c890a885-e53c-453c-a1f2-8743166f5e89 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2023-05-15 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Terrestrial invertebrate water content from Signy Island from 1984 to 1996 2023-05-15 creation 2023-05-15 revision 2023-05-15 publication 2023-05-15 released 1.0 https://doi.org/10.5285/c890a885-e53c-453c-a1f2-8743166f5e89 doi GB/NERC/BAS/PDC/01742 https://data.bas.ac.uk/ Please cite this item as: Block, W., & Convey, P. (2023). Terrestrial invertebrate water content from Signy Island from 1984 to 1996 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/c890a885-e53c-453c-a1f2-8743166f5e89 This dataset comprises data on the water content of various terrestrial invertebrates on Signy Island, from 1984 to 1996. Species include native mites (Gamasellus racovitzai, Halozetes belgicae, Alaskozetes antarcticus, Stereotydeus villosus), springtails (Archisotoma brucei, Parisotoma (now Folsomotoma) octooculata, Cryptopygus antarcticus) and the non-native midge (Eretmoptera murphyi). Live samples were collected monthly at Bernsten Point, Elephant Flats, Gourlay Peninsula and Factory Bluff over both the summer and winter season. This data were collected as part of a long-term monitoring programme on terrestrial habitats in the maritime Antarctic. This dataset was supported with NERC core funding to BAS. No credit. completed Block, William Researcher author Convey, Peter British Antarctic Survey Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Biosphere > Ecological Dynamics > Survival EARTH SCIENCE > Biosphere > Zoology > Invertebrates EARTH SCIENCE > Biosphere > Ecological Dynamics theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Arthropod Invertebrate Signy Terrestrial Water stress theme Signy Island, South Orkney Islands Antarctica Factory Bluffs, Signy Island, South Orkney Islands Antarctica Bernsten Point, Signy Island, South Orkney Islands Antarctica Elephant Flats, Signy Island, South Orkney Islands Antarctica Gourlay Peninsula, Signy Island, South Orkney Islands Antarctica place Habitats and biotopes theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions This data is governed by the NERC data policy and supplied under Open Government Licence v.3 otherRestrictions There are no access constraints on this dataset. url url crossReference textTable eng utf8 biota -45.58417 -45.58417 -60.72935 -60.72935 1984-04-16 1996-06-02 It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor bytes 1 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=c890a885-e53c-453c-a1f2-8743166f5e89 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Monthly sampling was carried out for seven species of soil arthropods (four species of Acari, two Collembola, 1 Diptera) over the year. Four species of Acari and three species of Collembola were collected at Bernsten Point, Elephant Flats and Gourlay Peninsula. The eighth species, Diptera, was collected at the base of Factory Bluffs. The invertebrates were collected by hand from the surfaces of rocks embedded in soil or vegetation. Samples were kept at ambient temperature during transport to the laboratory located at the base on Signy Island. Adults of three larger and more robust mite species were then separated (A. antarcticus, H. belgicae, G. racovitzai), while the smaller S. villosus and the three springtails were not identified to life stage. Only larvae of the chironomidmidge were collected. Over the study period both a Cahn gram electrobalance and a Sartorius electrobalance were used, the former sensitive to approximately 1 ng, the latter to 0.2 ng. Fresh and dry mass were obtained (dry mass obtained after drying at 60 degrees Celsius). For the first four years of the study, animals of each species were weighed together (usually 5 replicates). During the following seven years, animals were weighed individually in small aluminium containers. A minimum of 20 animals of each species were weighed monthly. Water content is expressed in the following two ways in the dataset: 1. Water content as a fresh weight percentage (column water_content_fresh_weight_perc) calculated as: water_content_fresh_weight_perc = 100*(fresh_weight_sample_ug - dry_weight_sample_ug)/fresh_weight_sample_ug 2. Dry weight as (column water_content_dry_weight_ug): water_content_dry_weight_g_g-1 = (fresh_weight_sample_ug - dry_weight_sample_ug)/dry_weight_sample_ug Data quality: For the first four years of data collection, limitations on balance equipment meant animals of each species (usually 5 replicates) were weighed together. A small number of monthly samples were not collected as a result of adverse weather conditions. For the periods January 1988 - April 1989 and July - December 1992, no data were obtained due to balance equipment failure. Data flagged during collection and/or analysis as non-normal are denoted with a 'Y' in the column 'data_flag'. asNeeded completed