.. 10.6073/pasta/0daf62f03df4ebad013eb7849ba55e01
Tillers from 24 Eriophorum vaginatum individuals were sampled in late July 2019 to examine differences in percent nitrogen between previously burned (Anaktuvuk River Fire) and unburned tussocks at a nearby unburned control site. At the burned site tussocks exhibiting evidence of rodent grazing were also sampled to separate herbivore effects from those of the fire. From each tussock, 3-4 new leaves were sampled (as indicated by lack of brown tips) and dried at 60°C for 24 hours, before being ground and analyzed for percent nitrogen.
Adrian V Rocha, 2021 Eriophorum vaginatum rhizome nitrogen content from the 2007 Anaktuvuk River fire scar measured in 2019.. 10.6073/pasta/2a1668c035b2b3f973e6d60b2084d12f
This file contains Eriophorum vaginatum rhizome biomass from a 2017 biomass pluck of previously burned tundra (2007 Anaktuvuk River Fire) and nearby unburned tundra. Rhizome biomass from the pluck was combined with rhizome percent nitrogen estimates (2.47% at the Anaktuvuk River Fire, and 1.05% at the nearby unburned site) to estimate grams of nitrogen per meter squared, to evaluate differences in winter forage quality for the rodent herbivore, Microtus oeconomus. Percent nitrogen estimates were derived from pooled rhizome samples collected from the two sites in late 2018.
Changing Seasonality and Arctic Stream Networks
Abstract
Michael Gooseff, 2013 Peat Inlet well #1 depth in summer 2011. 10.6073/pasta/af320587de86dc41982e3d3db809ea8a
Data on sensor depth gathered from PIn Well 1 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Peat Inlet well #2 depth in summer 2011. 10.6073/pasta/6bf2dbe830671802c5ecb3c495f1f058
Data on sensor depth gathered from PIn Well 2 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 I8 Inlet well #5 depth in summer 2011. 10.6073/pasta/e997565ef86b7feb70be15ee07ad0294
Data on sensor depth gathered from I8In Well 5 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Specific conductance and temperature data from I8 Inlet, near Toolik Field Station, Alaska, summer 2010. 10.6073/pasta/b4a534851f549a690ef2aff85de08d9f
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from I8 Inlet stream, 2010 season.
Michael Gooseff, 2013 Specific conductance and temperature data from I8 Outlet near Toolik Field Station, Alaska, summer 2011. 10.6073/pasta/5799d44b175ed4731ab2f95517b5e00c
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from I8 Outlet stream, 2011 season.
Michael Gooseff, 2013 I8 Inlet well #7 depth in summer 2011. 10.6073/pasta/1085153473ea8df13451b1c0c7fe7bc5
Data on sensor depth gathered from I8In Well 7 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Peat Inlet well #5 depth in summer 2011. 10.6073/pasta/9155d4632738c1328954984fcdd863fe
Data on sensor depth gathered from I8In Well 5 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Discharge data from I8 Outlet near Toolik Field Station, Alaska, summer 2010. 10.6073/pasta/4c5b5e0ebb6979e2ac3b72462c8dc6b3
As a part of the CSASN project, daily average discharge was estimated in three streams within the Toolik Inlet watershed. HOBO U20 data loggers were used for stage (water depth) data acquisition, and a rating curve relationship between stage and occasional dilution gauged discharge measurements was established to transform continuous stage measurements to continuous discharge measurements. The data included in this file is from I8 Outlet stream, 2010 season.
Michael Gooseff, 2013 Specific conductance and temperature data from Peat Inlet near Toolik Field Station, Alaska, summer 2011. 10.6073/pasta/cbe4b564a3fa2e6108a5f5b65c2f1950
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from Peat Inlet stream, 2011 season.
Michael Gooseff, 2013 daily average discharge data from Peat Inlet near Toolik Field Station, Alaska, summer 2011. 10.6073/pasta/4c1790b726df3953cd58f9f15c691ee3
As a part of the CSASN project, daily average discharge was estimated in three streams within the Toolik Inlet watershed from 2011 - 2012 summer/fall seasons. HOBO U20 data loggers were used for stage (water depth) data acquisition, and a rating curve relationship between stage and occasional dilution gauged discharge measurements was established to transform continuous stage measurements to continuous discharge measurements. The data included in this file is from Peat Inlet stream, 2011 season.
Michael Gooseff, 2013 Specific conductance and temperature data from I8 Outlet near Toolik Field Station, Alaska, summer 2010. 10.6073/pasta/7718058cc9f7419cc1b84a0a3d3b9421
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from I8 Outlet stream, 2010 season.
Michael Gooseff, 2013 daily average discharge data from I8 Outlet near Toolik Field Station, Alaska, summer 2011. 10.6073/pasta/1732d58558e43c1f6c11fe2469989988
As a part of the CSASN project, daily average discharge was estimated in three streams within the Toolik Inlet watershed from 2011 - 2012 summer/fall seasons. HOBO U20 data loggers were used for stage (water depth) data acquisition, and a rating curve relationship between stage and occasional dilution gauged discharge measurements was established to transform continuous stage measurements to continuous discharge measurements. The data included in this file is from I8 Outlet stream, 2011 season.
Michael Gooseff, 2013 I8 Inlet well #1 depth in summer 2011. 10.6073/pasta/3ea5e43f0da7adb5180d2db46128c3ff
Data on sensor depth gathered from I8In Well 1 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Specific conductance and temperature data from I8 Outlet near Toolik Field Station, Alaska, summer 2012. 10.6073/pasta/0d632902d48b411c7f9c92a5231b50fd
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from I8 Outlet stream, 2012 season.
Michael Gooseff, 2013 I8 Inlet well #4 depth in summer 2011. 10.6073/pasta/b141523b2c8c9fb3bcf70252a0b0dcf9
Data on sensor depth gathered from I8In Well 4 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Specific conductance and temperature data from Peat Inlet near Toolik Field Station, Alaska, summer 2010. 10.6073/pasta/2fa324c9b2656bae95f9a7aea25b8e25
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from Peat Inlet stream, 2010 season.
Michael Gooseff, 2013 I8 Inlet well #2 depth in summer 2011. 10.6073/pasta/265e39d591f41f6ec0abfcbf3404e64a
Data on sensor depth gathered from I8In Well 2 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Specific conductance and temperature data from I8 Inlet, near Toolik Field Station, Alaska, summer 2011. 10.6073/pasta/bcf66401d57ed736fd610682f49460fb
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from I8 Inlet stream, 2011 season.
Michael Gooseff, 2013 Discharge data from I8 Inlet, near Toolik Field Station, Alaska, summer 2010. 10.6073/pasta/6f297c25900b6b34cb80a11e1ce3b7de
As a part of the CSASN project, daily average discharge was estimated in three streams within the Toolik Inlet watershed. HOBO U20 data loggers were used for stage (water depth) data acquisition, and a rating curve relationship between stage and occasional dilution gauged discharge measurements was established to transform continuous stage measurements to continuous discharge measurements. The data included in this file is from I8 Inlet stream, 2010 season.
Michael Gooseff, 2013 Peat Inlet well #4 depth in summer 2011. 10.6073/pasta/eecce1502fa9210fe081d060b9b26775
Data on sensor depth gathered from PIn Well 4 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 I8 Inlet well #8 depth in summer 2011. 10.6073/pasta/bf9eb0959d56cc203c97ea52946aad7a
Data on sensor depth gathered from I8In Well 8 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 I8 Inlet well #6 depth in summer 2011. 10.6073/pasta/b21d76c698fb3143f9006863b1706c05
Data on sensor depth gathered from I8In Well 6 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Peat Inlet well #8 depth in summer 2011. 10.6073/pasta/4cee4ccf5d7edabd50a92fbe863536ca
Data on sensor depth gathered from PIn Well 8 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Peat Inlet well #7 depth in summer 2011. 10.6073/pasta/a6da9e77bd4944730f3b8fc38388bec9
Data on sensor depth gathered from Pin Well 7 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Peat Inlet well #6 depth in summer 2011. 10.6073/pasta/11fda032461f0f112b976e1d8830fc52
Data on sensor depth gathered from PIn Well 6 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 Daily average discharge data from I8 Inlet, near Toolik Field Station, Alaska, summer 2011. 10.6073/pasta/57e893a765dd6f809ab44f83f4ef9455
As a part of the CSASN project, daily average discharge was estimated in three streams within the Toolik Inlet watershed from 2011 - 2012 summer/fall seasons. HOBO U20 data loggers were used for stage (water depth) data acquisition, and a rating curve relationship between stage and occasional dilution gauged discharge measurements was established to transform continuous stage measurements to continuous discharge measurements. The data included in this file is from I8 Inlet stream, 2011 season.
Michael Gooseff, 2013 Specific conductance and temperature data from I8 Inlet, near Toolik Field Station, Alaska, summer 2012. 10.6073/pasta/60754311f473af4d3540a0fa3d70d724
As a part of the CSASN project, background (or ambient) specific conductance and stream water temperature was continuously monitored in three streams within the Toolik Inlet watershed from 2010 - 2012 summer/fall seasons. HOBO U24 data loggers were used for data acquisition. The data included in this file is from I8 Inlet stream, 2012 season.
Michael Gooseff, 2013 discharge data from Peat Inlet near Toolik Field Station, Alaska, summer 2010. 10.6073/pasta/063253c74d2d7e2f54a8981c9b2d68a8
As a part of the CSASN project, daily average discharge was estimated in three streams within the Toolik Inlet. HOBO U20 data loggers were used for stage (water depth) data acquisition, and a rating curve relationship between stage and occasional dilution gauged discharge measurements was established to transform continuous stage measurements to continuous discharge measurements. The data included in this file is from Peat Inlet stream, 2010 season.
Michael Gooseff, 2013 Peat Inlet well #3 depth in summer 2011. 10.6073/pasta/f0c513552d45b605b9049df9d0ce4dda
Data on sensor depth gathered from PIn Well 3 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
Michael Gooseff, 2013 I8 Inlet well #3 depth in summer 2011. 10.6073/pasta/51ab7dca36232d5f843393ebdcdd7c27
Data on sensor depth gathered from I8In Well 3 in 2011 from the CSASN-1 project. A HOBO U23 water level logger was used. This data is used to understand frost table changes throughout the season.
William "Breck" Bowden, 2013 Substrate and cover types on the stream bottom determined by point transects for streams near the Toolik Field Station, Alaska, for 2010.. 10.6073/pasta/a3de00f9b8f9d563e8bb2fd37e362bb0
The Changing Seasonality of Arctic Stream Systems (CSASN) was active from 2010 to 2012. The CSASN goal was to quantify the relative influences of through flow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and to determine how these influences might shift under seasonal conditions that are likely to be substantially different in the future. Point transects were done throughout the sampling season to determine different substrate and cover types on the stream bottom.
William "Breck" Bowden, 2013 CSASN TASCC Nutrient additions to streams near Toolik Field Sation, Alaska 2010 to 2012. 10.6073/pasta/a4716dc93844548b60384a899a23e794
The Changing Seasonality of Artic Stream Systems (CSASN) was active from 2010 to 2012. The CSASN goal was to quantify the relative influences of throughflow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and to determine how these influences might shift under seasonal conditions that are likely to be substantially different in the future. There were a number of TASCC and Plateau nutrient additions at each sampling location.
William "Breck" Bowden, 2013 CSASN Benthic Nutrients from 2010 to 2012 at I8 Inlet, I8 Outlet, Peat Inlet and Kuparuk Rivers. 10.6073/pasta/6c0c54d26b2b4e18fc3f1fb6af6b196d
The Changing Seasonality of Arctic Stream Systems (CSASN) did extensive arctic stream research from 2010 to 2012. Specifically, the CSASN goal was to quantify the relative influences of through flow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and determine how these influences will shift under seasonal conditions that are likely to be substantially different in the future. Throughout the project, samples were collected from Benthic Rock Scrubs and Fine Benthic Organic Matter (FBOM).
William "Breck" Bowden, 2013 CSASN Well and Mini-piezomenter Samples. 10.6073/pasta/3597abe9989139bccab4d0d0b51367f0
The Changing Seasonality of Arctic Stream Systems (CSASN) was active from 2010 to 2012. The CSASN goal was to quantify the relative influences of through flow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and to determine how these influences might shift under seasonal conditions that are likely to be substantially different in the future. During the project, well and mini-piezometer samples were collected from various depths near stream channels and analyzed for a variety of nutrients.
William "Breck" Bowden, 2013 CSASN Channel Nutrients from 2010 to 2012 in I8 Inlet, I8 Outlet, Peat Inlet and Kuparuk Rivers. 10.6073/pasta/d19adb5a8fe01f67806e5afccf283b52
The Changing Seasonality of Arctic Stream Systems (CSASN) was active from 2010 to 2012. The CSASN goal was to quantify the relative influences of through flow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and to determine how these influences might shift under seasonal conditions that are likely to be substantially different in the future. During the project, background samples were collected from four stream channels and analyzed for a variety of nutrients.
William "Breck" Bowden, 2013 CSASN Nutients: Tracer addition for spiraling curve characterization from 2010 to 2012. 10.6073/pasta/1a99d8b18f6311f5047665cd7c756512
The Changing Seasonality of Arctic Stream Systems (CSASN) was active from 2010 to 2012. The CSASN goal was to quantify the relative influences of through flow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and to determine how these influences might shift under seasonal conditions that are likely to be substantially different in the future. There were a number of TASCC and Plateau nutrient additions at each sampling location.
William "Breck" Bowden, 2013 Whole stream metabolism (I8 Inlet, I8 Outlet; Peat Inlet; Kuparuk): Changing seasonality of Arctic stream systems project. 10.6073/pasta/b2f42a2744d8526d06c522f74c273824
The Changing Seasonality of Arctic Stream Systems (CSASN) was active from 2010 to 2012. The CSASN goal was to quantify the relative influences of through flow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and to determine how these influences might shift under seasonal conditions that are likely to be substantially different in the future. Whole Stream Metabolism was calculated using dissolved oxygen, discharge, stage, and temperature measured by sounds deployed in the field.
William "Breck" Bowden, 2013 Nutrient and tracer amounts for Tracer Additions for Spiraling Curve Characterization studies on arctic streams near Toolik Field Station, Alaska 2010 -2012.. 10.6073/pasta/6b0e4feffc9bf3cc093dd668496d5d1b
The Changing Seasonality of Arctic Stream Systems (CSASN) was active from 2010 to 2012. The CSASN goal was to quantify the relative influences of through flow, lateral inputs, and hyporheic regeneration on the seasonal fluxes C, N, and P in an arctic river network, and to determine how these influences might shift under seasonal conditions that are likely to be substantially different in the future. There were a number of tracer addition for spiraling curve characterization (TASCC) and Plateau nutrient additions at each sampling location.
Ecotypes Transplant Garden
Abstract
Ned Fetcher, James McGraw, Marjan van de Weg, 2014 Temperature response of dark respiration from the 1980-82 Eriophorum vaginatum reciprocal transplant experiment along Dalton Highway, Alaska.. 10.6073/pasta/90263d4b31bc565b3bab55fa012151dc
These data were collected in July 2011 for tussocks transplanted in 1980-82 in a reciprocal transplant experiment and harvested in 2011. Important variables are garden name, source population, and dark respiration.
Ned Fetcher, James McGraw, Sara Souther, 2013 Light-saturated photosynthetic rate, dark respiration, stomatal conductance and ratio of internal to external carbon dioxide concentration from the 1980-82 Eriophorum vaginatum reciprocal transplant plots from Eagle Creek to Prudhoe Bay, Alaska, 2010. 10.6073/pasta/ba7785eaad218efbe9c84b63805e2952
In 1980-1982, six transplant gardens were established along a latitudinal gradient in interior Alaska from Eagle Creek, AK, in the south to Prudhoe Bay, AK, in the north (Shaver et al. 1986) .Three sites, Toolik Lake (TL), Sagwon (SAG), and Prudhoe Bay (PB) are north of the continental divide and the remaining three, Eagle Creek (EC), No Name Creek (NN), and Coldfoot (CF), are south of the continental divide. Each garden consisted of 10 individual tussocks transplanted back to their home-site, as well as 10 individuals from each of the other transplant sites.
Jessica Schedlbauer, Ned Fetcher, Katherine Hood, Michael L Moody, Jianwu Tang, 2018 Carbon dioxide response curve, dark respiration, specific leaf area, and leaf nitrogen data for the 2014 Eriophorum vaginatum reciprocal transplant gardens at Toolik Lake and Sagwon, AK, collected in 2016.. 10.6073/pasta/077c0caaa9ce4693b4d3249a311fc0ab
Transplant gardens at Toolik Lake and Sagwon were established in 2014.  At each location, 60 tussocks each from ecotypes of Eriophorum vaginatum from Coldfoot (CF, 67°15′32″N, 150°10′12″W), Toolik Lake (TL, 68°37′44″N, 149°35′0″W), and Sagwon (SAG, 69°25′26″N, 148°42′49″W) were transplanted.  Half the transplanted tussocks were grown under ambient conditions, while the other half were exposed to passive warming supplied by open-top chambers (OTC).
Jianwu Tang, Ned Fetcher, Michael L Moody, 2019 Litter decomposition from 2014 reciprocal transplant garden Toolik Lake, Coldfoot, and Sagwon, Alaska 2016. 10.6073/pasta/12e95d63a6c0be0124c69487182b1750
Data on litter decomposition of Eriophorum vaginatum leaves collected at Toolik Lake, Coldfoot, and Sagwon and distributed to all three sites. Litter bags from the three populations were deployed at CF (8/26/15), TL (8/24/16) and SG (8/25/16) sites approximately 40 meter away from the main transplant gardens (east of CF, east of TL and west of SG) into 5 blocks with 4 intended harvests at each plots.
Jianwu Tang, Ned Fetcher, Michael L Moody, 2019 Absorbed soil nutrients on ion exchange membranes in the reciprocal transplant gardens at Toolik Lake, Coldfoot, and Sagwon in 2016. 10.6073/pasta/86225c3c1a98be0780d092f8b8bf9943
Transplant gardens at Toolik Lake and Sagwon were established in 2014.  At each location, 60 tussocks each from ecotypes of Eriophorum vaginatum from Coldfoot (CF, 67°15′32″N, 150°10′12″W), Toolik Lake (TL, 68°37′44″N, 149°35′0″W), and Sagwon (SG, 69°25′26″N, 148°42′49″W) were transplanted. At the reciprocal transplant gardens, ion exchange membranes were used to measure nutrient availability over two time periods: Early season (June) and mid season (July). Membranes were deployed in the field for either 20 or 21 days, depending on travel constraints.
Jianwu Tang, Ned Fetcher, Michael L Moody, 2019 Air and soil temperature in warmed and control plots of 2014 reciprocal transplant gardens Toolik Lake, Coldfoot, and Sagwon, Alaska 2015 and 2016. 10.6073/pasta/1ff781d88be7161218e0d2419648ca52
Air and soil temperatures from iButtons located at reciprocal transplant gardens at Toolik Lake, Coldfoot, and Sagwon in 2015 and 2016. The reciprocal transplant gardens at Coldfoot (CF), Toolik Lake (TL), Sagwon (SG) Each plot contains three tussocks, 30-50 centimeters apart
Ned Fetcher, Jianwu Tang, Michael L Moody, 2019 White spruce trees tagged measured for total height and girth at 10 centimeter height, and leader length, Coldfoot, Alaska 2015, 2016. 10.6073/pasta/88e3e3717e6ced7f4c14aa89518f4613
White spruce seedlings have colonized the site of the Coldfoot transplant garden (CF, 67°15′32″N, 150°10′12″W) since the original garden was established in 1982.  Some trees are 2-3 meter tall. All seedlings and trees within the current (2014) garden were tagged, located with a Global Positioning System (GPS) receiver, and measured in 2015 and 2016 for total height and girth at 10 centimeter height and leader length.
FishScape Tag Data
Abstract
Linda Deegan, 2019 Fish tag data remotely detected using whole stream antennas or hand held tag readers in the Kuparuk, Itkilik, and Sagavanirktok drainages near Toolik Field Station, Alaska, from 2010 to 2017. 10.6073/pasta/38dfd48fc143a4f5abea8aa6d664c919
From 2009 to 2017, the FISHSCAPE Project (grant numbers 1719267, 1417754, and 0902153), based at Toolik Field Station, has monitored physical, chemical, and biological parameters within three watersheds: The Kuparuk (including Toolik Lake and Toolik outlet stream); The Sagavanirktok (primarily Oksrukuyik Creek, but also including sections of the Ailish and Atigun Rivers and the Galbraith Lakes); and The Itkillik (primarily the I-Minus outlet stream, a tributary that that feeds into the Itkilik River).
Linda Deegan, 2019 Fish tagging data (length, weight, tag number) from the Kuparuk, the Sagavanirktok (primarily Oksrukuyik Creek) and the Itkillik (primarily the I-Minus outlet stream) watersheds, 2009 - 2017. 10.6073/pasta/febee98e62aaa9001e5747432ded64bd
Since 2009, the FISHSCAPE  Project (grant number  1719267, 1417754, and 0902153), based at Toolik Field Station, has monitored physical, chemical, and biolog
Landscape Interactions Bacteria Production
Abstract
George Kling, 2013 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2011, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/e173d6777edde2174fe5a065508ac0fa
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2006 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2005, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/1245c6b213b06c35210c8692719f9210
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2001 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2000, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/ff448d5b1922f22150e1ded117bc9941
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2003 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2002, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/5c7b614fd296fbcd68678acae7e279fe
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 1998 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 1996, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/357b671bc1016aea9b9a27a4665608a2
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2010 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2008, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/9b801826740815835c2c2b5710d62bd6
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 1999 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 1997, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/cffc5ad655e5212ac7801e9963006054
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2005 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2004, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/833939f6768034ec503199de84435cf7
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2011 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2010, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/c8e7c6ae3c0b6de34079060ce31b9c81
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2002 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2001, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/966889bb1bc0abaaaeda89453061f04d
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2000 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 1999, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/069c8e8b460cdaaa9f90634d36b5ea72
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2004 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2003, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/e3e51d7a3d60aab985d4807228d65430
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2007 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2006, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/2f469f317dbc26259b2be3c487d4bcaf
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2009 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2007, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/d7e8ccc75c4dc3b3c48af8ba2cb8bd8a
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2010 Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2009, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/fb00a0962d4b67633d64787b0859e238
Yearly file containing information on bacterial productivity. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time and depth.
George Kling, 2022 Bacterial Production Data for lake and stream samples collected in summer 2012 through 2021, Arctic LTER, Toolik Lake Field Station, Alaska. 10.6073/pasta/ebdab14a08a07434cfc42495bcaf186a
File containing data on bacterial productivity in lakes and streams.  Samples were collected at various sites near Toolik Lake Field Station (68 38'N, 149 36'W).  Sample site descriptors include an assigned number (sortchem), site, date, time and depth, and bacterial production.   
Model data
Abstract
Edward Rastetter, 2020 Model output, drivers and parameters for Ecosystem Recovery from Disturbance is Constrained by N Cycle Openness, Vegetation-Soil N Distribution, Form of N Losses, and the Balance Between Vegetation and Soil-Microbial Processes . 10.6073/pasta/24624a295f418f36ae90c99ab49bca07
Files used to generate the data for figures in:
Rastetter, EB, Kling, GW, Shaver, GR, Crump, BC, Gough, L. Ecosystem Recovery from Disturbance Is Constrained by N Cycle Openness, Vegetation-Soil N Distribution, Form of N Losses, and the Balance between Vegetation and Soil-Microbial Processes. Ecosystems (2020). https://doi.org/10.1007/s10021-020-00542-3.
Edward Rastetter, Bonnie Kwiatkowski, 2020 Model executable, output, drivers and parameters for modeling organism acclimation to changing availability of and requirements for substitutable and interdependent resources. 10.6073/pasta/314852535992295685284214cc0ae78b
Files used to generate the data for figures in: Rastetter, EB, Kwiatkowski, BL. An approach to modeling resource optimization for substitutable and interdependent resources. Ecological Modelling (2020). https://doi.org/10.1016/j.ecolmodel.2020.109033. This paper presents a hierarchical approach to modeling organism acclimation to changing availability of and requirements for substitutable and interdependent resources. Substitutable resources are resources that fill the same metabolic or stoichiometric need of the organism.
Edward Rastetter, Kevin Griffin, Bonnie Kwiatkowski, George Kling, 2022 Model Simulations of The Effects of Shifts in High-frequency Weather Variability (With a Long-term Trend) on Carbon Loss from Land to the Atmosphere, Toolik Lake, Alaska, 2022-2122. 10.6073/pasta/83775003d8ef8978bf43d5c801f2a9a9
Climate change is increasing extreme weather events, but effects on high-frequency weather variability and the resultant impacts on ecosystem function are poorly understood. We assessed ecosystem responses of arctic tundra to changes in day-to-day weather variability using a biogeochemical model and stochastic simulations of daily temperature, precipitation, and light. Changes in weather variability altered ecosystem carbon, nitrogen, and phosphorus stocks and cycling rates.
Photochemistry Bacteria
Abstract
George Kling, Rose Cory, 2014 Bacterial production and respiration data set for NSF Arctic Photochemistry project on the North Slope of Alaska.. 10.6073/pasta/21080bc91c6192a04aeeaacaad7d444d
Data file describing the bacterial production and bacterial respiration of water samples collected at various sites near Toolik Lake on the North Slope of Alaska. Sample site descriptors include site, date, time, depth, and category representing severity of thermokarst disturbance. A synthesis of the data presented here is published in Cory et al. 2013, PNAS 110:3429-3434, and in Cory et al. 2014, Science 345:925-928.
root_dynamics data
Abstract
Loretta Johnson, Knute Nadelhoffer, George Kling, 2003 Microbial Respirations from experiemental plots near Toolik Lake, AK for 2001. 10.6073/pasta/4ef85017f9da938e69f8c7150156e66a
Microbial respiration of carbon dioxide, and methane in waters from wet sedge plots near Toolik Lake, AK during the summer of 2001.
Streams Insects
Abstract
Ann Hershey, 2004 Total numbers and species of insects taken from rock scrubbings during the summer of 1984-1988, 1993-1994, 1996-1998, in the Kuparuk River experimental reach near Toolik Field Station, North Slope Alaska... 10.6073/pasta/8d387215e6c252119e628ac4e5acdbed
A rock-scrubbing technique was used to collect bottom samples at several different stations with three replicates at each station in the Kuparuk River. The stations are measured relative to the 1984 phosphorus dripper. Only July sampling dates are included in this file (ACG). The samples were preserved in ethanol then picked, sorted, counted, and measured in Duluth using a NIKON MICRO-PLAN II digitizing pad.
Alex Huryn, 2004 Total numbers per square meter and taxa of insects taken from the Kuparuk River during the summer of 2001, Arctic LTER 2001.. 10.6073/pasta/98b14e18d529573f7bca9e05dc0ad76a
A Surber sampler (25 X 25 cm frame fitted with a 243 um mesh net) was used to sample invertebrates at several different stations. Two replicates were taken from each station. The same sampling procedure was used for all dates. The stations were measured relative to the site of the dripper ("-" = upstream of the dripper). Samples were preserved in 4% formaldehyde and transported to Orono, Maine, where invertebrates were removed by hand under 15X magnification and then identified and counted. All values are converted to individuals per square meter.
Alex Huryn, 2004 Total numbers per square meter and taxa of insects taken during a survey of headwater streams in the Toolik Lake region during the summer of 2001, Arctic LTER 2001.. 10.6073/pasta/7a6829a22653bc7f164576721272cb35
A Surber sampler (25 X 25 cm frame fitted with a 243 um mesh net) was used to sample invertebrates on a single date at each site. Five replicates were taken from at least two riffles at each site. Samples were preserved in 4% formaldehyde and transported to Orono, Maine, where invertebrates were removed by hand under 15X magnification and then identified and counted. All values are the mean of five replicates and have been converted to individuals per square meter.
Alex Huryn, 2022 Invertebrate Community Asemblage from the Arctic LTER Upper Kuparuk River Reference (2001-2012) and Fertilized Reach (2002-2016), Toolik Field Station, Alaska. 10.6073/pasta/7f281726bfa59df3928b774c5baa6cb3
Surber sampler (25 X 25 cm frame fitted with a 243 um mesh net) was used to sample invertebrates at on the Kuparuk River in Reference (2001-2012) and Fertilized Reach (2002-2016) reach.
Terrestrial Biomass
Abstract
Mathew Williams, Edward Rastetter, 1999 Measurements of Leaf area, foliar C and N for 14 sites along a transect down the Kuparuk River basin, summer 1997, North Slope, Alaska.. 10.6073/pasta/a5a4d4154e0a8181a5523b4d9c49ed99
1997 measurements of Leaf area, foliar C and N for 14 sites along a transect down the Kuparuk River basin, North Slope, Alaska.
Laura Gough, 2009 Above ground plant and below ground stem biomass in the Arctic LTER moist acidic tussock tundra experimental plots, 2006, Toolik Lake, Alaska. 10.6073/pasta/5587a6f1bfc4f359c011139b2977d842
Above ground plant and below ground stem biomass, percent nitrogen, and percent carbon were measured in the Arctic LTER moist acidic tundra experimental plots. Treatments included control, and nitrogen and phosphorus amended plots for 10 years, and exclosure plots with and without added nitrogen and phosphorus.
Laura Gough, 2009 Above ground plant and below ground stem biomass in the Arctic LTER dry heath tundra experimental plots, 2006, Toolik Lake, Alaska. 10.6073/pasta/447aec542efb8fd505b85f90c35ea47e
Above ground plant and below ground stem biomass, percent nitrogen, and percent carbon were measured in the Arctic LTER dry heath tundra experimental plots. Treatments included control, and nitrogen and phosphorus amended plots for 10 years, and exclosure plots with and without added nitrogen and phosphorus.
Sarah Hobbie, 2001 Foliar nutrients (N, P, K, Ca, Mg, Al) for dominant species on moist acidic and non-acidic tundra, Arctic LTER, Toolik Field Station , Alaska, 1999.. 10.6073/pasta/09cc986609a5494d901942b69cea037d
Foliar nutrients (N, P, K, Ca, Mg, Al) for dominant species on moist acidic and non-acidic tundra, Arctic LTER, Toolik Field Station , Alaska, 1999.
Mark Harmon, 2002 Long-term Carbon and Nitrogen, and Phosphorus Dynamics of Leaf and Fine Root Litter project (LIDET-Long-term Intersite Decomposition Experiment Team) data for the ARC, Arctic LTER. 1990 to 2000.. 10.6073/pasta/96ee7de35954a3763ab4c244bad0c6f0
This file is from the Long-term Carbon and Nitrogen, and Phosphorus Dynamics of Leaf and Fine Root Litter project (LIDET-Long-term Intersite Decomposition Experiment Team). This file contains only the Arctic LTER data. In particular the mass looses over the ten year study. Three types of fine roots (graminoid, hardwood, and conifer), six types of leaf litter (which ranged in lignin/nitrogen ratio from 5 to 75), and wooden dowels were used for litter incubations over a ten year period.
Sarah Hobbie, 2002 Foliar and litter nutrients and retranslocation efficiencies (N, P, K, Ca, Mg, Al) for dominant species on moist acidic and non-acidic tundra, Arctic LTER, Toolik Field Station , Alaska, 1999.. 10.6073/pasta/7904f91d28f2782b9ae473b0a6f7203c
Foliar and litter nutrients and retranslocation efficiencies (N, P, K, Ca, Mg) for dominant species on moist acidic and non-acidic tundra, Arctic LTER, Toolik Field Station , Alaska, 1999.
Laura Gough, Sarah Hobbie, 2004 Above ground plant and belowground stem biomass in moist acidic and non-acidic tussock tundra experimental sites, 2001, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/4195a17564c031686d5b95b551119fd5
Above ground plant and belowground stem biomass was measured in moist acidic and non-acidic tussock tundra experimental sites. Treatments sampled were control plots and plots amended with nitrogen and phosphorus.
Laura Gough, Sarah Hobbie, 2004 Percent carbon, percent nitrogen, del13C and del15N of above ground plant and belowground stem biomass samples from experimental plots in moist acidic and moist non-acidic tundra, 2000, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/bdb3eeabb3b26075f0841440e8f92d3a
Percent carbon, percent nitrogen, del13C and del15N were measured from above ground plant and belowground stem biomass samples from experimental plots in moist acidic and moist non-acidic tundra. Biomass data are in 2000lgshttbm.dat.
Gaius Shaver, 2000 Ecosystem-level Carbon dioxide fluxes in two long-term experimental wet sedge tundra sites near Toolik Lake, AK, ARC LTER 1994.. 10.6073/pasta/e1601a77bb1471e895e47d5eef298d2c
Ecosystem-level Carbon dioxide fluxes were measured in two long-term experimental wet sedge tundra sites near Toolik Lake, AK. Experimental treatments at each site included factorial NxP, greenhouse and shade house and were begun in 1985 (Sag site) or in 1988 (Toolik sites). Fluxes were measured on quadrats that were later sampled for biomass and leaf area.
Gaius Shaver, 1996 June and August plant biomass in mesic acidic tussock tundra, 1992, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/e4c9bbe7ff8627cf706780e48aa3462a
Quadrats (20cm x 20cm squares) along a line (block) were collected for plant biomass in mesic tussock tundra. In the lab each quadrat was separated into individual species, new and old aboveground and belowground biomass. Two harvests were completed, June and a late July. These are control plots from an experiment setup for a 15N experiment.
Gaius Shaver, 2000 Plant biomass in mesic acidic tussock tundra, 1998 15N controls, Toolik, Alaska.. 10.6073/pasta/e56de6e13a790a5bc90e63e2903dfc6d
Five or six quadrats (20cm x 20cm squares) along a line (block) were collected for plant biomass in mesic tussock tundra. In the lab each quadrat was separated into individual species, new and old aboveground and belowground biomass.
Gaius Shaver, Terry Chapin, 1991 Biomass in wet sedge tundra near the Atigun River crossing of the Dalton Highway, North Slope AK, 1982.. 10.6073/pasta/77ca341a7c1f12d8303a99fc8563182f
Biomass in wet sedge tundra near the Atigun River crossing of the Dalton Highway, North Slope AK. .There were three harvests; Late May-early June; Late July-early August; Late August-early September. See Shaver and Chapin (Ecological Monographs, 61, 1991 pp.1-31.
Gaius Shaver, 2004 Biomass, nitrogen and carbon of plants in the Arctic LTER experimental wet sedge tundra experimental sites, 2001, Toolik Lake, Alaska.. 10.6073/pasta/b3407bae411c523f4857753b09f620a0
Biomass, nitrogen and carbon of plants in the Arctic LTER experimental wet sedge tundra experimental sites, 2001, Toolik Lake, Alaska.. Treatments at each site included factorial NxP, greenhouse and shade house and were begun in 1985 (Sag site) or in 1988 (Toolik sites).
Gaius Shaver, 1990 Arctic LTER 1982: Biomass in tussock tundra near Toolik Lake North Slope AK (68 degrees 38N, 149derees 34W).. 10.6073/pasta/c0d17c3371e88847208dbc0b35f2f8f5
Biomass in tussock tundra near Toolik Lake North Slope AK (68 degrees 38N, 149derees 34W). There were three harvests;Late May-early June; Late July-early August; Late August-early September. See Shaver and Chapin (Ecological Monographs, 61(1), 1991 pp.1-31.
Gaius Shaver, 1990 Biomass from six vegetation types along a toposequence on a floodplain terrace of the Sagavanirktok River, Alaswka,1988, Arctic LTER.. 10.6073/pasta/b436a45e56aca0656484a308e4e6f12c
Biomass was harvested from six vegetation types along a toposequence on a floodplain terrace of the Sagavanirktok River in the northern foothills of the Brooks Range , Alaska (68degrees 46' N, 148 degrees 51' W 50m). The vegetation sites are; upland tussock tundra, "hilltop heath", a "hillslope shrub-lupine", a "footslope Equisetum", a wet sedge tundra, and a "riverside willow".
Gaius Shaver, 1995 Early July plant biomass in mesic acidic tussock tundra, 1993, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/d72ed65f521fac34139850ef30bef72a
Quadrats (20cm x 20cm squares) along a line (block) were collected for plant biomass in mesic acidic tussock tundra. Each quadrat was separated into individual species, new and old aboveground and belowground biomass. The harvest occurred in early July to coincide with a 15N plant and soil harvest.
Gaius Shaver, Laura Gough, 1999 Quadrats were harvested for aboveground biomass from eight plots within a tussock, watertrack, and snowbed community at 3 sites - acidic tundra and nonacidic tundra near Arctic LTER Toolik Plots and acidic tundra near Sagwon,Arctic LTER 1997.. 10.6073/pasta/cf45e059c576273ec58ce24769793f28
Quadrats were harvested for aboveground biomass from eight plots within a tussock, watertrack, and snowbed community at 3 sites - acidic tundra near Toolik (site of acidic LTER plots), nonacidic tundra near Toolik Lake(site of non-acidic LTER plots), and acidic tundra near Sagwon. All vascular species were sorted, divided into new and old growth, dried, and weighed. Lichens were separated by genus in all quadrats. In half of the quadrats (n=4), mosses were separated by species. Moss and lichen data are presented by species elsewhere (see 97lgmosslichen.txt).
Gaius Shaver, 2002 Leaf area for select species was measured in arctic tundra experimental sites from late June into early August,Toolik Field Sattion, Alaska, Arctic LTER 2000.. 10.6073/pasta/13915ef410067ef23bad0faff678319c
Leaf area for select species was measured in arctic tundra experimental sites from late June into early August. Measurements were made in acidic and non acidic tussock tundra and in shrub tundra in control and fertilized plots.
Gaius Shaver, 1989 Biomass in shrub tundra near Toolik Lake North Slope AK (68 degrees 38N, 149derees 34W),1982.. 10.6073/pasta/06fd5df56a2d83c09df1d155479092d5
Biomass in shrub tundra near Toolik Lake North Slope AK (68 degrees 38N, 149derees 34W). There were three harvests; Late May-early June; Late July-early August; Late August-early September. See Shaver and Chapin (Ecological Monographs, 61(1), 1991 pp.1-31.
Gaius Shaver, 1990 Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska.. 10.6073/pasta/668dc98c3dbd83a308f0f38fb833f23e
Above ground plant biomass was measured in a tussock tundra experimental site. The plots were set up in 1981 and have been harvested in previous years (See Shaver and Chapin Ecological Monographs, 61(1), 1991 pp.1-31.) This file contains the biomass numbers for each harvested quadrat.
Gaius Shaver, 1998 Plant biomass in heath tundra experimental plots, 1996, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/4dcc09fd3ea2d757794d13c4727542aa
Plant biomass in arctic heath experimental plots. Plots set up in 1989 with nitrogen, phosphorus, nitrogen plus phosphorus and a shade treatment were harvested for above ground biomass. Root mass was also measured on a smaller subsample.
Gaius Shaver, 2001 Plant biomass in moist acidic tussock tundra experimental small mammal exclosures, 1999 Arctic LTER Toolik, Alaska.. 10.6073/pasta/3180bd090124c3a0d7a498e95685dfac
Above ground plant and below ground stem biomass was measured in Arctic LTER tussock tundra experimental small mammal exclosures. Treatments included Control, Nitrogen plus Phosphorus with both fenced and unfenced plots. In addition a moist non-acidic tussock tundra site was harvested. Leaf areas were also measured for each quadrat but are in a separate file.
Gaius Shaver, Laura Gough, 1999 A harvest was conducted to determine productivity of rare species not found in at least 4 quadrats per site in a separate small quadrat aboveground biomass harvest, Arctic LTER 1997.. 10.6073/pasta/c9d934f0c88b3f4545f997fe6dfd1a2e
A harvest was conducted to determine productivity of rare species not found in at least 4 quadrats per site in a separate small quadrat aboveground biomass harvest (see 97lg3sbm.txt). Harvests occurred in a tussock, watertrack, and snowbed community at 3 sites - acidic tundra near Toolik (site of acidic LTER plots), nonacidic tundra near Toolik Lake(site of non-acidic LTER plots), and acidic tundra near Sagwon. Moss and lichen data are presented by species elsewhere (see 97lgmosslichen).
Gaius Shaver, 1990 Seasonal plant biomass moist acidic tussock tundra, 1983, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/f15ef49234144987471d7a10d86d8bc3
Biomass in tussock tundra experimental plots near Toolik Lake, North Slope, AK (68 degrees 38N, 149derees 34W). There were five harvests in 1983. This file is the May 21-22, 1983 harvest.
Gaius Shaver, 1991 Biomass in heath tundra near Toolik Lake North Slope AK (68 degrees 38N, 149derees 34W), 1982.. 10.6073/pasta/5822d635c5094a1aa9aba29f0692ea49
Biomass in heath tundra near Toolik Lake North Slope AK (68 degrees 38N, 149derees 34W). .There were three harvests;Late May-early June; Late July-early August; Late August-early September. See Shaver and Chapin (Ecological Monographs, 61(1), 1991 pp.1-31.
Gaius Shaver, 1996 Plant biomass, leaf area, carbon, nitrogen, and phosphorus in wet sedge tundra, 1994, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/b68ff3f714e72e0528a2d72b2c04aafc
Plant biomass, leaf area, carbon, nitrogen, and phosphorus were measured in three wet sedge tundra experimental sites. Treatments at each site included factorial NxP and at the Toolik sites greenhouse and shade house. Treatments started in 1985 (Sag site) and in 1988 (Toolik sites).
Gaius Shaver, M. Syndonia Bret-Harte, 1998 Weights and lengths from retrospective growth analysis of different stem age classes of Betula nana, 1995, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/25e6539b3b55340d318a1a6befb82764
This data file contains the data on weights and lengths from retrospective growth analysis of different stem age classes of Betula nana ramets from the LTER Nutrient and Warming manipulations in tussock tundra at Toolik Lake.
Gaius Shaver, 2002 Above ground plant biomass in a mesic acidic tussock tundra experimental site 2000, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/24261b22fbd2ebb6bd203ceece4b8859
Above ground plant biomass and leaf area were measured in a tussock tundra experimental site. The plots were set up in 1981 and have been harvested in previous years (See Shaver and Chapin Ecological Monographs, 61(1), 1991 pp.1-31.) This file contains the biomass numbers for each harvested quadrat and per cent carbon and nitrogen summaries for control and fertilized plots. Leaf area data is in 2000gsttLA
Gaius Shaver, 2006 Above ground plant biomass in a mesic acidic tussock tundra experimental site from 1982 to 2000 Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/c3ef07e6ed81c1fc33e9bc20aff07093
Above ground plant biomass and leaf area were measured in a moist acidic tussock tundra experimental site. The plots were set up in 1981 and have been harvested in periodical (See Shaver and Chapin Ecological Monographs, 61(1), 1991 pp.1-31. Mack, et al, Nature 2004 431:440-443) This file contains the biomass numbers for each harvested quadrat and per cent carbon and nitrogen summaries for harvests through 2000. Leaf area data is presented in other data files (see http://ecosystems.mbl.edu/arc).
Gaius Shaver, Yuriko Yano, 2009 Bulk concentration and isotopic information of plant C and N in green leaves and tissues collected from Imnavait watershed during 2003-2005. 10.6073/pasta/329191b51f7c934d72974eaf0f9bcff9
Changes in total C and N, d13C and d15N, C:N ratio in green leaves and parts of mosses (for sphagnum, both red and green tips were included) over time since 15NH4 addition in Imnavait watershed.
Gaius Shaver, 2005 Above ground plant and below ground stem biomass in the Arctic LTER acidic tussock tundra experimental plots, 2002, Toolik Lake, Alaska.. 10.6073/pasta/b227fa1d98ed466ea5fc3816ef5c8ba2
Above ground plant and below ground stem biomass was measured in the Arctic LTER acidic tussock tundra experimental plots. Treatments included control, nitrogen plus phosphorus amended plots for either 6 or 13 years and vole exclosure plots with or without amends of nitrogen and phosphorus.
Gaius Shaver, 1998 Above ground plant biomass and leaf area of moist acidic tussock tundra 1981 experimental site, Arctic LTER, Toolik Lake, Alaska.1995.. 10.6073/pasta/c8cc8ae964a9f9c68ffbf96cbb61e4e9
Above ground plant biomass and leaf area were measured in a tussock tundra experimental site. The plots were set up in 1981 and have been harvested in previous years (See Shaver and Chapin Ecological Monographs, 61, 1991 pp.1-31).
Gaius Shaver, 2002 Plant leaf area in Arctic LTER tussock tundra experimental small mammal exclosures.. 10.6073/pasta/ad59eb7b05e4a22138a4d4c27b56f03b
Leaf areas were measured on quadrats harvested in Arctic LTER tussock tundra experimental small mammal exclosures. Treatments included Control, Nitrogen plus Phosphorus with both fenced and unfenced plots. In addition a moist non-acidic tussock tundra site was harvested. Biomass was also measured for each quadrat but is in a separate file.
Gaius Shaver, 1990 Above ground plant biomass a moist acidic tussock tundra experimental site, 1984, Acric LTER, Toolik Lake, Alaska.. 10.6073/pasta/08a91cb2697f7cdc82d654e82b53c5c5
Above ground plant biomass was measured in a tussock tundra experimental site. The plots were set up in 1981 and have been harvested in previous years (See Shaver and Chapin Ecological Monographs, 61(1), 1991 pp.1-31.) This file is the July 26-27, 1984 harvest of the controls and nitrogen + phosphorus treatments.
Laura Gough, Sarah Hobbie, 2004 Aboveground plant and belowground stem biomass were measured in moist acidic and moist non-acidic tussock tundra experimental plots, Toolik Field Station, Alaska, Arctic LTER 2000.. 10.6073/pasta/6e0b4ea291f4b5940b2b8b80af917bd5
Aboveground plant and belowground stem biomass were measured in moist acidic and moist non-acidic tussock tundra experimental plots. Treatments at the acidic site include control and nitrogen (N) plus phosphorus (P) amendments; treatments at the non-acidic site include N, P, N+P, greenhouse warming, and greenhouse+N+P.
Note:  Version 8 corrected an error where Carex vaginata was listed twice under treatment of "Nitrogen Phosphorus".  The tissues with 8 quadrats were "Greenhouse"  treatment.
Kevin Griffin, Natalie Boelman, 2020 Carbon dioxide flux measurements from Arctic LTER Heath Tundra herbivore exclosures, Toolik Field Station, Alaska 2013 . 10.6073/pasta/3319313d52f5da852316567b2a5c0cad
Ecosystem carbon dioxide (CO2) flux light response curves were measured from Arctic LTER heath tundra herbivore exclosures. This file contains the CO2 and normalized difference vegetation index (NDVI) data for each plot
Thermokarst Lakes
Abstract
George Kling, 2012 Temperature and discharge data for lake NE 14 Outlet near Toolik Lake, Alaska, during the 2011 summer field season.. 10.6073/pasta/b1091311ddcde6ba500512051b1d7b35
File contains temperature and discharge data for Lake NE 14 Outlet during the 2011 summer field season.
George Kling, 2012 Temperature and discharge data for lake NE 14 Outlet near Toolik Lake, Alaska, during the 2010 summer field season.. 10.6073/pasta/8cd114d3afe037345690471ab0020e88
File contains temperature and discharge data for Lake NE 14 Outlet during the 2010 summer field season.
George Kling, 2012 Temperature and discharge data for lake NE 14 Outlet near Toolik Lake, Alaska, during the 2009 summer field season.. 10.6073/pasta/4ed358e2371d8e30de4c65139c58fb61
File contains temperature and discharge data for lake NE 14 Outlet during the 2009 summer field season.
Toolik Lake Inlet Discharge
Abstract
George Kling, 2010 Toolik Inlet Discharge Data collected in summer 2008, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/48e780b581b1071f19c7e5f4b165035d
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2008 study season.
George Kling, 2010 Toolik Inlet Discharge Data collected in summer 2007, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/3af4cbab73c38f76b2829c3abff8f703
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2007 study season.
George Kling, 2006 Toolik Inlet Discharge Data collected in summer 2005, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/9dde811179666deedd0ecf911be39f65
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2005 study season. Water level was recorded with a Stevens PGIII Pulse Generator and water temperature and conductivity with a Campbell Scientific Model 247 Conductivity (EC) and Temperature probe. A Campbell Scientific CR510 data logger logged the data.
George Kling, 2007 Toolik Inlet Discharge Data collected in summer 2006, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/bd8a06d5dab8691912524db28cc24bcd
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2006 study season. Water level was recorded with a Stevens PGIII Pulse Generator and water temperature and conductivity with a Campbell Scientific Model 247 Conductivity (EC) and Temperature probe. A Campbell Scientific CR510 data logger logged the data.
George Kling, 2005 Toolik Inlet Discharge Data collected in summer 2003, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/07d2ff982627a2a73343c1785358d0a6
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2003 study season.
George Kling, 1994 Toolik Inlet Discharge Data collected in summer 1993, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/ae3cf97a2496946fa8ba0cf964271e56
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1993 study season.
George Kling, 1998 Toolik Inlet Discharge Data collected in summer 1997, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/33f027ad109d650964a0a084e5df7b11
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1997 study season.
George Kling, 2005 Toolik Inlet Discharge Data collected in summer 2004, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/05f608cdb85f2e558febd0fd399da5cf
Stream discharge, temperature, and conductivity of Toolik Inlet during the 2004 study season.  Discharge measurements were taken throughout each season to determine the stage-discharge relationship.
George Kling, 1995 Toolik Inlet Discharge Data collected in summer 1994, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/8cc384d957477d5ad48e926ed26dc89b
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1994 study season.
George Kling, 1999 Toolik Inlet Discharge Data collected in summer 1998, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/4b78d41f1462c952140b6d2bd4c5d3e4
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1998 study season.
George Kling, 2003 Toolik Inlet Discharge Data collected in summer 2002, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/aa535873109be90a8a1cb133b45dbc67
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2002 study season.
George Kling, 2002 Toolik Inlet Discharge Data collected in summer 2001, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/4ea8fa2d3b89f4bf2b5de7b98b6a772c
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2001 study season.
George Kling, 2001 Toolik Inlet Discharge Data collected in summer 2000, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/48d71932248e540223bd5650902dd7a4
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2000 study season.
George Kling, 1996 Toolik Inlet Discharge Data collected in summer 1995, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/20e10e53cc8b68cffbe98ed0b234d26a
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1995 study season.
George Kling, 1997 Toolik Inlet Discharge Data collected in summer 1996, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/6e9d9bd807d8ec133e91d0e665a1550d
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1996 study season.
George Kling, 2000 Toolik Inlet Discharge Data collected in summer 1999, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/37c5b37970b78525819480aa7e4db43a
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1999 study season.
George Kling, 2010 Toolik Inlet Discharge Data collected in summer 2009, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/94bb7d7a93a46ab5363033de6ee7d603
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 2009 study season.
George Kling, 1993 Toolik Inlet Discharge Data collected in summer 1992, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/9064f9d7137ac80581e75204ff4699ed
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1992 study season.
George Kling, 2000 Toolik Inlet Discharge Data collected in summer 1991, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/2cf34ca817b0e6f435b2e4e9a6de3bfe
Stream discharge, stage height, temperature, and conductivity of Toolik Inlet during the 1991 study season.
George Kling, 2019 Toolik Lake Inlet discharge data collected during summers of 2010 to 2018, Arctic LTER, Toolik Research Station, Alaska.. 10.6073/pasta/169d1bae55373c44a368727573ef70eb
Stream discharge, temperature, and conductivity of Toolik Lake Inlet stream for 2010 - 2018 study season. Water level was recorded with a Stevens PGIII Pulse Generator and Conductivity (EC) and Temperature measured with a Campbell Scientific Model 247 Conductivity and Temperature probe.
Weather Moist Acidic Tussock (MAT)
Abstract
Gaius Shaver, 2005 Daily summary of 10 cm soil temperatures in the Arctic LTER moist acidic experimental plots from 1998 to present, Toolik Lake Field Station, Alaska.. 10.6073/pasta/89b6208bc6631129949eeca791063ed3
Daily summary of 10 cm soil temperatures in the Arctic LTER moist acidic experimental plots for the control (CT), greenhouse (GH), greenhouse plus nitrogen and phosphorus (GHNP) and nitrogen and phosphorus (NP) plots. Soil temperature probes in the tundra soil were problematic with frost heaving causing the depth of measurements to change. In order to provide a consistent year to year temperature record notes on changes in depths were used to select the temperature sensor that was within + or – 3 cm of the 10 cm and then averaged daily.
Gaius Shaver, 2019 Soil and canopy temperature data from the Arctic LTER Moist Acidic Tussock Experimental plots (MAT89) from 2012 to 2018, Toolik Field Station, North Slope, Alaska. 10.6073/pasta/5394ebed0c558da5882a456d7f4da9f3
Soil and canopy temperature data from the Arctic LTER 1989 Moist Acidic Tussock Experimental plots(MAT89). The station was established in 1990 in block 2 of a 4 block random block design. The plots are located on a hillside near Toolik Lake, Alaska (68 38' N, 149 36'W).  Treatments include - control (CT), greenhouse (GH), greenhouse plus nitrogen and phosphorus (GHNP) shade (SH), shade plus nitrogen and phosphorus (SHNP) and nitrogen and phosphorus (NP). Profiles include above and within canopy, 10, 20 and 40 centimeter soil depths.  Not all treatments have a complete profile.
Gaius Shaver, James A Laundre, 2021 Soil temperature data from the control Arctic LTER Moist Acidic Tussock (MAT89) Experimental plots from 2008 to 2020, Toolik Field Station, North Slope, Alaska.. 10.6073/pasta/ab4694e723c4c3f94792bec64141c00f
Soil temperature data from the 1989 LTER Moist Acidic Tussock (MAT89) Experimental plots. The logging station was installed in 1990 in block 2 of a four block experimental block design. The plots are located on a hillside near Toolik Lake (68 38' N, 149 36'W). Two replicates depth profiles (10, 20 ,40 centimeters) were installed in each block 2 experimental plots. Frost heaving has caused uncertain depths of measurements for many of the profiles. This data set contains only the control profiles from 2008 to 2020.
Welker IPY_Snow_shrub
Abstract
Jeff Welker, Paddy Sullivan, 2011 Welker IPY snow shrub 2007 flux data, Toolik, Alaska.. 10.6073/pasta/288210c11a86847870d9c96577ad0839
This is a study of how different snow regimes effect CO2 exchange in tussock tundra and whether there are shifts in ecosystem C cycling when facets of "drift" effects are isolated. The study is part of the IPY program and is aimed at measuring the state of Arctic tundra.
Jeff Welker, Paddy Sullivan, 2011 Welker IPY snow shrub 2008 flux data, Toolik, Alaska.. 10.6073/pasta/871da73183899995b2f5e9b4f94696d9
This is a study of how different snow regimes effect CO2 exchange in tussock tundra and whether there are shifts in ecosystem C cycling when facets of "drift" effects are isolated. The study is part of the IPY program and is aimed at measuring the state of Arctic tundra.
AON Isotopes
Abstract
Erik Hobbie, John Moore, 2017 Carbon and nitrogen isotopes and concentrations in terrestrial plants from a six-year (2006-2012) fertilization experiment at the Arctic LTER, Toolik Field Station, Alaska.. 10.6073/pasta/011d1ba5f14fc9057dd67ff201174543
The data set describes stable carbon and nitrogen isotopes and carbon and nitrogen concentrations from an August 2012 pluck of a fertilization experiment begun in 2006. Fertilization was with nitrogen (N) and phosphorus (P). Fertilization levels included control, F2, F5, and F10, with F2 corresponding to yearly additions of 2 g/m2 N and 1 g/m2 P, F5 corresponding to yearly additions of 5 g/m2 N and 2.5 g/m2 P, and F10 corresponding to yearly additions of 10 g/m2 N and 5 g/m2 P. After harvest, plants were separated by species and then by tissue.
Ecotypes Disturbance experiments
Abstract
Jianwu Tang, Ned Fetcher, Michael L Moody, 2019 Ion exchange membrane measure of nutrient availability of the 2015 experimental burn at Toolik Lake Field Station, Alaska 2016 . 10.6073/pasta/ca84cec21de79fd6364d7781374f84eb
An experimental burn conducted in the summer of 2015 to provide sites for an experiment whether seeds of Eriophorum vaginatum from different ecotypes could establish in recently burned areas.  It consisted of ten 2 meter X 2 meter plots along with a similar number of control plots. There was little seedling establishment but other data were collected on the plots.  Ion exchange membranes were used to measure nutrient availability over two time periods:  Early season (June) and mid season (July).
Thomas Parker, Jianwu Tang, Ned Fetcher, Michael L Moody, 2019 Soil respiration from a mycorrhizal and root exclusion experiment at Toolik Lake Field Station and Anaktuvuk River Burn, Alaska in 2016. 10.6073/pasta/40c946f076355aa2523ee4847f745b51
Organic soil from either the Anaktuvik severe burn or Toolik Lake were collected to test of effect of removal of mycorrhizae on decompositon of tundra at Toolik Lake and the Anaktuvuk Burn IN 2016.
A licor 6400 with 6400-09 soil respiration chamber was used to measure soil respiration (efflux) from the cores on a weekly basis.
Ned Fetcher, Jianwu Tang, Michael L Moody, 2019 Effects of 2015 experimental burn on Eriophorum vaginatum at Toolik Lake Field Station, Alaska 2016. 10.6073/pasta/99e3e2d2aa874e56fb6d63551134662e
This was an experimental burn conducted in the summer of 2015 to provide sites for an experiment to see whether seeds of Eriophorum vaginatum from different ecotypes could establish in recently burned areas.  It consisted of ten 2 meter X 2 meter plots along with a similar number of control plots. There was little seedling establishment but other data have been collected on the plots.
FishScape Genomics
Abstract
Heidi Golden, 2019 Arctic grayling neutral genomic microsatellite loci from the Kuparuk, the Sagavanirktok (primarily Oksrukuyik Creek) and the Itkillik (primarily the I-Minus outlet stream) watersheds, 2010-2014. 10.6073/pasta/bd8c1cc011851190a291862d6b3bfa52
Since 2009, The FISHSCAPE Project (National Science Foundation grants: 1719267, 1417754, and 0902153), based at Toolik Field Station, has monitored physical, chemical, and biological parameters within three watersheds: The Kuparuk (including Toolik Lake and Toolik outlet stream), The Sagavanirktok (primarily Oksrukuyik Creek, but also including sections of the Atigun River and Tea and Galbraith Lakes), and Itkillik (primarily the I-Minus outlet stream a tributary that that feeds into the Itkilik River).  Goals of the FISHSCAPE project are to understand and predict the adaptability and persi
Lakes Chlorophyll and Primary Production
Abstract
Anne Giblin, George Kling, 1995 Chlorophyll a and primary productivity data for various lakes near Toolik Research Station, Arctic LTER. Summer 1983 to 1989.. 10.6073/pasta/26bc0b31099bafcdf964dd47b0d654ec
Decadal file describing the chlorophyll a and primary production in various lakes near Toolik Research Station (68 38'N, 149 36'W) during summers from 1983 to 1989. Sample site descriptors include an assigned number (sortchem), site, date of analysis (incubation), time, depth and rates of primary production. The amount of chlorophyll a and pheophytin were also measured.
Anne Giblin, George Kling, 2022 Chlorophyll a and primary productivity data for various lakes near Toolik Research Station, Alaska, Arctic LTER. Summer 2010 to 2020. 10.6073/pasta/1981b68e5b34e2a87436cdf76e40b417
Decadal file describing the chlorophyll a and primary production in various lakes near Toolik Research Station (68 38'N, 149 36'W) during summers from 2010 to 2020. Sample site descriptors include an assigned number (sortchem), site, date of analysis (incubation), time, depth and rates of primary production. The amount of chlorophyll a and pheophytin were also measured.
Anne Giblin, George Kling, 1992 Chlorophyll a and primary productivity data for various lakes near Toolik Research Station, Arctic LTER. Summer 1990 to 1999.. 10.6073/pasta/1b1538449340e68760cf86d92d7082de
Decadal file describing the chlorophyll a and primary production in various lakes near Toolik Research Station (68 38'N, 149 36'W) during summers from 1990 to 1999. Sample site descriptors include an assigned number (sortchem), site, date of analysis (incubation), time, depth and rates of primary production. The amount of chlorophyll a and pheophytin were also measured.
Anne Giblin, George Kling, 1992 Chlorophyll a and primary productivity data for various lakes near Toolik Research Station, Arctic LTER. Summer 2000 to 2009.. 10.6073/pasta/c14fe6e5bb0e2a2c6a74d51a6943c667
Decadal file describing the chlorophyll a and primary production in  various lakes near Toolik Research Station (68 38'N, 149 36'W) during summers from 2000 to 2009.  Sample site descriptors include an assigned number (sortchem), site, date of analysis (incubation), time, depth and rates of primary production.  The amount of chlorophyll a and pheophytin were also measured.
Multi-trophic Impacts Animals
Abstract
Helen Chmura, 2018 Lapland longspur and Gambel's white crowned sparrow egg and nestling survival near Toolik Field Station, Alaska, summers 2012-2016 . 10.6073/pasta/d56585f4793c93a37669d13a916b0437
This data set contains information about the daily status (alive/ dead) of Lapland longspur and Gambel's white-crowned sparrow eggs  and nestlings studied near Toolik Field Station from 2012 to 2
Helen Chmura, 2018 Arthropod pitfall trap biomass captured (weekly) and pitfall biomass model predictions (daily) near Toolik Field Station, Alaska, summers 2012-2016.. 10.6073/pasta/2a68a3a7e72d175426edf5cae7904062
This data set contains information about the per pitfall trap arthropod biomass captured (or modeled using GAM modelling approaches) near Toolik Field Station from 2012 to 2016 under  National Science Foundation (NSF) Office of Polar Programs ARC 0908444 (to Laura Gough), ARC 0908602 (to Natalie Boelman), and ARC 0909133 (to John Wingfield). It is associated with publication  DOI: 10.1111/jav.01712.
Helen Chmura, 2018 Arthropod biomass captured by sweepnet (weekly) and sweepnet biomass model predictions (daily) near Toolik Field Station, Alaska, summers 2012-2016. 10.6073/pasta/217d7abf85fd5fa048a00ae0a9123d2b
This data set contains information about the per sample sweepnet arthropod biomass captured (or modeled using GAM modelling approaches) near Toolik Field Station from 2012 to 2016 under  National Science Foundation (NSF) Office of Polar Programs ARC 0908444 (to Laura Gough), ARC 0908602 (to Natalie Boelman), and ARC 0909133 (to John Wingfield). It is associated with publication  DOI: 10.1111/jav.01712.
 
Helen Chmura, John C Wingfield, Marilyn Ramenofsky, 2020 Autumn departure from breeding site (date and time) in Gambel's white crowned sparrows near Toolik Field Station, Alaska, summers 2014-2016. 10.6073/pasta/a9bf73d9ffef03259089634e81c4a66a
This data set contains information
Photochemistry Chemistry
Abstract
George Kling, Rose Cory, 2014 Apparent quantum yield data set for NSF Photochemistry project on the North Slope of Alaska.. 10.6073/pasta/aa2d0ed4ddef6e76c3ef8d6c12460607
Data file describing the apparent quantum yield of photo-oxidation, photo-mineralization, and photo-stimulated microbial respiration of dissolved organic carbon in water samples collected at various sites near Toolik Lake on the North Slope of Alaska. A synthesis of the data presented here is published in Cory et al. 2013, PNAS 110:3429-3434, and in Cory et al. 2014, Science 345:925-928.
George Kling, Rose Cory, 2014 Photochemistry data set for NSF Photochemistry project on the North Slope of Alaska.. 10.6073/pasta/2f9433d6a608e82e1dd4fa23175c1f59
Data file containing optical characterization of colored dissolved organic matter (CDOM). Data include CDOM absorption coefficients, water column light attenuation coefficients, specific UV light absorbance (SUVA254), spectral slope ratio, and fluorescence index from waters near Toolik Lake on the North Slope of Alaska. A synthesis of the data presented here is published in Cory et al. 2013, PNAS 110:3429-3434, and in Cory et al. 2014, Science 345:925-928.
Terrestrial Plant Communities and Plant Species List
Abstract
Laura Gough, 2013 2011 relative percent cover of plant species in LTER moist acidic tundra experimental plots and in new experimental plots established in 2006.. 10.6073/pasta/ac0b52cfafad29a666c71299fc6085b7
In 2011, relative percent cover of plant species was measured in LTER moist acidic tundra experimental plots and in new experimental plots established in 2006.
Laura Gough, 2012 2010 relative percent cover of plant species in LTER moist acidic, dry heath, and moist non-acidic tundra experimental plots; and in new experimental plots established in 2006.. 10.6073/pasta/9a838fd30e3fdde2ea9acba37afb2bfa
In 2010, Relative percent cover of plant species was measured in the Arctic LTER's experimental and control plots across several habitats: moist acidic, dry heath, and moist non-acidic tundra; in new variable (low) nutrient addition experimental plots established in 2006; and for Sagavanirktok River toposequence plots in tussock and heath tundra.
Laura Gough, 2009 Arctic LTER 2007: Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic tussock and dry heath tundra.. 10.6073/pasta/fec6fbb53dafa0c6777110fa2fcda507
Relative percent cover was measured for plant species on Arctic LTER experimental plots at Toolik field station in moist acidic tussock and dry heath tundra.
Laura Gough, 2010 Relative percent cover of plant species in LTER moist acidic, dry heath, and moist non-acidic tundra experimental plots; in new experimental plots established in 2006; and for Sagavanirktok River plots in tussock and heath tundra, Norht Slope Alaska 2008.. 10.6073/pasta/1553e86b8f7ebcc03b757fccc17cc13f
In 2008, Relative percent cover of plant species was measured in the Arctic LTER's experimental and control plots across several habitats: moist acidic, dry heath, and moist non-acidic tundra; in new variable (low) nutrient addition experimental plots established in 2006; and for Sagavanirktok River toposequence plots in tussock and heath tundra.
Laura Gough, 2007 Arctic 2006: Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic, dry heath and moist non-acidic tundra, and for Sagavanirktok River plots in tussock and heath tundra.. 10.6073/pasta/7b0a8419c87c05ec1fe4fb708902d428
Relative percent cover was measured for plant species on Arctic LTER experimental plots at Toolik field station in moist acidic and moist non acidic tussock tundra, and dry heath tundra, and on Sagavanirktok River toposequence plots in tussock and heath tundra.
Laura Gough, 2007 Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic, dry heath and moist non-acidic tundra, and for Sagavanirktok River plots in tussock and heath tundra, North Slope Alaska 2004.. 10.6073/pasta/30f0822d9a7d4e2980300052a67e60b1
Relative percent cover was measured for plant species on Arctic LTER experimental plots at Toolik field station in moist acidic and moist non acidic tussock tundra, and dry heath tundra, and on Sagavanirktok River toposequence plots in tussock and heath tundra.
Laura Gough, 2001 Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra, Toolik Field Station, Alaska, Arctic LTER 1999.. 10.6073/pasta/d780d20c2fbee479d46c0f99fcf26c9a
Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra, Toolik Field Station, Alaska, Arctic LTER 1999.
Laura Gough, 2007 Arctic LTER 2005: Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic, moist non-acidic and dry heath tundra.. 10.6073/pasta/c7344c7f8af925285bfb25632c545649
Relative percent cover was measured for plant species on Arctic LTER experimental plots at Toolik field station in moist acidic and moist non acidic tussock tundra, and dry heath tundra.
Laura Gough, 2003 Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra, Toolik Field Station, Alaska 2002. 10.6073/pasta/2185fb606bfb9e55d50e4fe670c6298a
Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra.
Gaius Shaver, Laura Gough, 1998 Vascular plant species list, by quadrat, for harvests of tussock , wet sedge and dry heath tundra and a toposequence which included "shrub/lupine," "riverside willow" and "footslope Equisetum" communities North Slope Alaska, Arctic LTER 1983-1996.. 10.6073/pasta/19d4931588b100dc2a0abc23d849e873
Vascular plant species list, by quadrat, for harvests of tussock tundra, wet sedge tundra, dry heath tundra, and a toposequence which also included "shrub/lupine," "riverside willow" and "footslope Equisetum" communities. Includes results of long-term nutrient enrichment, increased temperature, and shade houses in selected tundra types.
Laura Gough, 2004 Arctic LTER 2001: Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra.. 10.6073/pasta/d0eff382d7c0564df5e5524e4a4e65a9
Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra.
Laura Gough, 2002 Arctic LTER 2000: Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra.. 10.6073/pasta/b9cc1f0f4215535754a4acd8e29bfc0c
Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra.
Jennie McLaren, 2018 Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and non-acidic tundra, Arctic LTER Toolik Field Station, Alaska 2013. . 10.6073/pasta/8a2999c9ed297a184aaca7057e1ae177
Relative percent cover was measured for plant species on Arctic LTER experimental plots at Toolik field station in moist acidic and non-acidic tundra. 
Laura Gough, 2021 Relative percent cover of plant species in low nutrient LTER moist acidic tundra experimental plots (MAT06) established in 2006 for years 2008, 2010-2020, Arctic LTER Toolik Field Station Alaska. . 10.6073/pasta/3b28ed94fe7916e840ff3313dbe3450c
Relative percent cover of plant species was measured in low nutrient LTER moist acidic tundra experimental plots (MAT06). Treatments include a gradient of nitrogen and phosphorus additions along with ammonium and nitrate alone.
Laura Gough, 2019 Relative percent cover of plant species for 2014 in LTER moist acidic tundra experimental plots established in 1981, Arctic LTER Toolik Field Station, Alaska. 10.6073/pasta/f619b425d2997d9f2f831cff207a1819
Relative percent cover of plant species was measured in moist acidic tundra experimental plots begun in 1981 in 2014. Treatments include Control and Nitrogen and Phosphorus.
Laura Gough, 2019 Relative percent cover of plant species for years 2013 2014 2016 2017 in LTER dry heath tundra experimental plots established in 1989, Arctic LTER Toolik, Field Station Alaska. 10.6073/pasta/25d3f0db55e9df6f99fc3e9596433090
Relative percent cover of plant species was measured in Arctic Long-Term Ecological Research (ARC-LTER) Dry Heath experimental plots. Treatments include Nitrogen Phosphorus (NP), and Control (CT), Nitrogen Phosphorus Unfenced (NFNP), Nitrogen Phosphorus Small Fenced (SFNP), Nitrogen Phosphorus Large Fenced (LFNP), Control (CT), Control Small Fenced (CTSF), and Control Large Fenced (LFCT).
Laura Gough, 2019 Relative percent cover of plant species for years 2012-2017 in the Arctic Long-term Ecological Research (ARC-LTER) 1989 moist acidic tundra (MAT89) experimental plots, Toolik Field Station, Alaska. . 10.6073/pasta/f31def760db3f8e6cfee5fee07cc693e
Relative percent cover of plant species was measured in ARC-LTER 1989 moist acidic tundra experimental plots. Treatments include Control (CT), Nitrogen Phosphorus (NP), Nitrogen (N), Phosphorus (P), and Greenhouse Control (GHCT). In 1996 on unassigned plots, an experiment that manipulate herbivory presence and nutrients was started. Treatments include Control Unfenced (NFCT), Nitrogen Phosphorus Unfenced (NFNP), and Small Fenced Control (CTSF). Not all treatments were measured each year.
Thermokarst MEL
Abstract
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation F - increased N deposition. 10.6073/pasta/04a2ff938b67d9d1dd4e648d370856b6
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. A 100 yr old thermal erosion event response to N fertilization.. 10.6073/pasta/a1464ee098b4693f2aea4078b3e5a35c
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra control simulation. 10.6073/pasta/46323340d5b33913e9399e750cb3600b
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. A 100 yr old thermal erosion event response to NP fertilization.. 10.6073/pasta/f7bb757427c523e546489a2f4cf957d4
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation E - reduced Phase I soil organic matter. 10.6073/pasta/5534808e2359f56db12593fde6bb42d0
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. A 100 yr old thermal erosion event under control conditions.. 10.6073/pasta/8adc3b89c8c73fe1870ad82536575f99
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation A - increased Phase II soil organic matter. 10.6073/pasta/83564c3cce28be248d93b384d58ffda1
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. A 100 yr old thermal erosion event response to P fertilization.. 10.6073/pasta/7d253bd599910b0a6497c83d74369f32
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation I - doubled Phase I decomposition. 10.6073/pasta/3171b861f8c2009bdd2d1acdf5738179
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation J - doubled Phase II decomposition. 10.6073/pasta/56b00b38bd5dd8c1dc2b1b8b0b1255a8
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation H - increased N and P deposition. 10.6073/pasta/4f6210c24640c0070a871ca95cd53b9f
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra shade house simulation. 10.6073/pasta/8cf3a98c0e86a5b7e17fe9b3ada34199
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra phosphorus fertilization simulation. 10.6073/pasta/055aebf21d403577c188049995c75ca6
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation B - increased Phase I soil organic matter. 10.6073/pasta/e75ab68cb99fd5094c4ebcb660986e61
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra fertilized greenhouse simulation. 10.6073/pasta/e25f1d4053e23f89a1c0e5e93c967553
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra recovery after a thermal erosion event. 10.6073/pasta/ba85d7312407e90a46fac604467f3ac7
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra nitrogen and phosphorus fertilization simulation. 10.6073/pasta/fa66c6160400843ee8936df23b91881c
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation D - reduced Phase I and Phase II soil organic matter. 10.6073/pasta/9f471a11c32968f2aebcc27d292a3694
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra nitrogen fertilized simulation. 10.6073/pasta/be12688c444a9546f2d5fae9182f78f1
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra recovery after a thermal erosion event: saturating nutrients.. 10.6073/pasta/07cba61c48ce8b31830daac1986d1c21
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation C - increased Phase I and Phase II soil organic matter. 10.6073/pasta/b3eb66158a1b1d77148ff63d145e8d90
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra regrowth after a thermal erosion event: Simulation G - increased P deposition. 10.6073/pasta/22cdf3a3353448cb0f819b5121a5c014
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Tussock tundra greenhouse simulation. 10.6073/pasta/97587f197c22b52ab9e637ffca4fceeb
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Andrea Pearce, 2014 Long term response of arctic tussock tundra to thermal erosion features: A modeling analysis. Undisturbed tussock tundra. 10.6073/pasta/f83d33ff75b3ab2c690564d7c597b364
The Multiple Element Limitation (MEL) model is used to simulate the recovery of Alaskan arctic tussock tundra to thermal erosion features (TEFs) caused by permafrost thaw and mass wasting. TEFs could be significant to regional carbon (C) and nutrient budgets because permafrost soils contain large stocks of soil organic matter (SOM) and TEFs are expected to become more frequent as climate warms. These simulations deal only with recovery following TEF stabilization and do not address initial losses of C and nutrients during TEF formation.
Tussock Watershed Discharge
Abstract
George Kling, 1998 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1996. 10.6073/pasta/6bd568dba3bfaa58181cfb8abff4d639
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1996.
George Kling, 1999 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1997. 10.6073/pasta/4c9e9b2bb4861e73dfeaa6bb5e8fb9cd
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1997.
George Kling, 2001 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1999. 10.6073/pasta/4b943b5a2de08aca8b7dd48542476f12
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1999.
George Kling, 2003 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2001. 10.6073/pasta/11b3344269ff08158edfac93c23de29b
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2001.
George Kling, 1996 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1994. 10.6073/pasta/88124e3e8b4a8bbbd49fbb64d64b62d3
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1994.
George Kling, 1995 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1993. 10.6073/pasta/f14f444ce51fa77d5f577db4cdbb0564
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1993.
George Kling, 1994 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1992. 10.6073/pasta/1e224958e278841f9a7a035007c65f21
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1992.
George Kling, 2002 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2000. 10.6073/pasta/53a45c5a110f0af13c5ae0ed3154b8ca
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2000.
George Kling, 1993 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1991. 10.6073/pasta/089d81bc49eab1df6cf2b24f40a6c1d3
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1991.
George Kling, 2000 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1998. 10.6073/pasta/fa1c2e6a04b01d037d9424bded342cd6
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1998.
George Kling, 1997 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1995. 10.6073/pasta/7e79c3adc44e965240f1c9d75ea676fb
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 1995.
George Kling, 2004 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2002. 10.6073/pasta/5c3e5f2495561903c027c6b06544cf70
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2002.
George Kling, 2005 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2003. 10.6073/pasta/b24b8bb901a4b1b825e09c7ab494b39d
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2003.
George Kling, 2007 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2005. 10.6073/pasta/045236b13d660da362f20f690f657b92
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2005.
George Kling, 2006 Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2004. 10.6073/pasta/459c62f862e1724005eb7d91648bfb44
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2004.
Weather Moist Non-Acidic Tussock (MNT)
Abstract
Sarah Hobbie, James A Laundre, 2021 Hourly temperature and humidity data from the LTER Moist Non-acidic Tussock Experimental plots (MNT).. 10.6073/pasta/a48892da5bc9eab27b18d2364dea6998
Hourly data from the Toolik Moist Non-acidic Tussock Experimental plots (MNT). In 1999 a Campbell CR10x data logger was installed in block 2 of the experimental plots. The plots are located on a hillside near Toolik Lake (68 38' N, 149 36'W). Sensors were placed in control and greenhouse sites. Soil temperature profiles are reported in another file (1999-present_MNTsoil).
AON Cherskii
Abstract
M. Syndonia Bret-Harte, Sergey Zimov, Eugenie Euskirchen, Gaius Shaver, 2010 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2010. 10.6073/pasta/29e5b0085da3935a4cf03eea053834ad
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Sergey Zimov, Gaius Shaver, Eugenie Euskirchen, 2008 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2008. 10.6073/pasta/e6b33a58d12fc0102b7a6c9bbf6f21dc
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Sergey Zimov, Eugenie Euskirchen, Gaius Shaver, 2011 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2011. 10.6073/pasta/afb6900e4d0d15aeb15c92279200199f
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Sergey Zimov, Eugenie Euskirchen, Gaius Shaver, 2013 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2013. 10.6073/pasta/26c5b917fd648829fa2fda488ea926b8
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Sergey Zimov, Eugenie Euskirchen, Gaius Shaver, 2012 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2012. 10.6073/pasta/d6f0a023c99d69f92c2c82243096eef6
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Sergey Zimov, Gaius Shaver, Eugenie Euskirchen, 2009 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2009. 10.6073/pasta/e7513b90e3022b3af0972614a32c018d
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Sergey Zimov, Eugenie Euskirchen, Gaius Shaver, 2014 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2014. 10.6073/pasta/c1ed6d8d4dce62008d2a907d8f93ab48
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia. These will form part of a network of observatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data points as part of the International Polar Year.
M. Syndonia Bret-Harte, Sergey Zimov, Eugenie Euskirchen, Gaius Shaver, 2017 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2015. 10.6073/pasta/7faa303fb88e25c6a4100656d779e372
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of obervatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data  points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
M. Syndonia Bret-Harte, Sergey Zimov, Eugenie Euskirchen, Gaius Shaver, 2017 Eddy Flux Measurements, Pleistocene Park, Cherskii, Russia - 2016. 10.6073/pasta/33b883392937af888cbd3646680236dd
In contribution to the Arctic Observing Network, the researchers have established two observatories of landscape-level carbon, water and energy balances at Imnaviat Creek, Alaska and at Pleistocene Park near Cherskii, Russia.  These will form part of a network of obervatories with Abisko (Sweden), Zackenburg (Greenland) and a location in the Canadian High Arctic which will provide further data  points as part of the International Polar Year.  This particular part of the project focuses on simultaneous measurements of carbon, water and energy fluxes of the terrestrial landscape at hourly, da
FishScape Common Garden
Abstract
Heidi Golden, 2019 Growth data for young of the year arctic grayling raised in a aquatic common garden at Toolik Field Station, summer 2017. 10.6073/pasta/44d78f21fbf921195da3ca6895ea7189
Since 2009, the FISHSCAPE  Project (Grant #1719267, 1417754, and 0902153), based at Toolik Field Station, has monitored physical, chemical, and biological parameters within three watersheds: The Kuparuk (including Toolik Lake and Toolik outlet stream); The Sagavanirktok (primarily Oksrukuyik Creek, but also including sections of the Ailish and Atigun Rivers and the Galbraith Lakes);  and The Itkillik (primarily the I-Minus outlet stream, a tributary that that feeds into the Itkilik River).
Heidi Golden, 2019 Survivorship data for young of the year Arctic grayling raised in an aquatic common garden at Toolik Field Station, summer 2017 . 10.6073/pasta/3c127c31cef3ecbdac97ffdf86ccf026
Since 2009, the FISHSCAPE  Project (grant #  1719267, 1417754, and 0902153), based at Toolik Field Station, has monitored physical, chemical, and biological parameters within three watersheds: The Kuparuk (including Toolik Lake and Toolik outlet stream); The Sagavanirktok (primarily Oksrukuyik Creek, but also including sections of the Ailish and Atigun Rivers and the Galbraith Lakes);  and The Itkillik (primarily the I-Minus outlet stream, a tributary that that feeds into the Itkilik River).
Multi-trophic Impacts Weather
Abstract
Natalie Boelman, 2013 Daliy weather data (wind, temperatrue, humididty, pressure, precipitation) from Roche Mountonnee , in the northern foothills of the Brooks Range, Alaska, summers 2010-2014.. 10.6073/pasta/82051b684ec80c6039e32ee4e72e21be
Daily weather data from mid May to late July 2011 to 2013 from Roche Moutonnee (south of Toolik Field Station and Arctic LTER), in the northern foothills of the Brooks Range, Alaska. Parameters measured include: wind speed, wind directions, temperature, humidity, pressure and precipitation.
Natalie Boelman, 2013 Daliy weather data from Sagavanirktok River DOT site, in the northern foothills of the Brooks Range, Alaska, May-July 2010-2014.. 10.6073/pasta/b95d5256dc6a00c506937a0bc698a39c
Daliy weather data from mid May to late July 2011 to 2013 from Sagavanirktok Department of Transport (DOT) site (south of Toolik Field Station and Arctic LTER), in the northern foothills of the Brooks Range, Alaska. Parameters measured include: wind speed, wind directions, temperatrue, humididty, pressure and precipitation. (Rich, et al 2013).
Helen Chmura, 2018 Hourly meteorological data gapfilled for sensor downtimes collected near Toolik Field Station, Alaska, summers 2012-2016. 10.6073/pasta/7368b2e1928127bdf51b9ed7d87e7f52
This data set includes meteorological parameters collected near Toolik Field Station from 2012 to 2016 under National Science Foundation (NSF) Office of Polar Programs ARC 0908444 (to Laura Gough), ARC 0908602 (to Natalie Boelman), and ARC 0909133 (to John Wingfield).  It also includes meteorological data collected by two additional entities that are available on public repositories. Toolik data reflect data collected by the Toolik Envronmental Data Center and Imnavait data reflect data collected by the Arctic Observatory Network (AON).
Helen Chmura, 2018 Presence/absence of new snow-fall scored from time-lapse photography collected near Toolik Field Station, Alaska, summers 2012-2016. 10.6073/pasta/a1d568eef49aabb3c3ff77de4ea2bbcb
This data set describes the presence/absence of new snowfall approximated daily using time -lapse photography images near Toolik Field Station during summers from 2012 to 2016 under National Science Foundation (NSF) Office of Polar Programs ARC 0908444 (to Laura Gough), ARC 0908602 (to Natalie Boelman), and ARC 0909133 (to John Wingfield).  Additional cameras funded by other grants were also used for scoring including multiple Toolik EDC timelapse images taken at Toolik, Atigun Ridge, and Imnavait.
Streams Fish
Abstract
William "Breck" Bowden, 1992 Arctic Grayling Growth on the Oksrukuyik Creek near Toolik Field Station, Alaska 1990-2001. 10.6073/pasta/51ca0640049b0d2dc3706b25bdc6d13e
Arctic Grayling were collected at designated stations on the Oksrukuyik from 1990 to current time. Phosphorus addition has occurred from 1991 to 1996; station sites are relative distance from the original 1991 dripper. Grayling were caught, pit tagged, weighed, measured, and then released back into the river.
William "Breck" Bowden, 1988 Arctic Grayling Growth in the Kuparuk River; data from 1986-2003. 10.6073/pasta/e74fcf307dea22fc376978f6f115517e
Adult Arctic Grayling were caught and tagged in the Kuparuk River. A second fishing campaign occurred later in the summer, and any fish that was recaptured was remeasured to determine growth. Phosphorus addition has occurred since 1983; station sites are relative distance from the original 1983 phosphorus dripper. Stations include sites in a reference, recovery, and fertilized reach. Reaches were defined based on the location of phosphorous addition (see methods). Arctic Grayling were caught early in the field season, tagged, and recaptured late in the field season.
Linda Deegan, William "Breck" Bowden, Alex Huryn, 2019 Arctic Grayling length, weight and tag data from Arctic LTER Streams project, Toolik Filed Station Alaska, 1985 to 2018. 10.6073/pasta/87c65290d94c2cefd1692df861fe9aa7
Since 1983, the Streams Project at the Toolik Field Station has monitored physical, chemical, and biological parameters in a 5-km, fourth-order reach of the Kuparuk River near its intersection with the Dalton Highway and the Trans-Alaska Pipeline. In 1989, similar studies were begun on a 3.5-km, third-order reach of a second stream, Oksrukuyik Creek. Fish were collected on each river. Station locations, representing kilomter values certain distances from original phosphorus dripper (see method) were noted.
Terrestrial Plant Phenological and Growth Data
Abstract
Laura Gough, 2008 Growth data was collected on one deciduous shrub species on Arctic LTER experimental plots in moist acidic tussock and dry heath tundra 2004, Toolik Field Station, Alaska.. 10.6073/pasta/433d45e29be3c75342ab66182f235d17
Weekly growth of plant species of three growth forms were measured in the ninth year of a long-term experiment at Toolik Field Station. The experimental treatments excluded small and large mammalian herbivores and increased soil nutrients in two arctic Alaskan tundra communities: moist acidic tussock and dry heath. This data set reports the deciduous dwarf shrub species. Please see 2004lggrgram for the tussock-forming and rhizomatous graminoid species growth data.
Laura Gough, 2008 Growth data was collected on four graminoid species on Arctic LTER experimental plots in moist acidic tussock and dry heath tundra 2004, Toolik Field Station, Alaska.. 10.6073/pasta/8997387154a42d594073cd9bc21283cf
Weekly growth of plant species of three growth forms were measured in the ninth year of a long-term experiment at Toolik Field Station. The experimental treatments excluded small and large mammalian herbivores and increased soil nutrients in two arctic Alaskan tundra communities: moist acidic tussock and dry heath. This data set reports the four graminoid (both tussock and rhizomatous forms) species. Please see 2004lggrbnan for Betula nana (dwarf shrub) growth data.
Gaius Shaver, 1998 Phenological stages of evergeen plants were observed at a long term experimental moist tussock tundra site (Arctic LTER) 1996 near Toolik Lake, AK.. 10.6073/pasta/b9499790f4f7cb3e3fe7b91531f732f6
Phenological stages of evergeen plants were observed at a long term experimental moist acidic tussock tundra (Arctic LTER) in 1996 near Toolik Lake, AK. Also, ITEX maximum growth measurements were recorded on August 19th (moist tussock tundra). Experimental treatments at each site included factorial NxP, greenhouse and shadehouse and were begun in 1989. See 96gsphdc and 96gsphsg for phenological data on deciduous and sedge species.
Gaius Shaver, 1993 Stems were measured, and aged from Ledum palustre and Salix pulchra on LTER Moist Acidic Tussock Tundra 1981 plots summer 1990, Toolik Lake Filed Station, AK.. 10.6073/pasta/be23ab065016ae190ff2e6ead5f4a9ad
Stems were measured, and aged from Ledum palustre and Salix pulchra species on treated plots at Toolik Lake, AK. Stem secondary growth in per cent per year was estimated from the slope of weight per unit length vs. age.
Gaius Shaver, 1998 Leave growth of Eriophorum angustifolium and Carex rotundata was measured in a long-term experimental wet sedge tundra site, Arctic LTER 1996, Toolik Lake, AK.. 10.6073/pasta/a53c2848cc9e0dd4f0ef02dad5b86f48
Leave growth of Eriophorum angustifolium and Carex rotundata was measured in a long-term experimental wet sedge tundra site near Toolik Lake, AK. Experimental treatments at each site included factorial NxP, greenhouse and shadehouse and were begun in 1989 (Toolik sites).
Gaius Shaver, 1987 Seasonal patterns of leaf exsertion, elongation and senescence for Eriophorum vaginatum and Carex bigelowii was measured in mesic tussock tundra sites 1985 to 1986, near Toolik Lake, AK.. 10.6073/pasta/9340f235aed5e4db991070d02b8f5c2a
Seasonal patterns of leaf exsertion, elongation and senescence for Eriophorum vaginatum and Carex bigelowii was measured in mesic tussock tundra sites near Toolik Lake, AK. In addition, the response of both species to NP fertilizer and to variation in site fertility (after track versus non-track areas) were also assayed and compared. The research was done over two full growing seasons.
Gaius Shaver, 1998 Phenological stages of sedges were observed at a long term experimental moist tussock tundra site and a long-term experimental wet sedge tundra sites (Arctic LTER) for 1996 near Toolik Lake, AK.. 10.6073/pasta/7ce217450269be5adbca2fbf595c46dd
Phenological stages of sedges were observed at a long term experimental moist tussock tundra site and a long-term experimental wet sedge tundra sites near Toolik Lake, AK. Also, ITEX maximum growth measurements were recorded on August 19th (moist tussock tundra). Experimental treatments at each site included factorial NxP, greenhouse and shadehouse and were begun in 1989. See 96gsphdc.html and 96gsphsg.html for phenological data on deciduous and evergeen species.
Gaius Shaver, M. Syndonia Bret-Harte, 1998 Data on weights and lengths from retrospective growth analysis of different stem age classes of Betula nana ramets from the Arctic LTER Nutrient and Warming manipulations in mosit acidic tussock tundra at 1995, Toolik Lake, AK.. 10.6073/pasta/e000a9e4cc98e60d1ed631d68b26246b
This data file contains the data on weights and lengths from retrospective growth analysis of different stem age classes of Betula nana ramets from the Arctic LTER Nutrient and Warming manipulations in moist acidic tussock tundra at Toolik Lake.
Gaius Shaver, 2006 Numbers of Eriophorum vaginatum inflorescences, both unclipped and clipped by small mammals, were counted in experimental small mammal exclosure plots, Arct LTER mosit acidic tussock site, Toolik Field Station, Alaska, 1997 to present.. 10.6073/pasta/470aaad3ff6d3fd46b4064191988b375
Numbers of Eriophorum vaginatum inflorescences, both unclipped and clipped by small mammals, were counted in experimental plots. The plots are setup in moist acidic tussock tundra near Toolik Field Station, Alaska ((8 degrees 37' 27" N, 149 degrees 36' 27"W) and include fenced exclosures in both fertilized and unfertilized tundra.
Gaius Shaver, 1998 Phenological stages of deciduous plants were observed at a long term experimental moist acidic tussock tundra site, Arctic LTER 1996 Toolik Lake, AK.. 10.6073/pasta/dd7aca6774ad4dc028c817c45fbd68ae
Phenological stages of deciduous plants were observed at a long term experimental moist acidic tussock tundra site (Arctic LTER) near Toolik Field Station, AK. Also, ITEX maximum growth measurements were recorded on August 19th (moist tussock tundra). Experimental treatments at each site included factorial NxP, greenhouse and shadehouse and were begun in 1989. See 96gspheg.html and 96gsphsg. html for phenological data on evergreen and sedge species.
Weather Toolik Field Station Met
Abstract
Gaius Shaver, 2000 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1998.. 10.6073/pasta/5af19f6f0b75650b4fff8e46ba8ccdcd
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 2002 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 2000.. 10.6073/pasta/66b4074425afab3f20eb2817f0e79966
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 2007 Daily weather summaries from Toolik Field Station Meteorological Station, Toolik Lake, Alaska for 2006.. 10.6073/pasta/476d2550af7fb5eaf876a7efea1c3aa0
Daily weather summaries from Toolik Field Station Meteorological Station, Toolik Lake, Alaska. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and precipitation recorded near Toolik Lake.
Gaius Shaver, 2007 Daily weather summaries from Toolik Field Station Meteorological Station, Toolik Lake, Alaska for 2005.. 10.6073/pasta/42723affce67a988f5379024d3b8aeba
Daily weather summaries from Toolik Field Station Meteorological Station, Toolik Lake, Alaska. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and precipitation recorded near Toolik Lake.
Gaius Shaver, 2003 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 2002.. 10.6073/pasta/87f58b6b0e233abcac326fea3731ced7
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1993 Daily weather data file for Arctic Tundra LTER site at Toolik Field Station, Norht Slope, AK 1992. 10.6073/pasta/10a4ab33cb38a34b9be36b49eed13493
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums

and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1995 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1993.. 10.6073/pasta/9a2c319f0ebdb26bdbcc5c704ed448db
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 2001 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1999.. 10.6073/pasta/c97e2bb0b819abf0577fda102a6eb09f
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1996 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1994.. 10.6073/pasta/9409082497cf7eab8d52f448f8c88d76
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1999 Daily weather data file for Arctic Tundra LTER site at Toolik Field Station, Norht Slope, AK 1988.. 10.6073/pasta/0f4dde48811c8860ec6512bc19ac2ce7
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, James A Laundre, Jessica Cherry, 2011 Daily weather summaries from Toolik Field Station Meteorological Station, Toolik Lake, Alaska for 2009.. 10.6073/pasta/395a682ad8faf805ea4b9de2c062b183
Daily weather summaries from Toolik Field Station Meteorological Station, Toolik Lake, Alaska. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and precipitation recorded near Toolik Lake.
Gaius Shaver, 2003 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 2001.. 10.6073/pasta/2524735bb57d2148944422a9d5d0f1d6
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1991 Daily weather data file for Arctic Tundra LTER site at Toolik Field Station, AK, Arctic LTER 1990.. 10.6073/pasta/9487ef0a6019fdb3d6d7abbdaad8e133
Daily weather data file for Arctic Tundra LTER site at Toolik Field Station, AK. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1997 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1995.. 10.6073/pasta/c52122ef002e619ab2399a337fce4154
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1998 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1996.. 10.6073/pasta/0c5f4c3d60635981e4e3eabc1e2ab006
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1999 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1997.. 10.6073/pasta/c64771911ac429222068ba7f245298dc
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 2009 Daily weather summaries from Toolik Field Station Weather Station, Toolik Lake ARC LTER, Alaska for 2008.. 10.6073/pasta/4264f98a401727c2b6ba7cf9d9381f33
Daily weather summaries from Toolik Field Station Meteorological Station, Toolik Lake, Alaska. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and precipitation recorded near Toolik Lake.
Gaius Shaver, 1990 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1989.. 10.6073/pasta/1f5d5f2529f0323ab4cc8d2a2ae4cf8a
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
Gaius Shaver, 1992 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, Arctic LTER 1991.. 10.6073/pasta/be6a74da00e45ad4b66948c384a1379e
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included in this file are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation
Gaius Shaver, 2004 Daily weather data file for Arctic Tundra LTER site at Toolik Lake, 2003.. 10.6073/pasta/66b5dd02cc13e88ecb9c839e876ea53c
Daily weather data file for Arctic Tundra LTER site at Toolik Lake. Included are daily averages and/or maximums and minimums of air, soil and lake temperature, wind speed, vapor pressure, and sum of global radiation and unfrozen precipitation recorded near Toolik Lake.
AON Reflectance
Abstract
Gaius Shaver, 2012 Reflectance spectra of vegetation near Imnavait Creek, AK from the 2008-2010 growing seasons.. 10.6073/pasta/d5648e8f6376c35fd86f4bd2bd76e4ba
A spectrophotometer was used to scan the canopy vegetation at four sites near Imnavait Creek each year from 2008 - 2010 by Toolik Lake LTER, Alaska. Reflectance spectra from 310-1130 nm are presented here with information relating the date and site of the scan.
Gaius Shaver, 2012 Vegetation indices calculated from canopy reflectance spectra at four sites along Imnavait Creek, AK during the 2008-2010 growing seasons.. 10.6073/pasta/bfa61daf6eeb155376a029cef3f79d84
A spectrophotometer was used to scan the canopy vegetation at four sites along Imnavait Creek in the Kuparuk Watershed near Toolik Lake LTER, Alaska. The resulting reflectance spectra were used to calculate average vegetation indices for each site and collection day.
Streams Metabolism
Abstract
Michael Kendrick, Alex Huryn, 2013 Chamber Metabolism 2011-2012 Kuparuk River near Toolik Field Station Alaska.. 10.6073/pasta/34232c5216fc1d7e9ef1f1156f873263
Dissolved oxygen was measured in sealed chambers on representative river rocks periodically throughout the 2011 and 2012 open water season in the Kuparuk River. These data provide information on gross primary production and respiration from representative river rocks taken from 3 experimental reaches in the Kuparuk.
William "Breck" Bowden, 2019 Kuparuk River Whole Stream Metabolism Arctic LTER, Toolik Field Station Alaska 2012-2017. 10.6073/pasta/cd383e684fb53d1b1d36712720b31c32
The Kuparuk River has been the central research location on the impact of added phosphorus to arctic streams. Additions of phosphorus occred since 1983. Today, 4 specific reaches show certain characteristics based on the years that they recieved fertilization. Whole Stream Metabolism is a way to quantify primary production of this stream system. Calculations were done using dissolved oxygen, discharge, stage, light and temperature measured by sondes and other equipment strategically deployed in the field at locations to quantify each of the unique stream reaches.
Terrestrial Invertebrates
Abstract
Amanda Koltz, 2018 Effects of experimentally altered wolf spider densities and warming on soil microarthropods, litter decomposition, litter N, and soil nutrients near Toolik Field Station, AK in summer 2012 . 10.6073/pasta/d1fb3658f397c837b1ac49c42c2bdff7
Predators can disproportionately impact the structure and function of ecosystems relative to their biomass. These effects may be exacerbated under warming in ecosystems like the Arctic, where the number and diversity of predators are low and small shifts in community interactions can alter carbon cycle feedbacks. Here we show that warming alters the effects of wolf spiders, a dominant tundra predator, on belowground litter decomposition and nutrient dynamics.
Thermokarst Streams
Abstract
William "Breck" Bowden, 2014 ARCSS/TK water chemistry and epilithon characterization from the Noatak National Preserve, Kelly River region (2010) and Feniak Lake region (2011).. 10.6073/pasta/39ed7afdfd1ad36019bd3b02c64d1bd1
These data are from two remote field campaigns in the Noatak National Preserve. Various thermokarst features and their receiving streams were sampled and characterized. A suite of water chemistry (nutrients, major anions and cations, total suspended sediment) and benthic variables (particulate carbon, nitrogen and phosphorus, and chlorophyll-a) were measured at 6 major sites (2 in 2010 and 4 in 2011). There were additional sites sampled for water chemistry above and below thermokarst features in 2011.
William "Breck" Bowden, 2014 ARCSS/TK water chemistry and total suspended sediment data from I-Minus2 and Toolik River thermokarsts and receiving streams, near Toolik Field Station, Alaska, summers 2006-2013.. 10.6073/pasta/36446317e7682f1b03c0f7def5b16fcc
Water samples were taken at 5 locations at both I-Minus2 and Toolik River thermokarst sites (10 sampling locations total). A combination of ISCO and manual grab samples were taken depending on the sampling location and year.
William "Breck" Bowden, 2014 ARCSS/TK stream dissolved organic carbon biodegradability (2011).. 10.6073/pasta/2057860f44b75e4291072a996f2b99b1
The (ARCSSTK) did extensive research during 2009-2011 field seasons in Arctic Alaska. The objective of this data set was to measure the quantity and biodegradability of DOC from headwater streams and rivers across three geographic regions and across four natural ‘treatments’ (reference; thermokarst-; burned-, and thermokarst + burned-impacted streams) to evaluate which factors most strongly influence DOC quantity and biodegradablity at a watershed scale.
William "Breck" Bowden, 2014 ARCSSTK benthic nutrients and chloropyll-a. 10.6073/pasta/5905edbd9bca76c1b25542d9a661d1a2
The (ARCSSTK) did extensive research during 2009-2011 field seasons in Arctic Alaska. Specifically, the ARCSSTK goal Streams goal was to quantify the relative influences of thermokarst inputs on the biogeochemical structure and function of receiving streams. Throughout the project, samples were collected from Benthic Rock Scrubs and measured for cholorophyll-a and particulate carbon (C), nitrogen (N) and phosphorus (P).
William "Breck" Bowden, 2014 ARCSSTK WSM. 10.6073/pasta/11eb4e1ce9dfb4413cb869e5fc11472f
The (ARCSSTK) did extensive research during 2009-2011 field seasons in Arctic Alaska. Specifically, the ARCSSTK goal Streams goal was to quantify the relative influences of thermokarst inputs on the biogeochemical structure and function of receiving streams. Whole Stream Metabolism was calculated using dissolved oxygen, discharge, stage, and temperature measured by sondes deployed in the field.
Weather Wet Sedge
Abstract
James A Laundre, 2022 Hourly weather data from the Arctic LTER Wet Sedge Inlet Experimental plots from 1994 to present, Toolik Field Station, North Slope, Alaska.. 10.6073/pasta/87bb699469101659867f951b69219c37
Hourly weather data from the Arctic Tundra LTER wet sedge experimental site at Toolik Lake. The following parameters are measured every minute and averaged every hour: control plot air temperature and relative humidity at 3 meters and greenhouse plot air temperature and relative humidity at 1 meters (inside the greenhouse).
James A Laundre, Gaius Shaver, 2022 Soil temperature data collected from the Arctic LTER wet sedge experimental site Toolik Field Station North Slope, Alaska from 1994 to 2020. 10.6073/pasta/b9042efc729ffb531bdb3974cb6d866c
Soil temperature data collected every 4 hours from a wet sedge site at the Arctic Tundra LTER site at Toolik Lake. Temperatures are measured every 3 minutes and averaged every 4 hours in control, nitrogen alone, phosphorus alone, nitrogen and phosphorus, and greenhouse experimental plots soil temperatures.
Landscape Interactions Watershed Thaw Survey
Abstract
George Kling, 2007 Tussock watershed thaw depth survey summary for 1990 to present, Arctic Long-Term Ecological Research (LTER), Toolik Research Station, Alaska. . 10.6073/pasta/5ec809b760dd8cbc9e979941e29f70cc
Thaw depth was measured since 1990 using a steel probe in the Tussock watershed just south of Toolik Lake, Alaska, on a gentle slope dominated by moist, non-acidic tussock tundra. At least two surveys are conducted each summer, on 2 July and on 11 August (plus or minus 1 day).
Streams Moss
Abstract
William "Breck" Bowden, 2020 Moss point transect data for the Kuparuk River near Toolik Field Station, Alaska 1993-current.. 10.6073/pasta/be64e293c977546d3732b511ed348e81
This file contains the consolidated data for percent cover of dominant bryophytes and other easily identifiable macro-algae in the experimental reaches of the Kuparuk River beginning in 1993 and updated annually. In some years percent cover was recorded more than one time per season. In all years percent cover was recorded in riffle habitats and in some (early) years percent cover was recorded for pool habitats. Moss point transects have been done on the Kuparuk since 1993.
Terrestrial Soil Microfuna and Microflora
Abstract
John Moore, 2008 Belowground foodweb biomass from moist acidic tundra and dry heath tundra nutrient addition and herbivore exclusion plots (since 1996) sampled Summer 2006. 10.6073/pasta/635d263dd947a1ea64f8deb284945e18
Biomass of belowground community groups (bacteria, fungi, protozoa, nematodes, rotifers, tardigrades) determined for organic soils in moist acidic tundra and dry heath tundra.
Thermokarst Soil
Abstract
Benjamin Crosby, 2013 Water-level and subsurface water temperature at sensor from the Toolik River Thermokarst, 2010-2013. 10.6073/pasta/f76e4598a1b0bd7d269cc1596a07ee81
Data were collected to investigate if formation of gully thermokarst (TK) results in lowering of the water table and more rapid evacuation of water from above the frost table. Data were collected from 24 shallow screened wells. 2 replicate rows of 4 wells were located at: (a) a hillslope (HS) ~120m away from the gully TK, (b) perpendicular to the gully TK (TK) and (c) perpendicular to an unimpacted water track (WT) upstream of the gully TK. Note that water levels are the distance below the ground surface and may have organic/peat layers of different thicknesses.
Michelle Mack, Edward Schuur, 2013 Surface soil characteristics for six thermokarst chronosequences near Toolik Field Station and Noatak National Preserve, Alaska. 10.6073/pasta/ad0c79140211e1f4db2509fded5653b8
Surface organic and mineral soil layers were sampled in retrogressive thaw slump disturbance scars and nearby undisturbed tundra to estmate the influence of this thermo-erosional--thermokarst--disturbance type on soil carbon (C) and nitrogen (N) pools. Within six independent sites, we identified multiple thaw slump scars and determined time after disturbance for each scar by (1) aging the population of tall deciduous shrubs rooted in the mineral soil and (2) by dating the basal layer of the re-accumulating soil organic matter.
Michael Gooseff, Sarah Godsey, 2012 Meteorological data near thermokarst sites around Toolik Lake Field Station, Summer 2009-Summer 2012. 10.6073/pasta/5089ebdcad8fefee800fe3aa60b2437b
GroMeteorological parameters were measured hourly adjacent to thermokarst features in the region around Toolik Field Station. Pressure, rainfall, wind speed and direction, solar radiation, air temperature and relative humidity were all measured at 1-3m above the ground surface with an Onset U30 weather station connected to all sensors.
Michael Gooseff, Sarah Godsey, 2012 Ground temperature at and near NE 14 thermokarst sites around Toolik Lake Field Station, Alaska, Summer 2009-Summer 2012. 10.6073/pasta/84046582477f7d660eaaf6526dc0ec46
Ground temperatures were measured hourly at ~20-50cm intervals below the ground surface inside and adjacent to thermokarst features in the region around Toolik Field Station. Ground temperatures were measured using Hobo thermistors. Temperatures at 0 and 20cm depths were measured directly in the ground whereas 40cm and deeper measurements were logged from dry wells installed in summer 2009. NE14_TS02dot02_temp is located in the old NE14 thermokarst, upslope.
Michael Gooseff, Sarah Godsey, 2012 Ground temperature at and near Toolik River thermokarst sites around Toolik Lake Field Station, Alaska, Summer 2009-Summer 2012. 10.6073/pasta/00c2958f88d1ccad92755882e54cdef6
Ground temperatures were measured hourly at ~20-50cm intervals below the ground surface inside and adjacent to thermokarst features in the region around Toolik Field Station. Ground temperatures were measured using Hobo thermistors. Temperatures at 0 and 20cm depths were measured directly in the ground whereas 40cm and deeper measurements were logged from dry wells installed in summer 2009. TRTK_GT01dot05_temp is located outside the TRTK thermokarst, midslope.
Michael Gooseff, Sarah Godsey, 2012 Ground temperature at and near I-Minus-2 thermokarst sites around Toolik Lake Field Station, Alaska, Summer 2009-Summer 2012. 10.6073/pasta/e46aa3731f4da34010d72745ba60a448
Ground temperatures were measured hourly at ~20-50cm intervals below the ground surface inside and adjacent to thermokarst features in the region around Toolik Field Station. Ground temperatures were measured using Hobo thermistors. Temperatures at 0 and 20cm depths were measured directly in the ground whereas 40cm and deeper measurements were logged from dry wells installed in summer 2009. IM2_GT01dot06_temp is located inside of the I-Minus-2 Gulley thermokarst, downslope.
Torre Jorgenson, 2013 Permafrost soil database with information on site, topography, geomorphology, hydrology, soil stratigraphy, soil carbon, ground ice isotopes, and vegetation at thermokarst features near Toolik and Noatak River, 2009-2013. 10.6073/pasta/6294610ce5738eb9c7e5d1ce13b54017
This database contains soil and permafrost stratigraphy associated with thermokarst features near Toolik Lake and the Noatak River collected by Torre Jorgenson and Andrew Balser during summers 2009-2011. The Access Database has main data tables (tbl_) for site (environmental), soil stratigraphy, soil physical data, soil chemical data, soil isotopes (ground ice), soil radiocarbon dates, topography and bathymetry, and vegetation cover.
Lakes Physical and Chemical Parameters
Abstract
Cody Johnson, 2012 Sediment primary productivity, respiration and productivity by irradiance curves from lakes near Toolik Field Station 2009 - 2010. 10.6073/pasta/79c8cff5e2edbe10ab42ab8164045c76
Dataset includes rates of benthic gross primary productivity (GPP) in mmol O2/m2/d by irrandiance (I) in uE/m2/s curves and benthic respiration rates in mmol/m2/d from lakes E-5, E-6, Toolik, Fog Lake 2, Horn, Perched and Luna during the summer of 2009-2010.
Cody Johnson, George Kling, Anne Giblin, 2011 Sedimentation rate, concentration of macronutrients and flux for NE14, Toolik, Dimple, Perched during Summer 2009.. 10.6073/pasta/e2db8161be27bdbdcd398b0290f63f39
We measured the flux of bulk material and major macronutrients (carbon, nitrogen and phosphorus) from the water column to the benthos in four separate lakes during the summer of 2009. The lakes were chosen to investigate the impacts of disturbance on lake sedimentation. Two of the lakes, Dimple and Perched, were within catchments that were burned by the 2007 Anaktuvuk River wildfire. Two of the lakes, NE-14 and Perched, were receiving elevated sediment loads from thermokarst failures on their shorelines, and Toolik Lake was used as a reference lake.
Modeling Data
Abstract
Edward Rastetter, 2005 The role of down-slope water and nutrient fluxes in the response of Arctic hill slopes to climate change, output from MBLGEMIII for typical tussock-tundra hill slope near Toolik Field Station, Alaska.. 10.6073/pasta/8422a982c7303e0291b83bf4b7568312
Output data sets of the MBL-GEM III model for a typical tussock-tundra hill slope. The model is described in two papers:
Le Dizès, S., Kwiatkowski B.L., Rastetter E.B., Hope A., Hobbie J.E., Stow D., Daeschner S., 2003 Modelling biogeochemical responses of tundra ecosystems to temporal and spatial variations in climate in the Kuparuk River Basin (Alaska), Journal of Geophysical Research Vol. 108 No. D2 10.1029/2001JD000960.
Edward Rastetter, 2001 Modeling biogeochemical responses of tundra ecosystems to temporal and spatial variations in climate in the Kuparuk River Basin , Alaska, 1921 to 2100.. 10.6073/pasta/2148914590223c917bffb199ef5fdde5
Output data set of the MBL-GEM III model run for tussock tundra in the Kuparuk River Basin, Alaska, described in detail in Le Dizès, S., B. L. Kwiatkowski, E. B. Rastetter, A. Hope, J. E. Hobbie, D. Stow, and S. Daeschner, Modeling biogeochemical responses of tundra ecosystems to temporal and spatial variations in climate in the Kuparuk River Basin (Alaska), J. Geophys. Res., 108(D2), 8165, doi:10.1029/2001JD000960, 2003.
Yueyang Jiang, 2016 Long-term changes in tundra carbon balance following wildfire, climate change and potential nutrient addition, a modeling analysis.. 10.6073/pasta/3c28308d774de3b01a416bd4cb597067
A study investigating the mechanisms that control long-term response of tussock tundra to fire and to increases in air temperature, CO2, nitrogen deposition and phosphorus weathering. The MBL MEL was used to simulate the recovery of three types of tussock tundra, unburned, moderately burned, and severely burned in response to changes in climate and nutrient additions. The simulations indicate that the recovery of nutrients lost during wildfire is difficult under a warming climate because warming increases nutrient cycles and subsequently leaching within the ecosystem.
Edward Rastetter, Bonnie Kwiatkowski, David Kicklighter, Audrey Baker Potkin, Helene Genet, Jesse Nippert, Kim O'Keefe, Steven Perakis, Stephen Porder, Sarah Roley, Roger Ruess, Jonathan Thomson, William Wieder, Kevin Wilcox, Ruth Yanai, 2022 Steady state carbon, nitrogen, phosphorus, and water budgets for twelve mature ecosystems ranging from prairie to forest and from the arctic to the tropics. 10.6073/pasta/b737b5f0855aa7afeda68764e77aec2a
We use the Multiple Element Limitation (MEL) model to examine the responses of twelve ecosystems - from the arctic to the tropics and from grasslands to forests - to elevated carbon dioxide (CO2), warming, and 20% decreases or increases in annual precipitation.
Edward Rastetter, Bonnie Kwiatkowski, David Kicklighter, Audrey Baker Potkin, Helene Genet, Jesse Nippert, Kim O'Keefe, Steven Perakis, Stephen Porder, Sarah Roley, Roger Ruess, Jonathan Thomson, William Wieder, Kevin Wilcox, Ruth Yanai, 2022 Ecosystem responses to changes in climate and carbon dioxide in twelve mature ecosystems ranging from prairie to forest and from the arctic to the tropics. 10.6073/pasta/7ca56dfbe6c9bedf5126e9ff7e66f28d
We use the Multiple Element Limitation (MEL) model to examine the responses of twelve ecosystems - from the arctic to the tropics and from grasslands to forests - to elevated carbon dioxide (CO2), warming, and 20% decreases or increases in annual precipitation.
Edward Rastetter, Kevin Griffin, Laura Gough, Jennie McLaren, Natalie Boelman, 2021 Modeling the effect of explicit vs implicit representaton of grazing on ecosystem carbon and nitrogen cycling in response to elevated carbon dioxide and warming in arctic tussock tundra, Alaska - Dataset B. 10.6073/pasta/5f95c98e963409a447322b205bbc7f62
We use a simple model of coupled carbon and nitrogen cycles in terrestrial ecosystems to examine how explicitly representing grazers versus having grazer effects implicitly aggregated in with other biogeochemical processes in the model alters predicted responses to elevated carbon dioxide and warming. The aggregated approach can affect model predictions because grazer-mediated processes can respond differently to changes in climate from the processes with which they are typically aggregated.
Edward Rastetter, Kevin Griffin, Laura Gough, Jennie McLaren, Natalie Boelman, 2021 Modeling the effect of explicit vs implicit representaton of grazing on ecosystem carbon and nitrogen cycling in response to elevated carbon dioxide and warming in arctic tussock tundra, Alaska - Dataset A. 10.6073/pasta/e8f2890db0a7a64a76580cadb47b472c
We use a simple model of coupled carbon and nitrogen cycles in terrestrial ecosystems to examine how explicitly representing grazers versus having grazer effects implicitly aggregated in with other biogeochemical processes in the model alters predicted responses to elevated carbon dioxide and warming. The aggregated approach can affect model predictions because grazer-mediated processes can respond differently to changes in climate from the processes with which they are typically aggregated.
Edward Rastetter, Kevin Griffin, Bonnie Kwiatkowski, George Kling, 2022 Model Simulations of The Effects of Shifts in High-frequency Weather Variability (No Long-term Weather Trend) Control Carbon Loss from Land to the Atmosphere, Toolik Lake, Alaska, 2022-2122. 10.6073/pasta/a946904960bb11f44915b80fb4fc5981
Climate change is increasing extreme weather events, but effects on high-frequency weather variability and the resultant impacts on ecosystem function are poorly understood. We assessed ecosystem responses of arctic tundra to changes in day-to-day weather variability using a biogeochemical model and stochastic simulations of daily temperature, precipitation, and light. Changes in weather variability altered ecosystem carbon, nitrogen, and phosphorus stocks and cycling rates.
Streams Temperature Discharge
Abstract
William "Breck" Bowden, 2020 Kuparuk River stream temperature and discharge measured each summer, Dalton Road crossing, Arctic LTER Toolik Field Staion, Alaska 1978-2019. 10.6073/pasta/b407edbe788d9be27662009e1be8331b
Stream temperature and discharge measured each summer for several streams in the Toolik area. In many years, temperature and stream height were recorded manually each day. In recent years, dataloggers have measured stream temperature and stream height at regular intervals. The Kuparuk River data was maintained by Doug Kane and the Water and Environmental Research Center at UAF through 2017 (http://ine.uaf.edu/werc/projects/NorthSlope/upper_kuparuk/upper_kuparuk....).
William "Breck" Bowden, 2020 Stream temperature and discharge measured each summer for Oksrukuyik Creek at Dalton Road crossing, Arctic LTER, Toolik Field Station, Alaska, 1989-2019. 10.6073/pasta/93999a64cc4650828f633e2ab5b237fa
Oksrukuyik Creek stage height and calculated discharge for the summer of 1989 to present. Stream temperature and discharge measured each summer for several streams in the Toolik area. Stream height is converted into stream discharge based on a rating curve calculated from manual discharge measurements throughout the season. The principal investigator in charge of the temperature and discharge measurements is Dr. Breck Bowden.
Note: This file combines the previous individual yearly files.
William "Breck" Bowden, 2020 Roche Moutonnee Creek and Trevor Creek stream temperature and discharge measured each summer, Arctic LTER Toolik Field Station, Alaska, 2015-2019. 10.6073/pasta/241545f73a73e9d8b7b615e21e5cea2c
Stream temperature and discharge measured each summer for Roche Moutonnee Creek and Trevor Creek. Dataloggers measured stream temperature and stream height at regular intervals. Stream height is converted into stream discharge based on a rating curve calculated from manual discharge measurements throughout the season. The principal investigator in charge of the temperature and discharge measurements is Dr. Breck Bowden.
Terrestrial Reflectance
Abstract
Gaius Shaver, Laura Gough, 2022 Vegetation indices calculated from reflectance spectra collected at LTER plots at Toolik Lake, Alaska during the 2007-2019 growing seasons.. 10.6073/pasta/c7f5923cc5b929ccdf0d61f461147b3d
Vegetation indices calculated from reflectance spectra collected at Arctic LTER experimental plots at Toolik Lake, Alaska during the 2007-2019 growing seasons.
Terrestrial Precipitation Chemistry
Abstract
Gaius Shaver, 2006 Bulk precipitation collected during summer months on a per rain event basis at Toolik Field Station, North Slope of Alaska, Arctic LTER 1988 to 2007.. 10.6073/pasta/410d11b9f95caf846e5fb6959145a4de
Bulk precipitation was collected during summer months (June, July and August) on a per rain event basis at the University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 37' 42"N, 149 degrees 35' 46"W). Analysis of pH, NH4-N and phosphorus were performed at the field station. NO3-N were frozen and analyzed in Woods Hole, MA
Gaius Shaver, 2006 Precipitation cations and anions for June, July and August from a wet/dry precipitation, University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 37' 42"N, 149 degrees 35' 46"W), Arctic LTER 1989 to 2003. 10.6073/pasta/d59fb55e6934f4f90bd652399a2e76f8
Precipitation, collected from a wet/dry precipitation collector located near University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 37' 42"N, 149 degrees 35' 46"W) was sent out for standardized EPA rain water analysis. Nutrient chemistry was also run on a sub sample at the field station.
Terrestrial
Abstract
Laura Gough, Sarah Hobbie, 2005 Percent carbon and percent nitrogen of above ground plant and belowground stem biomass samples from experimental plots in moist acidic and moist non-acidic tundra, 2001, Arctic LTER, Toolik Lake, Alaska.. 10.6073/pasta/75de62f9de5e22e63a76c8b48b99cf2b
Percent carbon and percent nitrogen were measured from above ground plant and belowground stem biomass samples from experimental plots in moist acidic and moist non-acidic tundra. Biomass data are in 2001lgshttbm.dat.
Terrestrial Soil Properties
Abstract
John Moore, 2013 Extracellular enzyme activities in soils from Arctic LTER moist acidic tundra nutrient addition plots, Toolik Field Station, Alaska, sampled July 2011.. 10.6073/pasta/ea03e558865471f1daf5b15bbce582c2
Soil samples were collected from control, and N+P plots from within a set of treatments in Arctic LTER Moist Acidic Tundra plots established in 1989 and in 2006 . At the time of sampling the soil was separated into organic horizon, organic/mineral interface, and the upper 5cm of the mineral soil. In the lab the potential activities of seven hydrolytic enzymes was determined using fluorometric techniques (Saiya-Cork et al. 2002) modified following Steinweg et al(.2012).
Jennie DeMarco, Michelle Mack, 2013 Mass, C, N, and lignin from litter decomposed across a shrub gradient and with snow manipulations near Toolik Field Station between 2003 and 2009.. 10.6073/pasta/badba3735996e3de4cd02ee4bd1cfd5c
In arctic tundra near Toolik Lake, Alaska, we incubated a common substrate in a snow addition experiment to test whether snow accumulation around arctic deciduous shrubs altered the environment enough to increase litter decomposition rates. We compared the influence of litter quality on the rate of litter and N loss by decomposing litter from four different plant functional types in a common site. We used aboveground net primary production values and estimated k values from our decomposition experiments to calculate community-weighted mass loss for each site.
Jennie DeMarco, Michelle Mack, 2009 Net nitrogen mineralization from shrub gradient and snow manipulations, near Toolik field station, collect in the summer of 2006 and winter of 2006-2007. 10.6073/pasta/d63fe4fe5d2725aaa8732f1ae6548028
In arctic tundra, near Toolik Lake, Alaska, we quantified net N-mineralization rates under ambient and manipulated snow treatments at three different plant communities that varied in abundance and height of deciduous shrubs.
Gaius Shaver, 2022 Late season thaw depth measured in the Arctic Long Term Ecological Research (ARC LTER) moist acidic tussock experimental plots at Toolik Field station, Alaska Arctic 1993 to 2021. 10.6073/pasta/e24f9ed96718c7a6d020c1be6ae5853f
Late season thaw depth was measured in the Arctic Long Term Ecological Research (ARC LTER) experimental plots (1981 Moist Acidic Tussock, 1989 Moist Acidic Tussock, 2006 Low Fertilization Moist Acidic Tussock, 1989 Moist Non-acidic Tussock, 1989 Moist Non-acidic Non-tussock and 1989 Wet Sedge tundra) at Toolik Lake, Alaska using a steel thaw probe. Note: for 2017-2018 only 1989 Moist Non-Acidic Tussock Tundra and 2006 Low fertilization Moist Acidic Tussock Tundra were measured. For other sites it has become difficult to distinguish rocks from frozen soil with a steel thaw probe.
Gaius Shaver, 2006 Nitrogen mineralization was determined on Arctic LTERToolik and Sag River tussock tundra using the buried bag method, Toolik Field Station, Alaska, Arctic LTER 1989-2013.. 10.6073/pasta/79e01a508bb9021e265eec2a8201b2f9
Nitrogen mineralization was determined on LTER and Sag River tussock tundra using the buried bag method. Yearly bags have been deployed every August since 1990.
Terrestrial Trace Gases
Abstract
Gaius Shaver, 2010 Leaf area, biomass, carbon and nitrogen content by species for harvests taken as part of the ITEX flux survey.. 10.6073/pasta/74407ca602bf8944e5152f7a74203ac4
Leaf area, biomass, foliar carbon and nitrogen by species for destructive vegetation harvests. Plots were located in the Toolik Lake LTER fertilization experiment in Alaska; at Imnavait Creek, Alaska; at Paddus, Latnjajaure and the Stepps site near Abisko in northern Sweden; and at various sites in Adventdalen, Svalbard, in Zackenberg valley, Northeast Greenland, and at BEO near Barrow, Alaska. Harvests were taken during the growing seasons 2003 to 2009.
Gaius Shaver, 2010 Best fit parameters describing net CO2 flux light response curves measured during the ITEX CO2 flux survey 2003-2009.. 10.6073/pasta/c7a1ddd4b19dcbfa7c46175b89881750
Ecosystem CO2 flux light response curves were measured on 1m x 1m plots ( some 0.3m x 0.3m plots in 2006 and some 0.7m x0.7m plots in 2009) across the arctic. This file contains the best fit parameters that describe these light response curves, together with corresponding NDVI data for each curve.
Gaius Shaver, 2010 NDVI, leaf area index and total foliar N of harvests taken during the ITEX flux survey. 10.6073/pasta/95095cb096b2e977e6bb8658b021c76e
Leaf area, biomass, foliar carbon and nitrogen by species for destructive vegetation harvests. Plots were located in the Toolik Lake LTER fertilization experiment in Alaska; at Imnavait Creek, Alaska; at Paddus, Latnjajaure and the Stepps site near Abisko in northern Sweden; and at various sites in Adventdalen, Svalbard, in Zackenberg valley, Northeast Greenland and at BEO near Barrow, Alaska. Harvests were taken during the growing seasons 2003 to 2009.
Gaius Shaver, 2010 ITEX circumarctic CO2 flux survey data from Toolik, Alaska; Abisko, Sweden; Svalbard, Norway; Zackenberg, Northeast Greenland; Anaktuvuk River Burn, Alaska and Barrow, Alaska 2003-2009.. 10.6073/pasta/7e6f56dfe5b6d1d6545a24c3bdd9505e
Ecosystem CO2 flux light response curves were measured on 1m x 1m plots across the arctic. This file contains the CO2 and H2O flux measurements and NDVI data for each plot. Survey plots were located in the Toolik Lake LTER fertilization experiment in Alaska; at Imnavait Creek, Alaska; at Paddus, Latnjajaure and the Stepps site near Abisko in northern Sweden; at various sites in Adventdalen, Svalbard; in the Zackenberg valley, Northeast Greenland; at BEO near Barrow, Alaska and at the Anaktuvuk River Burn in Alaska. Measurements were made during the growing seasons 2003 to 2009.
Gaius Shaver, 2012 Raw pin-hit data from 19 1m x 1m point frame plots sampled near the LTER Shrub plots at Toolik Field Station in AK the summer of 2012.. 10.6073/pasta/59cbf45a4bb4a1997bc18f02a1100a64
This dataset includes every pin-hit recorded from 19 1m x 1m point frame plots of tall Betula nana and Salix pulchra canopies sampled at the Toolik Field Station, AK the summer of 2012. Twenty-five evenly spaced holes within the plot were sampled for each point frame for which the height and species was recorded for each leaf, stem, or plant that intersected the pin when lowered perpendicular to the ground. Non-woody species were grouped into functional groups (e.g. forb, graminoid, moss) and not identified to species.
Gaius Shaver, 2013 Maximum canopy height from 14 flux canopy and 19 point frame plots sampled near the shrub LTER sites at Toolik Field Station, Alaska, summer 2012.. 10.6073/pasta/7b7fb8822b918e03c6803b6ba352894b
Maximum canopy height measurements for deciduous shrub canopies sampled for both 1m x 1mc hamber flux polots (n=14) and point frame plots (n=19) in the summer of 2012 near LTER shrub plots at Toolik Lake, AK. The canopies were dominated either by Salix pulchra or Betula nana species, and plot locations were preferentially selected for tall canopies (height > 75 cm). The methods for the chamber flux and point frames are outlined here briefly, though the data from these measurements are contained in separate files.
Gaius Shaver, 2013 Individual chamber flux measurements from 14 flux whole-canopy shrub plots sampled near the shrub LTER sites at Toolik Field Station, Alaska, summer 2012.. 10.6073/pasta/4b5f0a6ac4cd14e233d7e7173fd40464
“Flux data” contains the CO2 and water flux data along with the corresponding diffuse light fraction at the time of measurement from the ITEX shrub canopy project taken at Toolik Lake, Alaska in 2012. Each record is a single LiCor flux measurement made with LiCor 6400 photosynthesis system, with associated average pressure, temperature, PAR, water vapor, and other data such as NDVI and LAI measurements taken with a DeltaT SunScan wand under both direct and diffuse light conditions.
Gaius Shaver, 2012 Summary of three different Leaf Area Index (LAI) methodologies of 19 1m x 1m point frame plots sampled near the LTER Shrub plots at Toolik Field Station in AK the summer of 2012.. 10.6073/pasta/d820beac421a90a6ea65b3b589537f66
Summary of three methods used to estimate the Leaf Area Index (LAI) of 19 1m x 1m plots sampled with a point frame near the LTER Shrub plots at the Toolik Field Station in AK the summer of 2012. The methods used were: (1) exponential relationship between LAI and NDVI as measured above the canopy with a Unispec spetroradiometer; (2) Delta-T SunScan canopy analyzer held at 5 cm above the ground under both direct and diffuse light conditions; (3) pin-drop point frame tequnique. Where values have been averaged (such as for the NDVI and SunScan measurements), the standard deviation is given.
Gaius Shaver, 2012 Leaf Area Index every 15 cm of 1m x 1m chamber flux and point frame plots and sites where dataloggers monitored PAR above, within and below S. pulchra and B. nana canopies during the growing season at the Toolik Field Station in AK, Summer 2012.. 10.6073/pasta/627698983259d6963a6083d5251723cc
Leaf area index (LAI) measurements were taken with the Delta-T SunScan wand every 15 cm from the ground to above the canopy under both direct and diffuse light. conditions The data includes all outputs from the SunScan wand: time of measurement, transmitted light, spread of PAR sensors, beam fraction, and zenith angle.
Gaius Shaver, 2013 Percent species cover from 14 flux canopy and 19 point frame 1m x 1m plots sampled near the shrub LTER sites at Toolik Field Station, Alaska, summer 2012.. 10.6073/pasta/cd9516d28ef5f7931ab108de3d5f7384
Total and individual subsample species percent cover data for all plots where flux or point frame measurements were made in 2012 IVO the LTER Shrub vegetation plots at Toolik Field Station. All plots sampled were dominated either by B. nana or S. pulchra canopies. Cover estimates were made for the five most dominate functional groups using a 1m x 1m grid with 20cm2 blocks with each square representing four percent of the total area. Percentages represent absolute cover so do not sum to 100%.
Gaius Shaver, 2012 A/Ci curve parameters measured from shoots harvested at three levels in the canopy from 19 1m x 1m plots dominated by S. pulchra and B. nana shrubs near LTER Shrub plots at Toolik Field Station, AK the summer of 2012.. 10.6073/pasta/1f1df6b91414fd96c0c4e0aa9933f43b
A/Ci curve parameters and modeled carboxylation, electron transport, and triose-phosphate utilization efficiency rates from shoots clipped from low, mid, and the top of tall, shrub canopies dominated either by Salix pulchra or Betula nana species. Six shoots were harvested from each 1m x 1m plot, two from each level in the canopy. These plots were located near the LTER shrub plots at the Toolik Field Staion, AK for point frame measurements, and all measurements took place the summer of 2012.
Gaius Shaver, 2013 Summary of soil temperature, moisture, and thaw depth for 14 chamber flux measurements sampled near LTER shrub sites at Toolik Field Station, Alaska, summer 2012.. 10.6073/pasta/7ccf390e6fe4824e93b7a2b844605a40
Soil temperature at 5cm and 10cm depth [°C], volumetric water content (VWC) [%] and depth of thaw [cm] for 14 shrub canopy flux plots measured in vicinity of the Toolik Field Station, AK in 2012.
Gaius Shaver, 2012 Light response curves measured from shoots harvested at three levels in the canopy from 19 1m x 1m plots dominated by S. pulchra or B. nana shrubs near LTER Shrub plots at Toolik Field Station, AK the summer of 2012.. 10.6073/pasta/427415da725d34c28540d03683f04900
This dataset contains light response curves and modeled light curve parameters from shoots clipped from low, mid, and the top parts of tall, shrub canopies dominated either by Salix pulchra or Betula nana. Six shoots were harvested from each 1m x 1m plot, two from each level in the canopy in plots located near the LTER shrub plots at Toolik Field Station, AK the summer of 2012. The species harvested were chosen based on the species present in each plot, thus the species from each segment of the canopy may not be the same.
Gaius Shaver, 2012 Daily summaries of photosynthetically active radiation (PAR), relative humidity, and temperature data logged above, within, and below Betula nana and Salix pulchra shrub canopies during the summer of 2012 in vicinity of Toolik Lake, Alaska.. 10.6073/pasta/101237eb155ec6efe1be26807c1025ec
This file contains limited daily summaries of PAR, relative humidity, and temperature data monitored above, within, and below Betula nana and Salix pulchra shrub canopies at two locations near Toolik Lake, Alaska during the summer of 2012. The location of the PAR sensor and dataloggers were co-located with the LTER shrub plots (block 1 and 2), also used for the chamber flux and point frame measurements taken this same year.
Gaius Shaver, 2013 Summary of measured and modeled light curve parameters for diffuse, direct, and intermediate light curves for 14 whole-canopy 1mx1m plots sampled near the shrub LTER sites at Toolik Field Station, Alaska, summer 2012.. 10.6073/pasta/4bc7067bbfad38c9368c522cf1bf633d
14 1m x 1m shrub plots were sampled the summer of 2012 under direct and diffuse light conditions. Light response curves were measured under each light condition for each plot using a Li-Cor 6400 to measure net ecosystem exchange (NEP); these measurements were modelled using a saturatingMichaelis-Menton formula.
Gaius Shaver, 2013 Total and diffuse photosynthetically active radiation (PAR) recorded by a beam fraction (BF3) sensor during the summer of 2012 in vicinity of Toolik Lake, Alaska.. 10.6073/pasta/e07cdf2782e0016405f9845e02ef5542
This file contains irradiance (PAR) and diffuse light data logged from a beam fraction (BF3) sensor near Toolik Lake, Alaska during the summer of 2012. The data comes from a compilation of automated datalogger readings as well as measurements taken during the field season in conjunction with the Delta-T SunScan wand to measure PAR in tall shrub canopies dominated by Betula nana or Salix pulchra species. The sensor was leveled and mounted to a 2m tripod in each location, and programmed to record instantaneous readings in 30 second to 5 minute intervals.
Gaius Shaver, 2012 Plot descriptions and location data from datalogger, 1m x 1m chamber flux and point frame plots sampled near Toolik Field Station in Alaska the summer of 2012.. 10.6073/pasta/926e2979102d5d34c193582969a97bca
"2012_GS_PFandCH_GPS" contains GPS locations of all datalogger, 1m x 1m chamber flux and point frame plots sampled IVO Toolik Field Station in Alaska during the summer of 2012. The sorting variables (YEAR, DATE, SITE, GROUP, PLOT, TREAT, PLOT SIZE) are identical to those in other files with data collected that season. The main purpose of this file is for reference and as an aid in interpretation of data analyses and among-site comparisons.
Gaius Shaver, 2012 Photosynthetically Active Radiation data taken with the Delta-T SunScan wand every 15 cm of 1m x 1m chamber flux and point frame plots as well as four remotely monitored canopies at the Toolik Field Station in AK, Summer 2012.. 10.6073/pasta/d82658b4361c7bad120af2da74885ce4
Within-canopy PAR was measured with a Delta-T SunScan wand every 15 cm from the ground to above the canopy under both direct and diffuse light. The data includes all outputs from the SunScan wand: time of measurement, spread of PAR sensors, total irradiance, total diffuse light, and individual outputs of 64-PAR sensors on the SunScan wand. These measurements were taken for 1m x 1m chamber flux (n=14) and point frame (n=19) plots as well as sites four montitored remotely by PAR sensors located above, within, and below shrub canopies.
Gaius Shaver, 2012 Harvest data including the shoot leaf area index, position in the canopy, and shoot and plant tissue area, count and mass for each shoot harvested at three levels in the canopy from 19 1m x 1m plots near LTER Shrub plots, Toolik Field Station, AK 2012.. 10.6073/pasta/11f24bddf5278229f37ea5fecf972415
Leaf and plant tissue area and mass from shoots harvested from 19 1m x 1m point frame plots near Toolik Field Station, AK during the summer of 2012. Six shoots were harvested from each plot, two from each canopy layer: upper, middle, and low. Each shoot came from a different plant, and the species selected was based on the species dominant in that canopy layer. The leaf area and mass were used to correct A/Ci and light response curves taken on each shoot [data published separately].
Gaius Shaver, 2012 Photosynthetically active radiation (PAR) measurements, relative humidity, and temperature data logged every five minutes from Betula nana and Salix pulchra shrub canopies, summer of 2012 in vicinity of Toolik Lake, Alaska.. 10.6073/pasta/c87015fc3a8f7266cd47968a5a6db76a
This file contains PAR , relative humidity, and temperature data logged every five minutes from within, below, and above Betula nana and Salix pulchra shrub canopies at two locations near Toolik Lake, Alaska during the summer of 2012. The location of the PAR sensor and dataloggers were co-located with the LTER shrub plots (block 1 and 2), also used for the chamber flux and point frame measurements taken this same year.
Joshua Schimel, Knute Nadelhoffer, Gaius Shaver, Anne Giblin, Edward Rastetter, 1993 Methane and carbon dioxide emissions were monitored in control, greenhouse, and nitrogen and phosphorus fertilized plots of three different plant communities, Toolik Field Station, North Slope Alaska, Arctic LTER 1991.. 10.6073/pasta/09df4ac1e2f3de2532677246b804e840
Methane and carbon dioxide emissions were monitored in control, greenhouse, and nitrogen and phosphorus fertilized plots of three different plant communities.
Werner Eugster, George Kling, James A Laundre, 2020 Climate data from Arctic LTER Toolik Inlet Wet Sedge site, Toolik Field Station, Alaska 2012 to 2018. . 10.6073/pasta/dddeb05b2806e2f5788fadd6fc590ef1
Two Figaro TGS 2600 sensors were installed at the Toolik Wet Sedge site in late June 2012 to 2018.
Fire in the Arctic Landscape
Abstract
Adrian V Rocha, 2021 Comparison of vole-grazed and ungrazed Eriophorum vaginatum tussock biomass at the 2007 Anaktuvuk River fire scar in 2019. 10.6073/pasta/6b2e708573a8e2a567be975794d7e657
This file contains biomass measurements from vole-grazed and ungrazed Eriophorum vaginatum tussocks taken from the 2007 Anaktuvuk River Fire scar in 2019. Rodent-grazed and ungrazed tussocks were harvested to assess the impact voles have on biomass. Eighteen grazed tussocks and seven ungrazed tussocks were harvested and taken back to the lab. Ungrazed tussocks were subsampled to make seperation faster. Eight additional ungrzed tussocks were measured in the field and biomass estimates were made using allometry equations based on diameter.
Photochemistry
Abstract
George Kling, Rose Cory, 2014 Biogeochemistry data set for NSF Arctic Photochemistry project on the North Slope of Alaska.. 10.6073/pasta/22a3a3fc2dc74b7aabe8a10ab9061cf0
Data file describing the biogeochemistry of samples collected at various sites near Toolik Lake on the North Slope of Alaska. Sample site descriptors include a unique assigned number (sortchem), site, date, time, depth, and category (level of thermokarst disturbance). Physical measures collected in the field include temperature, electrical conductivity, and pH.
Thermokarst
Abstract
William "Breck" Bowden, 2014 Physical site characteristics for the ARCSS/TK stream dissolved organic carbon biodegradability (2011) data set.. 10.6073/pasta/251cd2feee2adcab246208e77abd5985
The (ARCSSTK) did extensive research during 2009-2011 field seasons in Arctic Alaska. The objective of this data set was to measure the quantity and biodegradability of DOC from headwater streams and rivers across three geographic regions and across four natural ‘treatments’ (reference; thermokarst-; burned-, and thermokarst + burned-impacted streams) to evaluate which factors most strongly influence DOC quantity and biodegradablity at a watershed scale. This table provides physical site characteristics for the locations sampled for stream water biodegradability.
CSV
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