uid=ARC,o=EDI,dc=edirepository,dc=org all public read RF_2002_Soil Soil Respirations from experiemental plots near Toolik Lake, AK for 2002 Loretta Johnson
US
Knute Nadelhoffer
830 N. University, Department of Ecology and Evolutionary Biology Ann Arbor MI 48019-1048 US
George Kling University of Michigan
University of Michigan,Department of Ecology and Evolutionary Biology, 830 North University Ann Arbor MI 48109-1048 US
734 647 0894 gwk@umich.edu https://lsa.umich.edu/eeb/people/faculty/gwk.html https://orcid.org/0000-0002-6349-8227
Martin Sommerkorn
US
associated researcher
Edward Rastetter
7 M B L St. Woods Hole MA 02543 US
erastetter@mbl.edu https://www.mbl.edu/ecosystems/rastetter/ https://orcid.org/0000-0002-8620-5431 associated researcher
Kate O'Brien
US
associated researcher
Suzanne Randazzo
US
associated researcher
Kristi Judd
US
associated researcher
2004 English
Soil respiration of carbon dioxide, and methane in waters from wet sedge plots near Toolik Lake, AK during the summer of 2002.
soil respiration methane carbon dioxide LTER Controlled Vocabulary arctic soils moist acidic tundra wet sedge tundra Arctic LTER Vocabulary
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https://arc-lter.ecosystems.mbl.edu/rf2002soil LTER Moist Acidic Tussock Tundra: Arctic LTER Experimental Plots: Moist Acidic Tussock Tundra (MAT) Northeast corner block 1 near Toolik Field Station, North Slope, Alaska. -149.610000610352 -149.610000610352 68.624397277832 68.624397277832 750 750 meter LTER Wet Sedge Tundra Block 2: Arctic LTER Experimental Plots: Wet Sedge Tundra Block 2 Northeast corner near Toolik Field Station, North Slope, Alaska. -149.576995849609 -149.576995849609 68.647598266602 68.647598266602 719 719 meter 2002-06-05 2002-08-22 Entered metadata into new metadata form. Version 2: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 27Jan14 Arctic_LTER Information Manager Arctic Long Term Ecological Research
7 M B L St Woods Hole MA 02536 US
(508) 548-3705 arc_im@mbl.edu
Arctic Long Term Ecological Research
Plot location was chosen based on dominate vegetation type (T or W). The tussock tundra plots are located near the Moist Acidic Tundra plots characterized by Shaver and Chapin (1991). The wet sedge plots are located near the outlet of Toolik Lake; all plots have been used by the Arctic LTER project at Toolik Lake. In wet sedge tundra, three 1 m2-sized plots were positioned randomly in each of two treatments of block 2 of the LTER wet sedge scheme (outlet site), control and N+P-fertilized , respectively, in 2000. Paired control and fertilized plots were labelled with 14C and 15N at one of three different dates of the summer season 2001. In moist acidic tussock tundra six 1 m2 sized plots were positioned in three of the "X" (=extra") blocks of the LTER scheme, in 2001, inside an area extending 5 m from the boardwalks and, positioning plots so that similar area shares between tussocks and intertussock areas was achieved. In each of the three X blocks two 1m2-sized plots were established. The whole 5 m area of the X blocks extending from the board walks was divided into two halfs, each containing one of the 1m2 sized plots. One half was set aside as the control and the other half was designated to be fertilized. Fertilization with a Hoagland solution (see protocol) started in late summer 2001, and was repeated annually after that , early in the summer season. Paired control and fertilized plots were labelled with 14C and 15N of the summer season 2002; all three pairs were labelled as closely together in time as logistically possible. In each plot we installed two soil collars. On collection days we would place the collar cap on the collar, and wait 40 minutes to build up CO2 concentration in the headspace. We extracted 120 mL gas sample using a plastic 140 ml syringe with 6inch needle through collar septum. We transferred ~10 ml gas from original syringe into 20 ML nylon syringe to run on a Shimadzu Model 14A gas chromatograph with a flame ionization detector (FID) for CO2 and CH4 content. Shaver, G.R., and F.S. Chapin. 1991. Production - biomass relationships and elemental cycling in contrasting arctic vegetation types. Ecological Monographs 61(1): 1-31.
RF_2002_Soil_csv Soil Respirations from experiemental plots near Toolik Lake, AK for 2002 RF_2002_Soil.csv 17990 8a97d396a3099639fafd404f8595fa68 66d4618344f5b9b0de3ae3ae9d0f688f4098e186 1 0 \r\n column , " https://arc-lter.ecosystems.mbl.edu/sites/default/files/data/root_dynamics/RF_2002_Soil.csv Vegetation Vegetation Vegetation Type: t = tussock tundra | w = wet sedge string Vegetation Type: t = tussock tundra | w = wet sedge Treatment Treatment Treatment Type: c = control | f = fertilized string Treatment Type: c = control | f = fertilized Plot# Plot# Plot Number: 1 = plot 1 | 2 = plot 2 | 3 = plot 3 string Plot Number: 1 = plot 1 | 2 = plot 2 | 3 = plot 3 Soil Collar Soil Collar Soil Collar Identification: a = Soil Collar A | b = Soil Collar B string Soil Collar Identification: a = Soil Collar A | b = Soil Collar B Replicate Replicate Replicate Identification: r1 = 1st replicate | r2 = 2nd replicate | r3 = 3rd replicate | r4 = 4th replicate | r5 = 5th replicate | r6 = 6th replicate string Replicate Identification: r1 = 1st replicate | r2 = 2nd replicate | r3 = 3rd replicate | r4 = 4th replicate | r5 = 5th replicate | r6 = 6th replicate Date Date Date sampled date dd-mmm-yy . Missing or Not Measured Time Time Time sampled date hh:mm . Missing or Not Measured Category Category Type of sample: sr = Soil Respiration string Type of sample: sr = Soil Respiration Elev_m Elev_m Elevation of the sample site meter real . Missing or Not Measured Depth_m Depth_m Depth of the sample site meter real . Missing or Not Measured PCO2_uatm PCO2_uatm Partial Pressure of Carbon Dioxide microatmosphere real . Missing or Not Measured PCH4_uatm PCH4_uatm Partial Pressure of Methane microatmosphere real . Missing or Not Measured CO2_umol_L CO2_umol_L Concentration of Carbon Dioxide micromolePerLiter real . Missing or Not Measured CH4_umol_L CH4_umol_L Concentration of Methane micromolePerLiter real . Missing or Not Measured 312 RF_2002_Soil_excel Excel file with metadata and data sheets. Soil Respirations from experiemental plots near Toolik Lake, AK for 2002 RF_2002_Soil.xls 453120 c5472ac1db2748c946156e4823d74c6a 5a04018353ebd931f3ab142dd5081c10ebc58e90 application/vnd.ms-excel https://arc-lter.ecosystems.mbl.edu/sites/default/files/data/root_dynamics/RF_2002_Soil.xls document
1 microAtmosphere = 0.000001 atmospheres = 1013.25 millibars = 0.101325 Pascals = 0.0000147 lb/sq.in micromoles per liter of solution