BGS Hosted Metadata
Terrestrial invertebrate water content from Signy Island from 1984 to 1996
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.
Simple
- Date (Creation)
- 2023-05-15
- Date (Revision)
- 2023-05-15
- Date (Publication)
- 2023-05-15
- Date (released)
- 2023-05-15
- Edition
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1.0
- Unique resource identifier
- https://doi.org/10.5285/c890a885-e53c-453c-a1f2-8743166f5e89
- Codespace
-
doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01742
- Codespace
- Other citation details
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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
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role Block, William
Author British Antarctic Survey Convey, Peter
Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Arthropod
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Invertebrate
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Signy
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Terrestrial
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Water stress
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- Place
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Signy Island, South Orkney Islands Antarctica
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Factory Bluffs, Signy Island, South Orkney Islands Antarctica
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Bernsten Point, Signy Island, South Orkney Islands Antarctica
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Elephant Flats, Signy Island, South Orkney Islands Antarctica
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Gourlay Peninsula, Signy Island, South Orkney Islands Antarctica
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/
- Use constraints
- Other restrictions
- Other constraints
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This data is governed by the NERC data policy and supplied under Open Government Licence v.3
- Use constraints
- Other restrictions
- Other constraints
-
There are no access constraints on this dataset.
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Biota
)
- Begin date
- 1984-04-16
- End date
- 1996-06-02
- Supplemental Information
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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.
- Title
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
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Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
-
6.18.3
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Units of distribution
-
bytes
- Transfer size
- 1
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=c890a885-e53c-453c-a1f2-8743166f5e89 Get Data
- Hierarchy level
- Dataset
- Statement
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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'.
Metadata
- File identifier
- c890a885-e53c-453c-a1f2-8743166f5e89 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2023-05-15
- Metadata standard name
-
ISO 19115 Geographic Information - Metadata
- Metadata standard version
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ISO 19115:2003(E)
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
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