Ross A. VirginiaDiana H. Wall 2014-11-13 tabular digitial data McMurdo Dry Valleys LTER McMurdo Dry Valleys LTER 10.6073/pasta/4da6e17a7a8d1e575241b3d79c047f08 https://mcm.lternet.edu/content/stoichiometry-experiment Soil communities in the McMurdo Dry Valleys are subject to many limitations, including resource limitations. However, the nutrients that are predominantly limiting to growth and diversity of soil biota are not known. Additionally, landscape history (N deposition, P weathering) and native N and P content (glacial till provenance) may influence the ability of soil communities to respond to nutrient additions or changes in nutrient availability associated with environmental change. Long-term experiments in the Bonney and Fryxell basins have been established with yearly application of aqueous nutrient additions: C, N, P, CN, and CP. Multiple nutrients additions were made at the Redfield Ratio of 106:16:1 (C:N:P). Responses of soil chemistry, CO2 flux, and biota are reported.  Since the attribute table for this dataset is very large, the user must construct the actual column name.  The FIRST letter represents the species, and the following letters represent the life stage/sex/sum type.  The nermatode species codes are:            S: Scottnema lindsayae       E: Eudorylaimus spp.       P: Plectus spp.              For example, in the attribute table,  "(code)ML" has the description "The total number of living male (species) adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent. In this case, a column name called "SML" would be  "The total number of living male Scottnema lindsayae adult nematodes..."            TREATMENT Codes           In the attribute table, the treatment is the manipulation for a given plot from which the soil was collected. The treatments are: (C) carbon additions as mannitol, (N) nitrogen additions as NH4NO3, (P) phosphorus additions as Na3PO4, (CN) carbon and nitrogen additions, (CP) carbon and phosphorus additions, (W) water-only additions, and (U) un-amended plots.     2007-01-15 2016-01-15 ground condition Jan, 2010 - Sue Welch created this metadata and accompanying Oracle data table from metadata info and an Excel spreadsheet from Becky Ball . 2014, Data and metadata moved into DEIMS, Inigo San Gil. As needed This is a core LTER study to determine the impact of changes in the availability of nutrient resources (carbon nitrogen and phosphorus) in the soil on biogeochemical cycling and soil biota. The experiment is being conducted in both Fryxell and Bonney Basin and was established in the 2006-2007 austral summer. 162.313003540039 162.313003540039 -77.725700378418 -77.725700378418 This is a core LTER study to determine the impact of changes in the availability of nutrient resources (carbon nitrogen and phosphorus) in the soil on biogeochemical cycling and soil biota. The experiment is being conducted in both Fryxell and Bonney Basin and was established in the 2006-2007 austral summer. 163.260437011719 163.260437011719 -77.608230590820 -77.608230590820 LTER Core Areas population dynamics None <cntorg>McMurdo Dry Valleys LTER</cntorg> <onlink>http://mcmlter.org/</onlink> <span property="dc:title" content="McMurdo Dry Valleys LTER" class="rdf-meta element-hidden"></span> Name: John "Jeb" E. Barrett Role: associated researcher Name: Byron J. Adams Role: associated researcher Name: Dorota Porazinska Role: lab crew Name: Breana L. Simmons Role: field crew Name: Ed Ayres Role: field crew Name: Uffe N. Nielsen Role: lab crew Name: Zachary Sylvain Role: lab crew Name: Bishwo N. Adhikari Role: lab crew Name: Becky A. Ball Role: lab crew Name: Michelle L Haddix Role: data manager Not Applicable Not Applicable Field and/or Lab Methods 2006-2007 Field Notes Bonney LOG: This file created by Jeb Barrett on January 15 2007. Soil was sampled on January 15th by Jeb Barrett, Ross Virginia, Diana Wall, Byron Adams and Breana Simmons. Treatments were applied on January 19th, 2007 by Breana Simmons, Jeb Barrett and Byron Adams. Worms were extracted using sugar floatation on 15 Jan 2007 Worms were preserved 20 Jan 2007 Samples were counted by Ed Ayres and Dorota Porazinska on 16-17 Jan Data entered on 19 Jan 2007 by Ed Ayres Data proofed on 26 Jan 2007 by Dorota Porazinska Invertebrates per kg dry weight equivalent calculations made by Jeb Barrett. Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/13 Related files: BR_soils.xls, F6_soils.xls, F6_worms.xls, RECON_worms.xls, SE-BR070127.xls, SEfryx070122.xls Field Notes Fryxell LOG: This file created by Jeb Barrett Soil was sampled on January 11th by Jeb Barrett, Ross Virginia, Diana Wall, Byron Adams and Breana Simmons. Treatments were applied by Breana Simmons, Ed Ayers and Byron Adams on January 17th, 2007. Worms were extracted using sugar floatation on 12 Jan 2007 Samples were counted by Byron Adams, Diana Wall and Breana Simmons on 12 Jan Data was entered by Breana Simmons on 13 Jan 2007 Data proofed on 26 Jan 2007 by Dorota Porazinska Worms preserved 14 Jan 2007 by Breana Simmons. Invertebrates per kg dry weight equivalent calculations made by Jeb Barrett. Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/13 Related files: BR_soils.xls, BR_worms.xls, F6_soils.xls, RECON_worms.xls, SE-BR070127.xls, SEfryx070122.xls 2007-2008 Field Notes Bonney LOG: This file created by Breana Simmons on January 3, 2008 Data entered by Breana Simmons/Ed Ayres Data checked by ?? Sampling 'Plots were sampled on January 2, 2008 by Diana Wall and Byron Adams, with direction from Breana Simmons. Solar chambers from the OTC plots were used as a guide for sampling. To ensure sampling under the treated area, the cone was centered in the plot and the sample was taken from the exact middle. Future samples should be taken in a "clockwise" formation. A stake was driven in at the 12:00 position (south) in all plots by Ed Ayres and Byron Adams, so that in the future, chambers can be set up against it as a guide for both sampling and treating. In blocks 5 -8 stakes were put in at at the 6:00 position due to plot logistics (you cannot walk BETWEEN plots 5 and 6 or 7 and 8 - paths are on the outside - see map). Treating Plots were treated by Byron Adams and Breana Simmons. Diana Wall and Ed Ayres filled containers. To reduce the number of pour jugs, two C, N and P jugs were used, for a total of 6 jugs. DI was applied first, then C, P, CP (from the P jug), CN (from the C jug) and N. This is not as confusing as it sounds. Chambers were placed again, over the center, against the nail, as a guide for pouring. Any solution containing C became hard to pour and jugs were shaken rigorously over plots. Processing Fresh soil was weighed by Ed Ayres into soil cans and placed in a 105C oven for 24 hours. Diana Wall and Breana Simmons were on screens. Byron "Skua Boy" Adams centrifuged and played paper towel wad basketball. Dry soil was weighed by ??. Nematodes were counted by ??. Invertebrates per kg dry weight equivalent calculations made by Uffe N. Nielsen on Juy 22 2009. using the formula: Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/13 Field Notes Fryxell LOG: This file created by Breana Simmons on January 3, 2008 Data entered by Breana Simmons/Ed Ayres Data checked by ?? Sampling 'Plots were sampled on January 2, 2008 by Diana Wall and Byron Adams, with direction from Breana Simmons. Solar chambers from the OTC plots were used as a guide for sampling. To ensure sampling under the treated area, the cone was centered in the plot and the sample was taken from the exact middle. Future samples should be taken in a "clockwise" formation. A stake was driven in at the 12:00 position (south) in all plots by Ed Ayres and Byron Adams, so that in the future, chambers can be set up against it as a guide for both sampling and treating. In blocks 5 -8 stakes were put in at at the 6:00 position due to plot logistics (you cannot walk BETWEEN plots 5 and 6 or 7 and 8 - paths are on the outside - see map). Treating Plots were treated by Byron Adams and Breana Simmons. Diana Wall and Ed Ayres filled containers. To reduce the number of pour jugs, two C, N and P jugs were used, for a total of 6 jugs. DI was applied first, then C, P, CP (from the P jug), CN (from the C jug) and N. This is not as confusing as it sounds. Chambers were placed again, over the center, against the nail, as a guide for pouring. Any solution containing C became hard to pour and jugs were shaken rigorously over plots. Processing Fresh soil was weighed by Ed Ayres into soil cans and placed in a 105C oven for 24 hours. Diana Wall and Breana Simmons were on screens. Byron "Skua Boy" Adams centrifuged and played paper towel wad basketball. Dry soil was weighed by ??. Nematodes were counted by ??. Invertebrates per kg dry weight equivalent calculations made by Uffe N. Nielsen on July 22 2009. using the formula: Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/13 2009-2010 Field Notes Bonney LOG: This file created on 1/18/10 by Zachary Sylvain. Data entered by Zachary Sylvain. Data checked by Zachary Sylvain. Calculations by Zachary Sylvain using the formula: (# individuals / dry soil) * 1000 Samples collected at 12:00 (upslope, away from Lake Bonney) 2N taken from 11:00 due to rock at 12:00 3P taken closer to center but still at 12:00 (rock) Samples taken by Zachary Sylvain and Byron Adams and plots treated by Zachary Sylvain and Byron Adams Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/18/13 Field Notes Fryxell LOG: This file created on 01/08/10 by Bishwo Adhikari Data entered by Bishwo Adhikari Data checked by Zachary Sylvain. Calculations by Zachary Sylvain using the formula: (# individuals / dry soil) * 1000 Soil samples collected on 01/05/10 by Dr. Becky Ball Extraction done on 01/06/10 Plot treatment by Zach Sylvain, Bishwo Adhikari and Dr. Becky Ball Solutions formed "slush" in caps when refilling carboys Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/18/13 Three sites were chosen on generally flat areas of moderately patterned soil. Plots were laid out in an identical design at each site. There are 7 treatments replicated 8 times in blocks. Treatments were randomly assigned to the plots within each block. Each plot measures 1 m x 1 m (with a 0.83 m diameter area within used for experimental treatments and analyses). Plots are delineated by nails inserted in the soil, and the margins of each site are marked by PVC stakes approximately 60 cm high.  Water and aqueous nutrient treatments were applied annually at a rate of 5.6 L per plot, with 15 g C m-2 as mannitol, 2.5 g N m-2 as NH4NO3, and/or 0.75 g P m-2 as Na3PO4 (see Treatment Codes under Additional Information). Soil samples were taken for soil chemistry, organism enumeration and moisture content analysis as follows: Sampling bags were prepared with one sterile Whirlpak bag and clean plastic scoop per sample. Samples were taken from within the 0.83 m diameter circular area within each plot. The location of the sampling was recorded each year so that areas were not re-sampled. Using the plastic scoop, soil was collected to 10 cm depth. Very large rocks (greater than 20 mm diameter) were excluded from the sample.  The soil was shoveled into the Whirlpak bag until three quarters full (about 1.5 kg soil). The soil was gently mixed in the bag, then the bag was closed tightly, expelling as much air as possible. The soil samples were stored in a cooler for transportation. On return to the Crary laboratory in McMurdo (within 8 h of sampling), the soils were stored at 5°C until further processing. In the laboratory, soil samples were handled in a laminar flow hood to limit contamination. The Whirlpak bags of soil were again mixed by gentle tumbling prior to opening. A subsample of approximately 50 g was removed and placed in a pre-weighed aluminum dish, and weighed on a balance accurate to 0.01 g. This sample was dried at 105°C for 24 hours. The sample was removed, placed in desiccator to cool, and re-weighed. These data were used to calculate gravimetric water content of the soil (g water g-1 dry soil) and to express data as value per unit dry weight of soil. Invertebrate soil extractions follow the methods of Freckman and Virginia (1993). Approximately 200 cm3 of soil was placed in a pre-weighed 800 ml plastic beaker. Rocks greater than 3-4 mm in diameter were removed from the sample leaving approximately 100 g soil, and the weight of the soil was recorded. Cold tap water was added up to 650 ml. The soil suspension was stirred carefully (star stir or figure of 8) for 30 seconds, using a spatula. Immediately the liquid was poured into wet screens - a stack of 40 mesh on top of a 400 mesh. The screens were rinsed gently with ice cold tap water (from a wash bottle) through the top of the stack, keeping the screens at an angle as the water filtered through. The water was kept on ice at all times. The top screen was removed, and the lower screen rinsed top down, never directly on top of the soil, but at the top of the screen and from behind. The water was allowed to cascade down and carry the particles into the bottom wedge of the angled screen. The side of the screen was tapped gently to filter all the water through. The suspension was rinsed from the front and the back, keeping the screen at an angle and not allowing the water to overflow the edge of the screen. The soil particles were backwashed into a 50 ml plastic centrifuge tube, tipping the screen into the funnel above the tube and rinsing the funnel gently. The suspension was centrifuged for five minutes at 1744 rpm. The liquid was decanted, leaving a few ml on top of the soil particles. The tube was filled with sucrose solution (454 g sucrose per liter of tap water, kept refrigerated) up to 45 ml. This was stirred gently with a spatula until the pellet was broken up and suspended. The suspension was centrifuged for one minute at 1744 rpm, decanted into a wet 500 mesh screen, rinsed well with ice cold tap water and backwashed into a centrifuge tube. Samples were refrigerated at 5°C until counted.  Samples were washed in to a counting dish and examined under a microscope at x10 or x20 magnification. Rotifers and tardigrades were identified and counted. Nematodes were identified to species and sex, and counted. Total numbers in each sample were recorded on data sheets. All species of nematode, and all rotifers and tardigrades found in the sample were recorded. A subsample of the soil was gradually stepped down and frozen at -20°C and shipped to Dartmouth College for soil chemistry analysis. All soils were sieved to less than 2 mm. For measurements of pH, 40 ml DI water was added to 20 g of soil in a clean, DI-rinsed glass beaker. The samples were stirred until thoroughly mixed (about 5-10 sec). After sitting to equilibrate for 10 min., the samples were stirred again and a reading was taken with a VWR 8015 pH meter. For measurements of electrical conductivity, an additional 60 ml DI water was then added (totaling 100 ml water). The samples were stirred until thoroughly mixed (about 5-10 sec). After sitting to equilibrate for 10 min., the samples were stirred again and a reading was taken with an Orion 160 conductivity meter.  For mineral N content, a 20 g subsample was extracted in 50 ml 2M KCl for 1 h and filtered through Whatman #42 filter paper. Extracts were frozen prior to analysis for NH4-N and NO2+NO3-N on a Lachat Quikchem 8500 (Lachat Instruments, Loveland, CO). Ortho-phosphate content was measured by extracting a 10 g subsample in 50 ml 0.5M NaHCO3 for 1 h and filtering through Whatman #40 filter paper. 30 ml of the extracts were then brought to pH ~ 2 with 6N HCl and allowed to degas for 2 hours. Samples were frozen prior to analysis on a Lachat. For total C and N, a subsample of soil was hand-ground using a sapphire mortar and pestle, from which a 250 mg subsample was run on a Carlo Erba NA 1500 N Elemental Analyzer (Carlo Erba Instruments, Milan, Italy). For organic C, 1 mg of ground soil was acidified with 1 ml 6 N HCl and dried at 95°C for 48 h. A 250 mg subsample was run on a Carlo Erba, and the value was corrected for the change in weight associated with acidification.  Microbial C, N, and P were measured using the chloroform fumigation extraction technique. Approximately 20 g of soil from each sample was extracted in 50 ml of 0.5 M K2SO4. Extracts were shaken at 240 rpm for 45 minutes, then centrifuged at 15,000 rpm for 15 min. Half of the supernatant was brought to pH ~ 2 with 3N H2SO4. A duplicate 30-g subsample was placed in a vacuum desiccator and fumigated with ethanol-free chloroform for 120 h. After fumigation, 10 g were removed and extracted in NaHCO3 as above for ortho-PO43- content. The remaining 20 g were extracted in K2SO4 as described above. All extracts were frozen prior to analysis.  Acidified K2SO4 samples were run on a Shimadzu TOC-5000A (Shimadzu Corporation, Columbia, MD) for TOC.  Unacidified samples underwent a Kjeldahl digestion and analyzed for N on a Lachat.      2006-2007Field Notes BonneyLOG: This file created by Jeb Barrett on January 15 2007.Soil was sampled on January 15th by Jeb Barrett, Ross Virginia, Diana Wall, Byron Adams and Breana Simmons. Treatments were applied on January 19th, 2007 by Breana Simmons, Jeb Barrett and Byron Adams.Worms were extracted using sugar floatation on 15 Jan 2007Worms were preserved 20 Jan 2007Samples were counted by Ed Ayres and Dorota Porazinska on 16-17 JanData entered on 19 Jan 2007 by Ed AyresData proofed on 26 Jan 2007 by Dorota PorazinskaInvertebrates per kg dry weight equivalent calculations made by Jeb Barrett.Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/13Related files: BR_soils.xls, F6_soils.xls, F6_worms.xls, RECON_worms.xls, SE-BR070127.xls, SEfryx070122.xlsField Notes FryxellLOG: This file created by Jeb BarrettSoil was sampled on January 11th by Jeb Barrett, Ross Virginia, Diana Wall, Byron Adams and Breana Simmons. Treatments were applied by Breana Simmons, Ed Ayers and Byron Adams on January 17th, 2007.Worms were extracted using sugar floatation on 12 Jan 2007Samples were counted by Byron Adams, Diana Wall and Breana Simmons on 12 JanData was entered by Breana Simmons on 13 Jan 2007Data proofed on 26 Jan 2007 by Dorota PorazinskaWorms preserved 14 Jan 2007 by Breana Simmons.Invertebrates per kg dry weight equivalent calculations made by Jeb Barrett.Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/13Related files: BR_soils.xls, BR_worms.xls, F6_soils.xls, RECON_worms.xls, SE-BR070127.xls, SEfryx070122.xls2007-2008Field Notes BonneyLOG: This file created by Breana Simmons on January 3, 2008Data entered by Breana Simmons/Ed AyresData checked by ??Sampling'Plots were sampled on January 2, 2008 by Diana Wall and Byron Adams, with direction from Breana Simmons. Solar chambers from the OTC plots were used as a guide for sampling. To ensure sampling under the treated area, the cone was centered in the plot and the sample was taken from the exact middle. Future samples should be taken in a "clockwise" formation. A stake was driven in at the 12:00 position (south) in all plots by Ed Ayres and Byron Adams, so that in the future, chambers can be set up against it as a guide for both sampling and treating. In blocks 5 -8 stakes were put in at at the 6:00 position due to plot logistics (you cannot walk BETWEEN plots 5 and 6 or 7 and 8 - paths are on the outside - see map).TreatingPlots were treated by Byron Adams and Breana Simmons. Diana Wall and Ed Ayres filled containers. To reduce the number of pour jugs, two C, N and P jugs were used, for a total of 6 jugs. DI was applied first, then C, P, CP (from the P jug), CN (from the C jug) and N. This is not as confusing as it sounds. Chambers were placed again, over the center, against the nail, as a guide for pouring. Any solution containing C became hard to pour and jugs were shaken rigorously over plots.ProcessingFresh soil was weighed by Ed Ayres into soil cans and placed in a 105C oven for 24 hours. Diana Wall and Breana Simmons were on screens. Byron "Skua Boy" Adams centrifuged and played paper towel wad basketball. Dry soil was weighed by ??. Nematodes were counted by ??.Invertebrates per kg dry weight equivalent calculations made by Uffe N. Nielsen on Juy 22 2009.using the formula:Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/13Field Notes FryxellLOG: This file created by Breana Simmons on January 3, 2008Data entered by Breana Simmons/Ed AyresData checked by ??Sampling'Plots were sampled on January 2, 2008 by Diana Wall and Byron Adams, with direction from Breana Simmons. Solar chambers from the OTC plots were used as a guide for sampling. To ensure sampling under the treated area, the cone was centered in the plot and the sample was taken from the exact middle. Future samples should be taken in a "clockwise" formation. A stake was driven in at the 12:00 position (south) in all plots by Ed Ayres and Byron Adams, so that in the future, chambers can be set up against it as a guide for both sampling and treating. In blocks 5 -8 stakes were put in at at the 6:00 position due to plot logistics (you cannot walk BETWEEN plots 5 and 6 or 7 and 8 - paths are on the outside - see map).TreatingPlots were treated by Byron Adams and Breana Simmons. Diana Wall and Ed Ayres filled containers. To reduce the number of pour jugs, two C, N and P jugs were used, for a total of 6 jugs. DI was applied first, then C, P, CP (from the P jug), CN (from the C jug) and N. This is not as confusing as it sounds. Chambers were placed again, over the center, against the nail, as a guide for pouring. Any solution containing C became hard to pour and jugs were shaken rigorously over plots.ProcessingFresh soil was weighed by Ed Ayres into soil cans and placed in a 105C oven for 24 hours. Diana Wall and Breana Simmons were on screens. Byron "Skua Boy" Adams centrifuged and played paper towel wad basketball. Dry soil was weighed by ??. Nematodes were counted by ??.Invertebrates per kg dry weight equivalent calculations made by Uffe N. Nielsen on July 22 2009.using the formula:Numbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/03/132009-2010Field Notes BonneyLOG: This file created on 1/18/10 by Zachary Sylvain.Data entered by Zachary Sylvain.Data checked by Zachary Sylvain.Calculations by Zachary Sylvain using the formula: (# individuals / dry soil) * 1000Samples collected at 12:00 (upslope, away from Lake Bonney)2N taken from 11:00 due to rock at 12:003P taken closer to center but still at 12:00 (rock)Samples taken by Zachary Sylvain and Byron Adams and plots treated by Zachary Sylvain and Byron AdamsNumbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/18/13Field Notes FryxellLOG: This file created on 01/08/10 by Bishwo AdhikariData entered by Bishwo AdhikariData checked by Zachary Sylvain.Calculations by Zachary Sylvain using the formula: (# individuals / dry soil) * 1000Soil samples collected on 01/05/10 by Dr. Becky BallExtraction done on 01/06/10Plot treatment by Zach Sylvain, Bishwo Adhikari and Dr. Becky BallSolutions formed "slush" in caps when refilling carboysNumbers per kg dry soil changed by M L Haddix using formula 1000*(#individuals/(extraction mass*(mass of dry soil/mass of soil used for moisture calc))) 7/18/13 unknown SOILS_SE_CHEM DATASET_CODE Unique identifier for the table in the MCM LTER database The data provider Unique identifier for the table in the MCM LTER database BASIN The lake basin where the soil sample was collected from (Bonney or Fryxell). The data provider The lake basin where the soil sample was collected from (Bonney or Fryxell). DATE_TIME The date the soil sample was collected from the field The data provider calendar date/time mm/dd/yyyy gregorian calendar SAMPLE_ID The block and treatment combination of the sample. The data provider The block and treatment combination of the sample. BLOCK_ID The block number that the soil sample was collected from. The data provider The block number that the soil sample was collected from. Treatment The manipulation for a given plot from where the soil was collected. See 'Additional Info' for treatment codes The data provider The manipulation for a given plot from where the soil was collected. See 'Additional Info' for treatment codes Soil water content The gravimetric soil water content The data provider 0 100 percent g/g pH The opposite log of the hydrogen ion concentration of a 1:2 soil-water paste The data provider 0 pH CONDUCTIVITY The electrical conductivity in microSiemens/cm of a 1:5 soil:deionized water solution. The data provider microSiemens/cm NH4_N Ammonia concentration found using Lachat The data provider 0 2000 microgram/g soil 0.1 NO3_NO2_N Nitrate concentration found using Lachat The data provider 0 2000 microgram/g soil 0.1 PO4_P Phosphate concentration found using Lachat The data provider 0 2000 microgram/g soil 0.1 TC Total carbon (% C by wt.), the carbon content of the unacidified soil. The data provider 0 dimensionless TN Total nitrogen (% N by wt.), the nitrogen content of the unacidified soil. The data provider 0 dimensionless SOC Soil organic carbon (% C by wt.), the carbon content of acidified soil The data provider 0 dimensionless Microbial-C Microbial biomass carbon The data provider 0 2000 microgram C/g soil 0.1 Microbial-N Microbial biomass nitrogen The data provider 0 2000 microgram N/g soil 0.1 Chemistry data Comments Any comments about the chemistry data records collected The data provider Any comments about the chemistry data records collected SML Abundance of live male Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil SMD Abundance of dead male Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil SFL Abundance of live female Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil SFD Abundance of dead female Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil SJL Abundance of live juvenile Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil SJD Abundance of dead juvenile Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil SA Abundance of live and dead adult Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil SJ Abundance of live and dead juvenile Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil STL Total Abundance of live Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil STD Total Abundance of dead Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil STDL Total Abundance of live and dead Scottnema lindsayae extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EML Abundance of live male Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EMD Abundance of dead male Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EFL Abundance of live female Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EFD Abundance of dead female Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EJL Abundance of live juvenile Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EJD Abundance of dead juvenile Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EA Abundance of live and dead adult Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil EJ Abundance of live and dead juvenile Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil ETL Total abundance of live Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil ETD Total abundance of dead Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil ETLD Total abundance of live and dead Eudorylaimus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PFL Abundance of live female Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PFD Abundance of dead female Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PJL Abundance of live juvenile Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PJD Abundance of dead juvenile Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PA Abundance of live and dead adult Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PJ Abundance of live and dead juvenile Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PTL Total abundance of live Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PTD Total abundance of dead Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil PTLD Total abundance of live and dead Plectus sp. extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil Total Rotifers Total abundance of live rotifers extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil Total Tardigrades Total abundance of live tardigrades extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil Total Alive Total abundance of live nematodes extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil Total Dead Total abundance of dead nematodes extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil TOTAL Total abundance of live and dead nematodes extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil Other Organisms Abundance of other organisms extracted from soil (#/kg dry soil) The data provider 0 # / kg drysoil COMMENTS Information about samples and occurrence of other organisms The data provider Information about samples and occurrence of other organisms McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 \n 1 column , https://mcm.lternet.edu/sites/default/files/data/SOILS_SE_CHEM.csv None 2014-11-13 2014-11-13 McMurdo Dry Valleys LTER http://mcmlter.org/ Biological Data Profile of the Content Standards for Digital Geospatial Metadata devised by the Federal Geographic Data Committee. Drupal Ecological information Management Systems, version D7, Biological Data Profile module