Multi‐decadal environmental change in the Barents Sea recorded by seal teeth
Abstract Multiple environmental forcings, such as warming and changes in ocean circulation and nutrient supply, are affecting the base of Arctic marine ecosystems, with cascading effects on the entire food web through bottom‐up control. Stable nitrogen isotopes (δ 15 N) can be used to detect and unr...
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Online Access: | http://dx.doi.org/10.1111/gcb.16138 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16138 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16138 |
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crwiley:10.1111/gcb.16138 2024-06-02T08:01:04+00:00 Multi‐decadal environmental change in the Barents Sea recorded by seal teeth de la Vega, Camille Buchanan, Pearse J. Tagliabue, Alessandro Hopkins, Joanne E. Jeffreys, Rachel M. Frie, Anne Kirstine Biuw, Martin Kershaw, Joanna Grecian, James Norman, Louisa Smout, Sophie Haug, Tore Mahaffey, Claire Natural Environment Research Council 2022 http://dx.doi.org/10.1111/gcb.16138 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16138 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16138 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Global Change Biology volume 28, issue 9, page 3054-3065 ISSN 1354-1013 1365-2486 journal-article 2022 crwiley https://doi.org/10.1111/gcb.16138 2024-05-03T11:03:54Z Abstract Multiple environmental forcings, such as warming and changes in ocean circulation and nutrient supply, are affecting the base of Arctic marine ecosystems, with cascading effects on the entire food web through bottom‐up control. Stable nitrogen isotopes (δ 15 N) can be used to detect and unravel the impact of these forcings on this unique ecosystem, if the many processes that affect the δ 15 N values are constrained. Combining unique 60‐year records from compound specific δ 15 N biomarkers on harp seal teeth alongside state‐of‐the‐art ocean modelling, we observed a significant decline in the δ 15 N values at the base of the Barents Sea food web from 1951 to 2012. This strong and persistent decadal trend emerges due to the combination of anthropogenic atmospheric nitrogen deposition in the Atlantic, increased northward transport of Atlantic water through Arctic gateways and local feedbacks from increasing Arctic primary production. Our results suggest that the Arctic ecosystem has been responding to anthropogenically induced local and remote drivers, linked to changing ocean biology, chemistry and physics, for at least 60 years. Accounting for these trends in δ 15 N values at the base of the food web is essential to accurately detect ecosystem restructuring in this rapidly changing environment. Article in Journal/Newspaper Arctic Barents Sea Harp Seal Wiley Online Library Arctic Barents Sea Global Change Biology |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Multiple environmental forcings, such as warming and changes in ocean circulation and nutrient supply, are affecting the base of Arctic marine ecosystems, with cascading effects on the entire food web through bottom‐up control. Stable nitrogen isotopes (δ 15 N) can be used to detect and unravel the impact of these forcings on this unique ecosystem, if the many processes that affect the δ 15 N values are constrained. Combining unique 60‐year records from compound specific δ 15 N biomarkers on harp seal teeth alongside state‐of‐the‐art ocean modelling, we observed a significant decline in the δ 15 N values at the base of the Barents Sea food web from 1951 to 2012. This strong and persistent decadal trend emerges due to the combination of anthropogenic atmospheric nitrogen deposition in the Atlantic, increased northward transport of Atlantic water through Arctic gateways and local feedbacks from increasing Arctic primary production. Our results suggest that the Arctic ecosystem has been responding to anthropogenically induced local and remote drivers, linked to changing ocean biology, chemistry and physics, for at least 60 years. Accounting for these trends in δ 15 N values at the base of the food web is essential to accurately detect ecosystem restructuring in this rapidly changing environment. |
author2 |
Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
de la Vega, Camille Buchanan, Pearse J. Tagliabue, Alessandro Hopkins, Joanne E. Jeffreys, Rachel M. Frie, Anne Kirstine Biuw, Martin Kershaw, Joanna Grecian, James Norman, Louisa Smout, Sophie Haug, Tore Mahaffey, Claire |
spellingShingle |
de la Vega, Camille Buchanan, Pearse J. Tagliabue, Alessandro Hopkins, Joanne E. Jeffreys, Rachel M. Frie, Anne Kirstine Biuw, Martin Kershaw, Joanna Grecian, James Norman, Louisa Smout, Sophie Haug, Tore Mahaffey, Claire Multi‐decadal environmental change in the Barents Sea recorded by seal teeth |
author_facet |
de la Vega, Camille Buchanan, Pearse J. Tagliabue, Alessandro Hopkins, Joanne E. Jeffreys, Rachel M. Frie, Anne Kirstine Biuw, Martin Kershaw, Joanna Grecian, James Norman, Louisa Smout, Sophie Haug, Tore Mahaffey, Claire |
author_sort |
de la Vega, Camille |
title |
Multi‐decadal environmental change in the Barents Sea recorded by seal teeth |
title_short |
Multi‐decadal environmental change in the Barents Sea recorded by seal teeth |
title_full |
Multi‐decadal environmental change in the Barents Sea recorded by seal teeth |
title_fullStr |
Multi‐decadal environmental change in the Barents Sea recorded by seal teeth |
title_full_unstemmed |
Multi‐decadal environmental change in the Barents Sea recorded by seal teeth |
title_sort |
multi‐decadal environmental change in the barents sea recorded by seal teeth |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/gcb.16138 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16138 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16138 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Harp Seal |
genre_facet |
Arctic Barents Sea Harp Seal |
op_source |
Global Change Biology volume 28, issue 9, page 3054-3065 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.16138 |
container_title |
Global Change Biology |
_version_ |
1800745318279544832 |