Arctic seals as tracers of environmental and ecological change
Knowledge of species trophic position (TP) is an essential component of ecosystem management. Determining TP from stable nitrogen isotopes (δ 15 N) in predators requires understanding how these tracers vary across environments and how they relate to predator isotope composition. We used two seal spe...
Published in: | Limnology and Oceanography Letters |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/arctic-seals-as-tracers-of-environmental-and-ecological-change(a487684b-ec04-4146-8740-37d0898cc3d5).html https://doi.org/10.1002/lol2.10176 https://research-repository.st-andrews.ac.uk/bitstream/10023/21049/1/delaVega_2020_LOl_Artic_seals_CC.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/a487684b-ec04-4146-8740-37d0898cc3d5 2024-06-23T07:48:24+00:00 Arctic seals as tracers of environmental and ecological change de la Vega, Camille Mahaffey, Claire Tuerena, Robyn E. Yurkowski, David J. Ferguson, Steven H. Stenson, Garry B. Nordøy, Erling S. Haug, Tore Biuw, Martin Smout, Sophie Hopkins, Jo Tagliabue, Alessandro Jeffreys, Rachel M. 2020-11-12 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/arctic-seals-as-tracers-of-environmental-and-ecological-change(a487684b-ec04-4146-8740-37d0898cc3d5).html https://doi.org/10.1002/lol2.10176 https://research-repository.st-andrews.ac.uk/bitstream/10023/21049/1/delaVega_2020_LOl_Artic_seals_CC.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/arctic-seals-as-tracers-of-environmental-and-ecological-change(a487684b-ec04-4146-8740-37d0898cc3d5).html info:eu-repo/semantics/openAccess de la Vega , C , Mahaffey , C , Tuerena , R E , Yurkowski , D J , Ferguson , S H , Stenson , G B , Nordøy , E S , Haug , T , Biuw , M , Smout , S , Hopkins , J , Tagliabue , A & Jeffreys , R M 2020 , ' Arctic seals as tracers of environmental and ecological change ' , Limnology and Oceanography Letters , vol. Early View . https://doi.org/10.1002/lol2.10176 article 2020 ftunstandrewcris https://doi.org/10.1002/lol2.10176 2024-06-13T01:13:04Z Knowledge of species trophic position (TP) is an essential component of ecosystem management. Determining TP from stable nitrogen isotopes (δ 15 N) in predators requires understanding how these tracers vary across environments and how they relate to predator isotope composition. We used two seal species as a model for determining TP across large spatial scales in the Arctic. δ 15 N in seawater nitrate (δ 15 N NO3 ) and seal muscle amino acids (δ 15 N AA ) were determined to independently characterize the base of the food web and the TP of harp and ringed seals, demonstrating a direct link between δ 15 N NO3 and δ 15 N AA . Our results show that the spatial variation in δ 15 N AA in seals reflects the δ 15 N NO3 end members in Pacific vs. Atlantic waters. This study provides a reference for best practice on accurate comparison of TP in predators and as such, provides a framework to assess the impact of environmental and human-induced changes on ecosystems at pan-Arctic scales. Article in Journal/Newspaper Arctic Arctic University of St Andrews: Research Portal Arctic Pacific Limnology and Oceanography Letters 6 1 24 32 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
Knowledge of species trophic position (TP) is an essential component of ecosystem management. Determining TP from stable nitrogen isotopes (δ 15 N) in predators requires understanding how these tracers vary across environments and how they relate to predator isotope composition. We used two seal species as a model for determining TP across large spatial scales in the Arctic. δ 15 N in seawater nitrate (δ 15 N NO3 ) and seal muscle amino acids (δ 15 N AA ) were determined to independently characterize the base of the food web and the TP of harp and ringed seals, demonstrating a direct link between δ 15 N NO3 and δ 15 N AA . Our results show that the spatial variation in δ 15 N AA in seals reflects the δ 15 N NO3 end members in Pacific vs. Atlantic waters. This study provides a reference for best practice on accurate comparison of TP in predators and as such, provides a framework to assess the impact of environmental and human-induced changes on ecosystems at pan-Arctic scales. |
format |
Article in Journal/Newspaper |
author |
de la Vega, Camille Mahaffey, Claire Tuerena, Robyn E. Yurkowski, David J. Ferguson, Steven H. Stenson, Garry B. Nordøy, Erling S. Haug, Tore Biuw, Martin Smout, Sophie Hopkins, Jo Tagliabue, Alessandro Jeffreys, Rachel M. |
spellingShingle |
de la Vega, Camille Mahaffey, Claire Tuerena, Robyn E. Yurkowski, David J. Ferguson, Steven H. Stenson, Garry B. Nordøy, Erling S. Haug, Tore Biuw, Martin Smout, Sophie Hopkins, Jo Tagliabue, Alessandro Jeffreys, Rachel M. Arctic seals as tracers of environmental and ecological change |
author_facet |
de la Vega, Camille Mahaffey, Claire Tuerena, Robyn E. Yurkowski, David J. Ferguson, Steven H. Stenson, Garry B. Nordøy, Erling S. Haug, Tore Biuw, Martin Smout, Sophie Hopkins, Jo Tagliabue, Alessandro Jeffreys, Rachel M. |
author_sort |
de la Vega, Camille |
title |
Arctic seals as tracers of environmental and ecological change |
title_short |
Arctic seals as tracers of environmental and ecological change |
title_full |
Arctic seals as tracers of environmental and ecological change |
title_fullStr |
Arctic seals as tracers of environmental and ecological change |
title_full_unstemmed |
Arctic seals as tracers of environmental and ecological change |
title_sort |
arctic seals as tracers of environmental and ecological change |
publishDate |
2020 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/arctic-seals-as-tracers-of-environmental-and-ecological-change(a487684b-ec04-4146-8740-37d0898cc3d5).html https://doi.org/10.1002/lol2.10176 https://research-repository.st-andrews.ac.uk/bitstream/10023/21049/1/delaVega_2020_LOl_Artic_seals_CC.pdf |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Arctic |
genre_facet |
Arctic Arctic |
op_source |
de la Vega , C , Mahaffey , C , Tuerena , R E , Yurkowski , D J , Ferguson , S H , Stenson , G B , Nordøy , E S , Haug , T , Biuw , M , Smout , S , Hopkins , J , Tagliabue , A & Jeffreys , R M 2020 , ' Arctic seals as tracers of environmental and ecological change ' , Limnology and Oceanography Letters , vol. Early View . https://doi.org/10.1002/lol2.10176 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/arctic-seals-as-tracers-of-environmental-and-ecological-change(a487684b-ec04-4146-8740-37d0898cc3d5).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/lol2.10176 |
container_title |
Limnology and Oceanography Letters |
container_volume |
6 |
container_issue |
1 |
container_start_page |
24 |
op_container_end_page |
32 |
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1802638826987847680 |