Affordable Access

Access to the full text

Variation in zoobenthic blue carbon in the Arctic's Barents Sea shelf sediments

Authors
  • Souster, T. A.1, 2
  • Barnes, D. K. A.2
  • Hopkins, J.3
  • 1 Ulster University, Coleraine Campus, Coleraine
  • 2 Biological Sciences, British Antarctic Survey, UKRI, Cambridge
  • 3 Marine Physics and Ocean Climate, National Oceanography Centre, Liverpool
Type
Published Article
Journal
Philosophical Transactions of The Royal Society A Mathematical Physical and Engineering Sciences
Publisher
The Royal Society
Publication Date
Aug 31, 2020
Volume
378
Issue
2181
Identifiers
DOI: 10.1098/rsta.2019.0362
PMID: 32862809
PMCID: PMC7481665
Source
PubMed Central
Keywords
License
Green

Abstract

The flow of carbon from atmosphere to sediment fauna and sediments reduces atmospheric CO2, which in turn reduces warming. Here, during the Changing Arctic Ocean Seafloor programme, we use comparable methods to those used in the Antarctic (vertical, calibrated camera drops and trawl-collected specimens) to calculate the standing stock of zoobenthic carbon throughout the Barents Sea. The highest numbers of morphotypes, functional groups and individuals were found in the northernmost sites (80–81.3° N, 29–30° E). Ordination (non-metric multidimensional scaling) suggested a cline of faunal transition from south to north. The functional group dominance differed across all six sites, despite all being apparently similar muds. Of the environmental variables we measured, only water current speed could significantly explain any of our spatial carbon differences. We found no obvious relationship with sea ice loss and thus no evidence of Arctic blue carbon–climate feedback. Blue carbon in the Barents Sea can be comparable with the highest levels in Antarctic shelf sediments. This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning'.

Report this publication

Statistics

Seen <100 times