Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations
The consistency of the global declining trend of Atlantic salmon (Salmo salar) populations suggests that climate-driven reduced survival and growth at sea are the main driving factors. The southernmost populations have experienced the greatest declines, consistent with harsher conditions in natal fr...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | https://hdl.handle.net/11250/3057890 https://doi.org/10.1139/cjfas-2018-0297 |
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ftninstnf:oai:brage.nina.no:11250/3057890 2023-05-15T15:28:48+02:00 Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations Almodóvar, Ana Ayllón, Daniel Nicola, Graciela G. Jonsson, Bror Elvira, Benigno Southernmost Europe, Spain 2019 application/pdf https://hdl.handle.net/11250/3057890 https://doi.org/10.1139/cjfas-2018-0297 eng eng Spanish Ministry of Science and Innovation: CGL2012-36049 Canadian Journal of Fisheries and Aquatic Sciences. 2019, 76 1581-1595. urn:issn:0706-652X https://hdl.handle.net/11250/3057890 https://doi.org/10.1139/cjfas-2018-0297 cristin:1718799 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2019 The Authors 1581-1595 76 Canadian Journal of Fisheries and Aquatic Sciences Atlantic salmon VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Peer reviewed Journal article 2019 ftninstnf https://doi.org/10.1139/cjfas-2018-0297 2023-03-15T23:46:25Z The consistency of the global declining trend of Atlantic salmon (Salmo salar) populations suggests that climate-driven reduced survival and growth at sea are the main driving factors. The southernmost populations have experienced the greatest declines, consistent with harsher conditions in natal fresh waters. We analyzed temporal trends in Spanish Atlantic salmon, important food organisms at sea, and climatic variables in the breeding (fresh water) and feeding (marine) salmon areas from 1950 onwards to elucidate drivers of declining patterns. Salmon abundance dropped abruptly in 1970–1971, plausibly linked to widespread overfishing coincident with incipient changes in the marine food webs and freshwater hydrology. A major regime shift in biophysical conditions throughout the North Atlantic salmon feeding grounds occurred in 1986–1987, driven by the concurrence of an abrupt acceleration in the anthropogenic warming trend and the warm phase of the Atlantic Multidecadal Oscillation. This regime shift may be the proximate cause of the collapse of Spanish salmon observed in 1988–1989, which kept declining in parallel to trends of ever-increasing ocean and freshwater temperatures, decreasing river flows, and poorer marine trophic conditions. publishedVersion Article in Journal/Newspaper Atlantic salmon North Atlantic Salmo salar Norwegian Institute for Nature Research: Brage NINA Canadian Journal of Fisheries and Aquatic Sciences 76 9 1581 1595 |
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Norwegian Institute for Nature Research: Brage NINA |
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language |
English |
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Atlantic salmon VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
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Atlantic salmon VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Almodóvar, Ana Ayllón, Daniel Nicola, Graciela G. Jonsson, Bror Elvira, Benigno Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations |
topic_facet |
Atlantic salmon VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
The consistency of the global declining trend of Atlantic salmon (Salmo salar) populations suggests that climate-driven reduced survival and growth at sea are the main driving factors. The southernmost populations have experienced the greatest declines, consistent with harsher conditions in natal fresh waters. We analyzed temporal trends in Spanish Atlantic salmon, important food organisms at sea, and climatic variables in the breeding (fresh water) and feeding (marine) salmon areas from 1950 onwards to elucidate drivers of declining patterns. Salmon abundance dropped abruptly in 1970–1971, plausibly linked to widespread overfishing coincident with incipient changes in the marine food webs and freshwater hydrology. A major regime shift in biophysical conditions throughout the North Atlantic salmon feeding grounds occurred in 1986–1987, driven by the concurrence of an abrupt acceleration in the anthropogenic warming trend and the warm phase of the Atlantic Multidecadal Oscillation. This regime shift may be the proximate cause of the collapse of Spanish salmon observed in 1988–1989, which kept declining in parallel to trends of ever-increasing ocean and freshwater temperatures, decreasing river flows, and poorer marine trophic conditions. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Almodóvar, Ana Ayllón, Daniel Nicola, Graciela G. Jonsson, Bror Elvira, Benigno |
author_facet |
Almodóvar, Ana Ayllón, Daniel Nicola, Graciela G. Jonsson, Bror Elvira, Benigno |
author_sort |
Almodóvar, Ana |
title |
Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations |
title_short |
Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations |
title_full |
Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations |
title_fullStr |
Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations |
title_full_unstemmed |
Climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost European Atlantic salmon populations |
title_sort |
climate-driven biophysical changes in feeding and breeding environments explain the decline of southernmost european atlantic salmon populations |
publishDate |
2019 |
url |
https://hdl.handle.net/11250/3057890 https://doi.org/10.1139/cjfas-2018-0297 |
op_coverage |
Southernmost Europe, Spain |
genre |
Atlantic salmon North Atlantic Salmo salar |
genre_facet |
Atlantic salmon North Atlantic Salmo salar |
op_source |
1581-1595 76 Canadian Journal of Fisheries and Aquatic Sciences |
op_relation |
Spanish Ministry of Science and Innovation: CGL2012-36049 Canadian Journal of Fisheries and Aquatic Sciences. 2019, 76 1581-1595. urn:issn:0706-652X https://hdl.handle.net/11250/3057890 https://doi.org/10.1139/cjfas-2018-0297 cristin:1718799 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2019 The Authors |
op_doi |
https://doi.org/10.1139/cjfas-2018-0297 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
76 |
container_issue |
9 |
container_start_page |
1581 |
op_container_end_page |
1595 |
_version_ |
1766359152906469376 |