Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland
Abstract Historical data on the oceanic distribution and migration routes of southernmost Atlantic salmon Salmo salar populations from Europe are almost non-existent, as no rigorous tagging initiatives have been conducted. Here, we used stable isotope data (δ13C and δ15N) of historic scale collectio...
Published in: | ICES Journal of Marine Science |
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2020
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsz258 http://academic.oup.com/icesjms/article-pdf/77/2/593/32882007/fsz258.pdf |
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croxfordunivpr:10.1093/icesjms/fsz258 2024-09-15T17:55:59+00:00 Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland Almodóvar, Ana Nicola, Graciela G Ayllón, Daniel Trueman, Clive N Davidson, Ian Kennedy, Richard Elvira, Benigno Durif, Caroline Spanish Ministry of Economy and Competitiveness 2020 http://dx.doi.org/10.1093/icesjms/fsz258 http://academic.oup.com/icesjms/article-pdf/77/2/593/32882007/fsz258.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 77, issue 2, page 593-603 ISSN 1054-3139 1095-9289 journal-article 2020 croxfordunivpr https://doi.org/10.1093/icesjms/fsz258 2024-08-05T04:31:48Z Abstract Historical data on the oceanic distribution and migration routes of southernmost Atlantic salmon Salmo salar populations from Europe are almost non-existent, as no rigorous tagging initiatives have been conducted. Here, we used stable isotope data (δ13C and δ15N) of historic scale collections to identify the potential marine feeding areas of the largest salmon population in the Iberian Peninsula. Data were compared with published datasets from Northern Ireland, Wales, south England, and northeast UK coast, which correspond to series between 15- and 33-year long within the time period from 1958 to 2009. Temporal covariation in sea surface temperature, primary productivity, and δ13C values suggests that feeding areas of Iberian salmon are located around Greenland, both in the Labrador and the Irminger seas. Furthermore, δ13C values of Atlantic salmon from Canadian rivers reported in the literature are similar to those found in individuals from Spanish rivers. Our results suggest that Iberian salmon follow a westerly migration route towards Greenland instead of following the easterly branch of the North Atlantic current into the Norwegian Sea. Characterization of feeding patterns and migration routes might help to understand the causes of ongoing population decline and establish targeted conservation programmes for threatened Iberian salmon. Article in Journal/Newspaper Atlantic salmon Greenland north atlantic current North Atlantic Norwegian Sea Salmo salar Oxford University Press ICES Journal of Marine Science 77 2 593 603 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Historical data on the oceanic distribution and migration routes of southernmost Atlantic salmon Salmo salar populations from Europe are almost non-existent, as no rigorous tagging initiatives have been conducted. Here, we used stable isotope data (δ13C and δ15N) of historic scale collections to identify the potential marine feeding areas of the largest salmon population in the Iberian Peninsula. Data were compared with published datasets from Northern Ireland, Wales, south England, and northeast UK coast, which correspond to series between 15- and 33-year long within the time period from 1958 to 2009. Temporal covariation in sea surface temperature, primary productivity, and δ13C values suggests that feeding areas of Iberian salmon are located around Greenland, both in the Labrador and the Irminger seas. Furthermore, δ13C values of Atlantic salmon from Canadian rivers reported in the literature are similar to those found in individuals from Spanish rivers. Our results suggest that Iberian salmon follow a westerly migration route towards Greenland instead of following the easterly branch of the North Atlantic current into the Norwegian Sea. Characterization of feeding patterns and migration routes might help to understand the causes of ongoing population decline and establish targeted conservation programmes for threatened Iberian salmon. |
author2 |
Durif, Caroline Spanish Ministry of Economy and Competitiveness |
format |
Article in Journal/Newspaper |
author |
Almodóvar, Ana Nicola, Graciela G Ayllón, Daniel Trueman, Clive N Davidson, Ian Kennedy, Richard Elvira, Benigno |
spellingShingle |
Almodóvar, Ana Nicola, Graciela G Ayllón, Daniel Trueman, Clive N Davidson, Ian Kennedy, Richard Elvira, Benigno Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland |
author_facet |
Almodóvar, Ana Nicola, Graciela G Ayllón, Daniel Trueman, Clive N Davidson, Ian Kennedy, Richard Elvira, Benigno |
author_sort |
Almodóvar, Ana |
title |
Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland |
title_short |
Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland |
title_full |
Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland |
title_fullStr |
Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland |
title_full_unstemmed |
Stable isotopes suggest the location of marine feeding grounds of South European Atlantic salmon in Greenland |
title_sort |
stable isotopes suggest the location of marine feeding grounds of south european atlantic salmon in greenland |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/icesjms/fsz258 http://academic.oup.com/icesjms/article-pdf/77/2/593/32882007/fsz258.pdf |
genre |
Atlantic salmon Greenland north atlantic current North Atlantic Norwegian Sea Salmo salar |
genre_facet |
Atlantic salmon Greenland north atlantic current North Atlantic Norwegian Sea Salmo salar |
op_source |
ICES Journal of Marine Science volume 77, issue 2, page 593-603 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsz258 |
container_title |
ICES Journal of Marine Science |
container_volume |
77 |
container_issue |
2 |
container_start_page |
593 |
op_container_end_page |
603 |
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1810432205230440448 |