Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison
Although mercury (Hg) in polar ecosystems has been well-studied, there is little information on Hg in the Arctic during low-productivity seasons like the polar night. We quantified Hg concentrations, carbon, and nitrogen stable isotope ratios (δ13C and δ15N) in the muscle of polar cod (Boreogadus sa...
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ftoslouniv:oai:www.duo.uio.no:10852/90174 2024-09-30T14:28:09+00:00 Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison Gopakumar, Anjali Giebichenstein, Julia Raskhozheva, Evgeniia Borgå, Katrine 2021-06-03T19:03:54Z http://hdl.handle.net/10852/90174 http://urn.nb.no/URN:NBN:no-92782 https://doi.org/10.1016/j.marpolbul.2021.112501 EN eng NFR/276730 http://urn.nb.no/URN:NBN:no-92782 Gopakumar, Anjali Giebichenstein, Julia Raskhozheva, Evgeniia Borgå, Katrine . Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison. Marine Pollution Bulletin. 2021, 169, 1-8 http://hdl.handle.net/10852/90174 1913627 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine Pollution Bulletin&rft.volume=169&rft.spage=1&rft.date=2021 Marine Pollution Bulletin 169 https://doi.org/10.1016/j.marpolbul.2021.112501 URN:NBN:no-92782 Fulltext https://www.duo.uio.no/bitstream/handle/10852/90174/1/Mercury%2Bin%2BBarents%2BSea%2Bfish-1-s2.0-S0025326X2100535X-main.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 0025-326X Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.1016/j.marpolbul.2021.112501 2024-09-12T05:44:04Z Although mercury (Hg) in polar ecosystems has been well-studied, there is little information on Hg in the Arctic during low-productivity seasons like the polar night. We quantified Hg concentrations, carbon, and nitrogen stable isotope ratios (δ13C and δ15N) in the muscle of polar cod (Boreogadus saida), Atlantic cod (Gadus morhua), and capelin (Mallotus villosus) sampled from the North-West and North-East Barents Sea during November–December 2019. Hg concentrations varied between species (14–175 ng/g dw), dependent on region, but were well below the toxicity threshold for fish health and the EU-accepted threshold for human consumption. Interspecific differences were observed only in the North-East region, with Atlantic cod having highest Hg concentrations, explained by its larger size, higher trophic position and benthopelagic feeding. Spatial differences in polar cod with higher Hg concentrations in the North-East than the North-West were likely due to a combination of differences in food web structure and Hg exposure. Article in Journal/Newspaper Arctic Arctic atlantic cod Barents Sea Boreogadus saida Gadus morhua polar cod polar night Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Barents Sea Marine Pollution Bulletin 169 112501 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Although mercury (Hg) in polar ecosystems has been well-studied, there is little information on Hg in the Arctic during low-productivity seasons like the polar night. We quantified Hg concentrations, carbon, and nitrogen stable isotope ratios (δ13C and δ15N) in the muscle of polar cod (Boreogadus saida), Atlantic cod (Gadus morhua), and capelin (Mallotus villosus) sampled from the North-West and North-East Barents Sea during November–December 2019. Hg concentrations varied between species (14–175 ng/g dw), dependent on region, but were well below the toxicity threshold for fish health and the EU-accepted threshold for human consumption. Interspecific differences were observed only in the North-East region, with Atlantic cod having highest Hg concentrations, explained by its larger size, higher trophic position and benthopelagic feeding. Spatial differences in polar cod with higher Hg concentrations in the North-East than the North-West were likely due to a combination of differences in food web structure and Hg exposure. |
format |
Article in Journal/Newspaper |
author |
Gopakumar, Anjali Giebichenstein, Julia Raskhozheva, Evgeniia Borgå, Katrine |
spellingShingle |
Gopakumar, Anjali Giebichenstein, Julia Raskhozheva, Evgeniia Borgå, Katrine Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison |
author_facet |
Gopakumar, Anjali Giebichenstein, Julia Raskhozheva, Evgeniia Borgå, Katrine |
author_sort |
Gopakumar, Anjali |
title |
Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison |
title_short |
Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison |
title_full |
Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison |
title_fullStr |
Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison |
title_full_unstemmed |
Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison |
title_sort |
mercury in barents sea fish in the arctic polar night: species and spatial comparison |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/90174 http://urn.nb.no/URN:NBN:no-92782 https://doi.org/10.1016/j.marpolbul.2021.112501 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Arctic atlantic cod Barents Sea Boreogadus saida Gadus morhua polar cod polar night |
genre_facet |
Arctic Arctic atlantic cod Barents Sea Boreogadus saida Gadus morhua polar cod polar night |
op_source |
0025-326X |
op_relation |
NFR/276730 http://urn.nb.no/URN:NBN:no-92782 Gopakumar, Anjali Giebichenstein, Julia Raskhozheva, Evgeniia Borgå, Katrine . Mercury in Barents Sea fish in the Arctic polar night: Species and spatial comparison. Marine Pollution Bulletin. 2021, 169, 1-8 http://hdl.handle.net/10852/90174 1913627 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine Pollution Bulletin&rft.volume=169&rft.spage=1&rft.date=2021 Marine Pollution Bulletin 169 https://doi.org/10.1016/j.marpolbul.2021.112501 URN:NBN:no-92782 Fulltext https://www.duo.uio.no/bitstream/handle/10852/90174/1/Mercury%2Bin%2BBarents%2BSea%2Bfish-1-s2.0-S0025326X2100535X-main.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1016/j.marpolbul.2021.112501 |
container_title |
Marine Pollution Bulletin |
container_volume |
169 |
container_start_page |
112501 |
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1811633945453789184 |