Multi‐decadal environmental change in the Barents Sea recorded by seal teeth
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 (δ15N) can be used to detect and unravel the im...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/532604/ https://nora.nerc.ac.uk/id/eprint/532604/1/Global%20Change%20Biology%20-%202022%20-%20de%20la%20Vega%20-%20Multi%E2%80%90decadal%20environmental%20change%20in%20the%20Barents%20Sea%20recorded%20by%20seal%20teeth.pdf https://doi.org/10.1111/gcb.16138 |
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ftnerc:oai:nora.nerc.ac.uk:532604 2023-05-15T14:46:36+02:00 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 2022-02-24 text http://nora.nerc.ac.uk/id/eprint/532604/ https://nora.nerc.ac.uk/id/eprint/532604/1/Global%20Change%20Biology%20-%202022%20-%20de%20la%20Vega%20-%20Multi%E2%80%90decadal%20environmental%20change%20in%20the%20Barents%20Sea%20recorded%20by%20seal%20teeth.pdf https://doi.org/10.1111/gcb.16138 en eng https://nora.nerc.ac.uk/id/eprint/532604/1/Global%20Change%20Biology%20-%202022%20-%20de%20la%20Vega%20-%20Multi%E2%80%90decadal%20environmental%20change%20in%20the%20Barents%20Sea%20recorded%20by%20seal%20teeth.pdf 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. 2022 Multi‐decadal environmental change in the Barents Sea recorded by seal teeth. Global Change Biology, 28 (9). 3054-3065. https://doi.org/10.1111/gcb.16138 <https://doi.org/10.1111/gcb.16138> cc_by_4 CC-BY Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.1111/gcb.16138 2023-02-04T19:53:18Z 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 (δ15N) can be used to detect and unravel the impact of these forcings on this unique ecosystem, if the many processes that affect the δ15N values are constrained. Combining unique 60-year records from compound specific δ15N biomarkers on harp seal teeth alongside state-of-the-art ocean modelling, we observed a significant decline in the δ15N 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 δ15N 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 Natural Environment Research Council: NERC Open Research Archive Arctic Barents Sea Global Change Biology 28 9 3054 3065 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
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 (δ15N) can be used to detect and unravel the impact of these forcings on this unique ecosystem, if the many processes that affect the δ15N values are constrained. Combining unique 60-year records from compound specific δ15N biomarkers on harp seal teeth alongside state-of-the-art ocean modelling, we observed a significant decline in the δ15N 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 δ15N values at the base of the food web is essential to accurately detect ecosystem restructuring in this rapidly changing environment. |
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 |
publishDate |
2022 |
url |
http://nora.nerc.ac.uk/id/eprint/532604/ https://nora.nerc.ac.uk/id/eprint/532604/1/Global%20Change%20Biology%20-%202022%20-%20de%20la%20Vega%20-%20Multi%E2%80%90decadal%20environmental%20change%20in%20the%20Barents%20Sea%20recorded%20by%20seal%20teeth.pdf https://doi.org/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_relation |
https://nora.nerc.ac.uk/id/eprint/532604/1/Global%20Change%20Biology%20-%202022%20-%20de%20la%20Vega%20-%20Multi%E2%80%90decadal%20environmental%20change%20in%20the%20Barents%20Sea%20recorded%20by%20seal%20teeth.pdf 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. 2022 Multi‐decadal environmental change in the Barents Sea recorded by seal teeth. Global Change Biology, 28 (9). 3054-3065. https://doi.org/10.1111/gcb.16138 <https://doi.org/10.1111/gcb.16138> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/gcb.16138 |
container_title |
Global Change Biology |
container_volume |
28 |
container_issue |
9 |
container_start_page |
3054 |
op_container_end_page |
3065 |
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1766317800316469248 |