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.

Abstract: 

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.

Project Keywords: 

Data set ID: 

1428

EML revision ID: 

9
Published on EDI/LTER Data Portal

Citation Suggestion: 

Shaver, G. 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. Environmental Data Initiative. http://dx.doi.org/10.6073/pasta/79e01a508bb9021e265eec2a8201b2f9
People
Dates

Date Range: 

Thursday, August 15, 1996 to Friday, August 18, 2006

Publication Date: 

Sunday, January 1, 2006

Methods: 

Paired cores (within 15 cm of each other and 5.95cm diameter) of moss dominated inter-tussock were taken from Tussock tundra in the Arctic LTER site near Toolik Lake AK and in tussock tundra near the Sag River DOT maintenance Camp 25 miles Northeast of Toolik. Core length was measured in the field. Live plant material and mineral soil were removed. One core was placed in a polyethylene bag, inserted back in the hole, covered with moss, and flagged. Cores were incubated one year. The other core was taken back to lab for analysis. This core was used as an initial for the bagged core. For NH4-N and NO3-N extractions 100 mls of KCl (2 N KCl) is added to about 20 grams wet weight of homogenized soil. For PO4-P 100 mls of 0.025 N HCl was used for extraction. KCl extracts were shaken for 4 hours while HCl extracts were shaken for only 5 minutes. All extracts were immediately filtered through Whatman No. 42 filter paper. At the Tussock Site 2 bags per block and at the Sag 4 bags per plot were deployed with initials being collected at the same time. Cores were 5.95 cm in diameter and include organic soil only, i.e., no mineral or green, live plants. Notes: This file is complied from the individual year files. Each year's initials are complied in 1986_to_currentgsext.dat. Phosphorus in buried bags was not measured every year.

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