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Macrobenthic assemblages from the methane seeps in six South Georgia troughs collected in 2017

In 2017, the RV METEOR M134 expedition investigated macrobenthic assemblages associated with methane seeps on the South Georgia continental shelf. Six shelf troughs with active methane seepage were sampled to assess species richness, abundance, and environmental conditions. Data were collected from eleven shelf stations, with species richness ranging from 19 to 51 species and abundances from 3,303 to 30,326 individuals per square meter. A total of 103 species were identified, with arthropods (primarily crustaceans) and annelids comprising most of the species richness. Environmental data include methane and sulfate flux, hydrogen sulfide concentrations, and sediment geochemistry. Seep assemblage data is combined with data from non-seep benthic communities from other expeditions.The dataset provides: 1) South Georgia methane seep station locations and environmental data. 2) Macrobenthic species absolute and normalized abundances at seep sites. 3) A combination of seep assemblages with non-seep benthic communities from other expeditions.

Funding:

The fieldwork for this study, was supported by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the priority programme ''Antarctic Research with comparative investigations in Arctic ice areas'' (project-id 40464014) and within the DFG-Research Center/Cluster of Excellence EXC 309 ''The Ocean in the Earth System'' (project-id 49926684). The expedition, titled ''Emissions of free gas around South Georgia: distribution, quantification, and sources for methane ebullition sites in sub-Antarctic waters,'' was supported by MARUM - Center for Marine Environmental Sciences, Research Faculty University of Bremen, and the University of Bremen. Additional support came from the Helmholtz Association (Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven). The cruise was funded by the German Research Foundation (DFG) and the Federal Ministry of Education and Research (BMBF). Katrin Linse is part of the British Antarctic Survey Polar Science for Planet Earth Programme (NC Science), funded by the Natural Environment Research Council (NERC).

Studies around South Georgia were conducted under permit RAP 129/2016 (M134) issued by the Foreign & Commonwealth Office, UK. Macrobenthic faunal sorting was supported by the Natural Environment Research Council through a DEI Internship for Madeline PBC Anderson (via the NERC Diversity, Equity and Inclusion engagement funding) and an IAPETUS2 PhD studentship held by Madeline PBC Anderson (grant reference NE/S007431/1).

Simple

Alternate title
Polar Data Centre (PDC) record GB/NERC/BAS/PDC/02028
Date (Publication)
2025-03-20
Identifier
http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/02028
Custodian
  British Antarctic Survey
High Cross, Madingley Road , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Originator
  NERC EDS UK Polar Data Centre - Anderson, M., Pape, T., & Linse, K.
High Cross, Madingley , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Maintenance and update frequency
unknown Unknown
Keywords
  • NDGO0001
NERC OAI Harvesting
  • NERC_DDC
GCMD Parameter Valids
  • EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
  • EARTH SCIENCE > Oceans > Marine Biology
  • EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates
BAS Free-text keywords
  • South Georgia
  • Sub-Antarctic
  • hydrocarbon seafloor emission
  • macrobenthic
  • methane seep
  • multicorer (MUC) samples
Use limitation
This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
Access constraints
otherRestrictions Other restrictions
Other constraints
This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
Metadata language
EnglishEnglish
Topic category
  • Biota
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Begin date
2017-01-21
End date
2017-02-09
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
Distributor
  Polar Data Centre - British Antarctic Survey
+44 (0)1223 221400
Protocol
http
Name
GET DATA
Function
download Download
Hierarchy level
dataset Dataset

Domain consistency

Measure identification
INSPIRE / Conformity_001

Conformance result

Date
Explanation
See the referenced specification
Pass
No
Statement

NA in Environmental_parameters.csv data - data were not collected

Indet - the abbreviation ''indet.'' was used to denote an indeterminate specimen.

Species were identified to highest taxonomic level possible, and quality checking occurred for consistency in identification. Specialists were contacted to assist in identification for specific taxa.

File identifier
GB_NERC_BAS_PDC_02028 XML
Metadata language
EnglishEnglish
Hierarchy level
dataset Dataset
Date stamp
2025-03-20
Metadata standard name
NERC profile of ISO19115:2003
Metadata standard version
1.0
Point of contact
  British Antarctic Survey
+44 (0)1223 221400
Dataset URI
http://www.antarctica.ac.uk/dms/metadata.php?id=GB/NERC/BAS/PDC/02028
 
 

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