BGS Hosted Metadata
Body length and maturity stage measurements of Antarctic krill caught during the South Orkneys science cruise JR15004 (2016)
The dataset contains body length and maturity stage measurements of Antarctic krill caught from multiple RMT8 hauls conducted as part of science cruise JR15004 to the South Orkneys in January and February 2016. The measurement followed standard protocols as detailed in Morris et al 1988 and Makarov and Denys 1980. All measurements were made on a random subset of approximately 100-200 individuals per haul. The datasets include measurements made from a total of 11 hauls. The measurements were all made by a single analyst.
The work was carried out as part of NERC Antarctic Logistics and Infrastructure Science funding for Southern Ocean Ecosystems.
Simple
- Date (Creation)
- 2025-06-10
- Date (Revision)
- 2025-06-10
- Date (Publication)
- 2025-06-10
- Date (released)
- 2025-06-10
- Edition
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1.0
- Unique resource identifier
- https://doi.org/10.5285/2733f2ad-e111-4b21-b695-c9452e4548a1
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/02072
- Codespace
- Other citation details
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Please cite this item as: Saunders, R., Fielding, S., & Tarling, G.A. (2025). Body length and maturity stage measurements of Antarctic krill caught during the South Orkneys science cruise JR15004 (2016) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/2733f2ad-e111-4b21-b695-c9452e4548a1
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role British Antarctic Survey Saunders, Ryan Author British Antarctic Survey Fielding, Sophie Author British Antarctic Survey Tarling, Geraint A. Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Antarctic krill
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Euphausia superba
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body length
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maturity
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- Place
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South Orkney Islands Southern Ocean
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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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Data are supplied under Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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None
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Cross reference
- 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
- Environment
- Oceans
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- Begin date
- 2016-02-02
- End date
- 2016-02-15
- 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
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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
- Distributor format
-
Name Version text/csv
- Units of distribution
-
bytes
- Transfer size
- 34816
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=2733f2ad-e111-4b21-b695-c9452e4548a1 Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Krill sampling was carried out during the scientific cruise JR15004 which studied the South Orkney Ecosystem between 15 January - 23 February 2016 on board the RRS James Clark Ross.
Krill were sampled when located using a rectangular midwater trawl net (RMT8; 3 mm mesh).
Krill samples were taken from RMT8 samples where there were sufficient numbers of krill to select 100 decent state specimens for length frequency and maturity.
Measurements of krill body length were obtained from randomly selected sub-samples (100-200 individuals per net), measured as the distance between the front of the eye and the tip of the telson, with measurements rounded down to the nearest millimetre (Morris et al. 1988). Information on sex and maturity status were collected based on the scale of Makarov and Denys (1981) with the nomenclature described by Morris et al. (1988). All measurements and staging was carried out by a single analyst (Ryan Saunders). A total of 11 successful RMT8 hauls were undertaken to ground truth the acoustic observations and inform on population structure, primarily around the northwest shelf-break of the South Orkney Islands.
Data collection:
Krill were captured with a rectangular midwater trawl net (RMT8; 3 mm mesh).
Data quality:
All body length measurements were rounded down to the nearest mm. All were performed by a single analyst (Ryan Saunders) to minimise inter-analyst error and bias.
Net hauls cover a variable distance of between 0.1 and 1 nautical mile.
Metadata
- File identifier
- 2733f2ad-e111-4b21-b695-c9452e4548a1 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2025-06-10
- Metadata standard name
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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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