SHACKLETON_INVERTS English utf8 dataset McMurdo Dry Valleys LTER Information Manager im@mcmlter.org pointOfContact 2021-10-07 ISO 19115-2 Geographic Information - North American Profile Metadata - Data with Biological Extensions ISO 19115-2:2009(E) Soil invertebrate surveys from the Shackleton Glacier region of Antarctica during the 2017-2018 austral summer 2021-10-07 publication Byron Adams Brigham Young University byron_adams@byu.edu https://biology.byu.edu/adams-lab 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 Noah Fierer University of Colorado Boulder http://www.colorado.edu/ noah.fierer@colorado.edu pointOfContact W. Berry Lyons The Ohio State University https://www.osu.edu/ (614) 688-3241 275 Mendenhall Lab Columbus OH 43210 US lyons.142@osu.edu http://research.bpcrc.osu.edu/EnvironmentalGeochemistry/ pointOfContact Ian Hogg Polar Knowledge Canada https://www.canada.ca/en/polar-knowledge.html hogg@waikato.ac.nz https://sci.waikato.ac.nz/about-us/people/hogg pointOfContact Melisa Diaz The Ohio State University https://www.osu.edu/ diaz.237@osu.edu https://polarenv.weebly.com pointOfContact Nicholas Dragone University of Colorado Boulder http://www.colorado.edu/ nicholas.dragone@colorado.edu pointOfContact Nathan Lemoine Marquette University https://www.marquette.edu nathan.lemoine@marquette.edu pointOfContact André Franco Colorado State University http://www.colostate.edu Andre.franco@colostate.edu pointOfContact Marci Shaver-Adams Brigham Young University msadams@byu.edu pointOfContact Geoffrey Schellens United States Antarctic Program https://www.usap.gov/ Geoffrey.Schellens.Contractor@usap.gov pointOfContact documentDigital During the 2017-2018 austral summer, a survey of soil invertebrate diversity and abundance was conducted throughout the Shackleton Glacier region of Antarctica to investigate whether habitat suitability, taxonomic diversity, and community composition follow predictable temporal patterns after the Last Glacial Maximum (LGM). Soil samples were collected along elevation transects from twelve ice-free areas to capture maximum variation in soil properties, geochemistry, and surface exposure age. This data package includes invertebrate abundances (nematodes, tardigrades, rotifers) for each sample categorized by species, sex, and maturity (juvenile, adult). Name: Renée F. Brown Role: data manager completed McMurdo Dry Valleys LTER Information Manager im@mcmlter.org pointOfContact disturbance population dynamics theme LTER Core Areas English The Shackleton Glacier (~84.5 to 86.4°S; ~130 km long and ~10 km wide) is a major outlet glacier of the East Antarctic Ice Sheet (EAIS) which drains north into the Ross Embayment. Center point approximated from bounding box coordinates provided by André L. C. Franco in October 2021. -170.360481000000 -170.360481000000 -85.615938000000 -85.615938000000 ground condition 2017-12-26 2018-02-06 Funding for this work was provided by the National Science Foundation via grants #OPP-1341736 to BJA, #OPP-1341648 to DHW, #OPP-1341631 to WBL, #OPP-1341629 to NF, and #GRFP-60041697 to MAD. Data management support was provided by the National Science Foundation for Long Term Ecological Research via grant #OPP-1637708. https://mcm.lternet.edu/sites/default/files/data/shackleton-adams-inverts-20211008.csv SHACKLETON_INVERTS eng; US McMurdo Dry Valleys LTER SHACKLETON_INVERTS Data Source Definition : Soil invertebrate survey data. Number of Header Lines : 1 Number of Footer Lines : 0 Orientation : Column Quote Character : "Field Delimiter : , false DATASET_CODE Internal dataset code. SITE Sampling site code. AV Mount Augustana BP Bennett Platform HV Mount Heekin KR Kitching Ridge MF Mount Franke MSP Mount Speed MW Mount Wasko NP Nilsen Peak RM Roberts Massif SH Schroeder Hill TGV Thanksgiving Valley TN Taylor Nunatak TRANSECT Elevation transect id at the sampling site where the sample was collected. REPLICATE Sample replicate id. LATITUDE Latitude of sampling location. LONGITUDE Longitude of sampling location. ELEVATION_M Elevation of sampling location. TOTAL_SOIL_MASS_G Total soil mass collected. WET_SOIL_MASS_G Wet soil mass used for extractions. DRY_SOIL_MASS_G Dry soil mass used for extractions. SOIL_MOISTURE Soil moisture content of sample. SN_M_LIVING Abundance of living adult male Scottnema represented as individuals per kg of dry soil. SN_M_DEAD Abundance of dead adult male Scottnema represented as individuals per kg of dry soil. SN_F_LIVING Abundance of living adult female Scottnema represented as individuals per kg of dry soil. SN_F_DEAD Abundance of dead adult female Scottnema represented as individuals per kg of dry soil. SN_J_LIVING Abundance of living juvenile Scottnema represented as individuals per kg of dry soil. SN_J_DEAD Abundance of dead juvenile Scottnema represented as individuals per kg of dry soil. EU_M_LIVING Abundance of living adult male Eudorylaimus represented as individuals per kg of dry soil. EU_M_DEAD Abundance of dead adult male Eudorylaimus represented as individuals per kg of dry soil. EU_F_LIVING Abundance of living adult female Eudorylaimus represented as individuals per kg of dry soil. EU_F_DEAD Abundance of dead adult female Eudorylaimus represented as individuals per kg of dry soil. EU_J_LIVING Abundance of living juvenile Eudorylaimus represented as individuals per kg of dry soil. EU_J_DEAD Abundance of dead juvenile Eudorylaimus represented as individuals per kg of dry soil. PL_F_LIVING Abundance of living adult female Plectus represented as individuals per kg of dry soil. PL_F_DEAD Abundance of dead adult female Plectus represented as individuals per kg of dry soil. PL_J_LIVING Abundance of living juvenile Plectus represented as individuals per kg of dry soil. PL_J_DEAD Abundance of dead juvenile Plectus represented as individuals per kg of dry soil. ROTIFERS Abundance of rotifers represented as individuals per kg of dry soil. TARDIGRADES Abundance of tardigrades represented as individuals per kg of dry soil. COMMENTS Comments about the sample. DBF https://mcm.lternet.edu/sites/default/files/data/shackleton-adams-inverts-20211008.csv dataset A total of 232 soils (0-5 cm depth) were collected from twelve ice-free areas along the Shackleton Glacier from December 2017 to January 2018. The locations include Roberts Massif, Schroeder Hill, Bennett Platform, Kitching Ridge, Mt. Augustana, Mt. Heekin, Thanksgiving Valley, Taylor Nunatak, Mt. Franke, Mt. Wasko, Nilsen Peak, and Mt. Speed, and range from 150 to 2221 m.a.s.l. in elevation. Between 14 and 26 soil samples were collected along elevation transects (up to 2000 m in length) from each location to capture maximum variation in soil properties, geochemistry, and surface exposure age.Nematodes, tardigrades and rotifers were extracted using a sugar centrifugation technique developed for Antarctic soils (Freckman & Virginia, 1993), and identified and enumerated via light microscopy. Mites and springtails were picked individually from each sample using a dissection microscope by mixing 50 g soil with 500 ml sugar solution (454 g L-1) and removing individual animals as they floated to the surface. However, microarthropods were depauperate such that they were not assessed in this study. Tardigrades and rotifers were identified to the phylum level, nematodes were identified to genus (Scottnema, Eudorylaimus, and Plectus) and as living or dead, life stage (juveniles or adults), and sex. Soil gravimetric moisture was measured by weighing 50 g subsamples before and after oven drying at 105°C for 24 h. Invertebrate abundances were assessed as the number of individual animals per kilogram of dry soil.Reference Cited: Freckman, D. W., & Virginia, R. A. (1993). Extraction of nematodes from Dry Valley Antarctic soils. Polar Biology, 13(7), 483–487. https://doi.org/10.1007/BF00233139 Metadata Access Constraints: none Metadata Use Constraints: none annually McMurdo Dry Valleys LTER http://mcmlter.org/ pointOfContact