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 (δ 15 N) can be used to detect and unravel the...
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Online Access: | http://livrepository.liverpool.ac.uk/3151828/ https://doi.org/10.1111/gcb.16138 |
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ftunivliverpool:oai:livrepository.liverpool.ac.uk:3151828 2023-05-15T14:48:12+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 http://livrepository.liverpool.ac.uk/3151828/ https://doi.org/10.1111/gcb.16138 eng eng Wiley Collapse authors list. de la Vega, Camille, Buchanan, Pearse J orcid:0000-0001-7142-882X , Tagliabue, Alessandro orcid:0000-0002-3572-3634 , Hopkins, Joanne E, Jeffreys, Rachel M orcid:0000-0001-6114-2334 , Frie, Anne Kirstine, Biuw, Martin, Kershaw, Joanna, Grecian, James, Norman, Louisa et al (show 3 more authors) , Smout, Sophie, Haug, Tore and Mahaffey, Claire orcid:0000-0002-4215-7271 (2022) Multi-decadal environmental change in the Barents Sea recorded by seal teeth. GLOBAL CHANGE BIOLOGY, 28 (9). pp. 3054-3065. Article NonPeerReviewed 2022 ftunivliverpool https://doi.org/10.1111/gcb.16138 2023-01-20T00:15:12Z 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 The University of Liverpool Repository Arctic Barents Sea Global Change Biology 28 9 3054 3065 |
institution |
Open Polar |
collection |
The University of Liverpool Repository |
op_collection_id |
ftunivliverpool |
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 (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. |
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://livrepository.liverpool.ac.uk/3151828/ 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 |
Collapse authors list. de la Vega, Camille, Buchanan, Pearse J orcid:0000-0001-7142-882X , Tagliabue, Alessandro orcid:0000-0002-3572-3634 , Hopkins, Joanne E, Jeffreys, Rachel M orcid:0000-0001-6114-2334 , Frie, Anne Kirstine, Biuw, Martin, Kershaw, Joanna, Grecian, James, Norman, Louisa et al (show 3 more authors) , Smout, Sophie, Haug, Tore and Mahaffey, Claire orcid:0000-0002-4215-7271 (2022) Multi-decadal environmental change in the Barents Sea recorded by seal teeth. GLOBAL CHANGE BIOLOGY, 28 (9). pp. 3054-3065. |
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 |
_version_ |
1766319297338015744 |