upper_ponds English utf8 dataset McMurdo Dry Valleys LTER http://mcmlter.org/ 2014-11-12 ISO 19115-2 Geographic Information - North American Profile Metadata - Data with Biological Extensions ISO 19115-2:2009(E) Upper Pond Nematode Survey Experiment 2014-11-12 publication Daryl Moorhead University of Toledo http://www.utoledo.edu/ (419) 530-2017 (419) 530-4421 Department of Earth, Ecology and Environmental Sciences Toledo OH 43606 US daryl.moorhead@utoledo.edu pointOfContact Diana Wall Colorado State University http://www.colostate.edu Johnson Hall 107 Fort Collins CO 80523 US Diana.Wall@colostate.edu http://wp.natsci.colostate.edu/walllab/ pointOfContact Ross Virginia Dartmouth College http://dartmouth.edu/ (603) 646-0192 Hinman Box 6182 Hanover NH 03755 US ross.a.virginia@dartmouth.edu http://sites.dartmouth.edu/ravirginia/ pointOfContact documentDigital In January 2001, we surveyed streams and ponds above 300 m asl in Taylor Valley, South Victoria Land, Antarctica. One pond was examined in detail. Organic materials covered nearly 100% of the adjacent soil to 5-20 m from the shore, with intermittent patches to 80 m. Organic matter averaged 257 gC/m2, and totaled 1388 kg organic C on the soil around the pond. Soil moisture content (0.56 to 12.41%) decreased with distance from shore, whereas pH (7.8 to 10.8) increased with distance. Electrical conductivity was lowest in the soils less than 10 m from the pond (416 +- 94 uS/cm). Mineral soil organic C and total N concentrations were greatest between 10-30 m from the edgeof the pond (1.21 +- 0.37 and 0.13 +- 0.05 mg/g soil, respectively). Soil invertebrates were present in only 50% of samples and included tardigrades, rotifers and two nematodes, Scottnema lindsayae and Plectus antarcticus. A non-parametric, discriminant function analysis based on soil moisture, soil organic carbon and electrical conductivitycorrectly predicted 87.0% of sites that had invertebrates and 70.8% of sites for which invertebrates were absent. Tardigrades, rotifers and Plectus were found only in the wettest soils nearest the pond whereas Scottnema was restricted to drier soils farther from shore. Other ponds and streams also showed substantial accumulations of organic matter, suggesting that upland wetlands serve as resource islands in these polar deserts that provide a source of organic matter to nearby soils. Name: John "Jeb" E. Barrett Role: associated researcher Name: Dorota Porazinska Role: lab crew Name: Inigo San Gil Role: data manager Name: Michelle L Haddix Role: lab crew completed McMurdo Dry Valleys LTER http://mcmlter.org/ unknown This file contains data compiled by Ed Khun, Andy Parsons and Jeb Barrett. The final data QA/QC and analysis were performed by Jeb Barrett. population dynamics theme LTER Core Areas English  4 transects around single pond (Highland Pond) running N, S, E and W. The zones in this study refer to foliar mat cover (and were correlated with distance from the pond). Zone 1 was 0-10m from pond, zone 2 10-30m, zone 3 ~20-80m and zone 4 >80m. Three reps were taken from each “zone” in each transect for a total of 48 samples. 162.316223144531 162.307296752930 -77.726249694824 -77.724754333496 ground condition 2001-01-01 2001-01-31  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..."   Preserved nematode samples are stored in the NREL Preserved Nematode Collection in room 226, College of Natural Resources, Colorado State University. Soils are stored in the Environmental Measurements Laboratory at Dartmouth College. https://mcm.lternet.edu/sites/default/files/data/SOILS_UPPERPONDS.csv SOILS_UPPERPONDS eng; US McMurdo Dry Valleys LTER SOILS_UPPERPONDS Data Source Definition : details about the data-containing spreadsheet, such as units and definitions. Record Delimiter : \n Number of Header Lines : 28 Number of Footer Lines : 1 Orientation : Column Quote Character : "Field Delimiter : , false DATASET_CODE Unique identifier for the table in the MCM LTER database OBSERVATION Sample number (1-48) TRANSECT The transect from where the soil sample was collected. north North Transect south South Transect east East Transect west West Transect ZONE The zone number that serves to ID the exact plot location where data was collected 1 Zone ID 1 2 Zone ID 2 3 Zone ID 3 4 Zone ID 4 REP The number (1-3) assigned to replicate samples collected from each zone along a transect 1 First Replicate 2 Second Replicate 3 Third Replicate DATE_TIME Date and time when sample was aquired Date Time Format: MM/DD/YYYY TN Total soil nitrogen (% N by wt.), the nitrogen content of the unacidified soil SOC Soil organic carbon (% C by wt.), the carbon content of acidified soil CN The ratio of soil organic carbon to total nitrogen SOIL_WATER_CONTENT The gravimetric soil water content PH The opposite loge the hydrogen ion concentration of a 1:2 soil-water paste EC The electrical conductivity of a 1:5 soil-water dilution SML The total number of living male Scottmema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent SMD The total number of dead male Scottmema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent SFL The total number of living female Scottmema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent SFD The total number of dead female Scottmema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent SJL The total number of living juvenile Scottmema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent SJD The total number of dead juvenile Scottmema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent SA The total number of living and dead Scottmema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent SJ The total number of living and dead Scottmema lindsayae juvenile nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent STL total number of living Scottmema lindsayae (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent STD The total number of dead Scottmema lindsayae (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent STLD The total number of live + dead Scottmema lindsayae (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EML The total number of living male Eudorylaimus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EMD The total number of dead male Eudorylaimus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EFL The total number of living female Eudorylaimus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EFD The total number of dead female Eudorylaimus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EJL The total number of living juvenile Eudorylaimus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EJD The total number of dead juvenile Eudorylaimus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EA The total number of living and dead Eudorylaimus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent EJ The total number of living and dead Eudorylaimus juvenile nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent ETL total number of living Eudorylaimus (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent ETD The total number of dead Eudorylaimus (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent ETLD The total number of live + dead Eudorylaimus (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PFL The total number of living female Plectus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PFD The total number of dead female Plectus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PJL The total number of living juvenile Plectus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PJD The total number of dead juvenile Plectus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PA The total number of living and dead Plectus adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PJ The total number of living and dead Plectus juvenile nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PTL total number of living Plectus (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PTD The total number of dead Plectus (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent PTLD The total number of live + dead Plectus (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent TOTAL_ROTIFERS total number of rotifers per kg soil oven dry weight equivalent present in a sample TOTAL_TARDIGRADES total number of tardigrades per kg soil oven dry weight equivalent present in a sample LIVENEMS The total number of living nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent (#/kg soil). DEADNEMS The total number of dead nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent (#/kg soil). TOTALNEMS The total number of living and dead nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent (#/kg soil). TAXA The total number of metazoan taxa extracted from the soil sample COMMENTS Comments DBF https://mcm.lternet.edu/sites/default/files/data/SOILS_UPPERPONDS.csv dataset The mass and extent of organic matter cover on soils adjacent to Higland Pond were examined with line transects extending from the approximate center of the pond to a distance of 90 m beyond the shoreline. Eight line transects were established, approximately oriented in N, NE, E, SE, S, SW, W, and NW directions. An estimate of organic matter cover on soil surfaces was determined as the fraction of the distance over which organic material intercepted each line. Organic matter samples were collected at intervals along each transect at ca. 50 cm intervals within continuous cover and where present within areas of patchy cover. Collections were made with a 0.83 cm diameter steel corer, thrust through the organic layer into the underlying mineral soil. Organic matter samples were returned to the Crary Laboratory facility, McMurdo Station, Antarctica for mass determinations. Samples were placed in a drying oven at 60degC for 24 hours. Dry weights were recorded and samples then were placed in a muffle furnace for 6 hours at a maximum temperature of 500degC. Ash weights were recorded and ash-free dry weights calculated for all samples. These data then were used to estimate the amount of organic matter on soil surfaces associated with upland wetlands. All estimates of ash-free dry mass were converted to units of organic carbon, assuming a content of 50% carbon by weight. Mineral soil samples (n = 48) were collected around Highland Pond along transects established in each of the 4 off-cardinal directions. Samples were collected in 4 zones classified by extent of surface organic mat cover and appearance (foliar or granular mats). Zone 1 consisted of soils with foliar mats covering 100% of the surface and extended to 10 m from the edge of the pond. Zone 2 had granular mats covering greater than 30% of the soil surface and extended about 10-30 m from the edge of the pond. Zone 3 had intermittent mats covering less than 20% of the soil surface and extended 20-80 m from the pond. Zone 4 had no visible mats and extended greater than 80 m from the edge of the pond. Each sample consisted of approximately 1 kg of soil collected from the top 10 cm of the mineral soil profile with pre-sterilized Nasco trowels. Three samples were collected from each zone along each of the 4 transects, for a total of 48 samples. Sampling excluded surface organic material. Samples were sealed in Whirl-Pak polyethylene bags and transported to Crary Laboratory at McMurdo Station for analyses. At Crary Laboratory, mineral soils were sieved to remove rock fragments greater than 2 mm. Subsamples were oven-dried at 50degC for 48 h to determine gravimetric soil moisture content. Invertebrates were extracted from approximately 100 g soil using the modified sugar centrifugation technique described by Freckman and Virginia (1993). Extraction of invertebrates was completed within 48 h of collection. Species identification and life stage were determined and enumerated using light microscopy. Soil salinity was determined from the electrical conductivity of a 1:5 soil solution of sieved soil in de-ionized water. Electrical conductivity was measured using a Corning 311 conductivity meter, temperature-calibrated with a 0.01 M KCl solution. Soil pH was determined from a saturated paste (1:2 soil in de-ionized water) with an Orion model 720A pH meter. A subsample of each soil sample was ground in a ball mill and acidified with 50% HCl to remove carbonates. Approximately 75 mg of both the acidified and un-acidified soil were analyzed with a Carlo Erba 1500 elemental analyzer (Milan, Italy) to determine total carbon and nitrogen, and organic carbon content. Carbonate content of the soil was calculated as the difference between total carbon and organic carbon by comparing results from the acidified and un-acidified samples. 2000-2001 Field Notes Log: This file was created by Rebecca Lavier.  Data were entered by Rebecca Lavier on 12 February 2001. These data were proofed by Pilar Tillberg and Rebecca Lavier on 14 February 2001. [Pilar Tillberg 14 Feb 01] Calculations for # nematodes per kg soil were done by Rebecca Lavier on 15 February 2001.  [Rebecca Lavier 15 Feb 01]. Soil Moisture calculated as the (g of water/ g dry soil) *100 by M L Haddix 9/26/14 Comments: Data were collected from the Upper Pond site in Antarctica.  Data were collected on 22 January 2001.  Nematodes were extracted on 24 January 2001.  Samples were counted by Dorota Porazinska on 25 January and 26 January 2001. [Rebecca Lavier 12 Feb. 01]. Metadata Access Constraints: none Metadata Use Constraints: none annually McMurdo Dry Valleys LTER http://mcmlter.org/ pointOfContact