Predation of Atlantic salmon across ontogenetic stages and impacts on populations
Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review existing literature on Atlantic salmon Salmo salar predation and predator contro...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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2023
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Online Access: | http://dx.doi.org/10.1139/cjfas-2023-0029 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2023-0029 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2023-0029 |
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crcansciencepubl:10.1139/cjfas-2023-0029 2024-09-15T17:56:05+00:00 Predation of Atlantic salmon across ontogenetic stages and impacts on populations Falkegård, Morten Lennox, Robert J. Thorstad, Eva B. Einum, Sigurd Fiske, Peder Garmo, Øyvind A. Garseth, Åse H. Skoglund, Helge Solberg, Monica F. Utne, Kjell R. Vollset, Knut W. Vøllestad, Leif Asbjørn Wennevik, Vidar Forseth, Torbjørn 2023 http://dx.doi.org/10.1139/cjfas-2023-0029 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2023-0029 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2023-0029 en eng Canadian Science Publishing https://creativecommons.org/licenses/by/4.0/deed.en_GB Canadian Journal of Fisheries and Aquatic Sciences ISSN 0706-652X 1205-7533 journal-article 2023 crcansciencepubl https://doi.org/10.1139/cjfas-2023-0029 2024-08-08T04:13:35Z Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review existing literature on Atlantic salmon Salmo salar predation and predator control, as well as general ecological theory on the role of predation in the life cycle of this iconic fish. Many bird, mammal, and fish predators target salmon at different life stages. In healthy salmon populations, predation is likely compensated for by reduced intraspecific competition during the freshwater stage. There is little evidence that predation alone has been an underlying mechanism for driving salmon populations below conservation limits. However, depending on the predator's response to salmon abundance, predation may keep decimated populations from recovering, even when the actual causes of decline have been removed. Under such a scenario, predation control may contribute to recovery, but there are no strong examples that clearly demonstrate the efficacy of managing predators to recover threatened salmon populations, challenging further applications. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review existing literature on Atlantic salmon Salmo salar predation and predator control, as well as general ecological theory on the role of predation in the life cycle of this iconic fish. Many bird, mammal, and fish predators target salmon at different life stages. In healthy salmon populations, predation is likely compensated for by reduced intraspecific competition during the freshwater stage. There is little evidence that predation alone has been an underlying mechanism for driving salmon populations below conservation limits. However, depending on the predator's response to salmon abundance, predation may keep decimated populations from recovering, even when the actual causes of decline have been removed. Under such a scenario, predation control may contribute to recovery, but there are no strong examples that clearly demonstrate the efficacy of managing predators to recover threatened salmon populations, challenging further applications. |
format |
Article in Journal/Newspaper |
author |
Falkegård, Morten Lennox, Robert J. Thorstad, Eva B. Einum, Sigurd Fiske, Peder Garmo, Øyvind A. Garseth, Åse H. Skoglund, Helge Solberg, Monica F. Utne, Kjell R. Vollset, Knut W. Vøllestad, Leif Asbjørn Wennevik, Vidar Forseth, Torbjørn |
spellingShingle |
Falkegård, Morten Lennox, Robert J. Thorstad, Eva B. Einum, Sigurd Fiske, Peder Garmo, Øyvind A. Garseth, Åse H. Skoglund, Helge Solberg, Monica F. Utne, Kjell R. Vollset, Knut W. Vøllestad, Leif Asbjørn Wennevik, Vidar Forseth, Torbjørn Predation of Atlantic salmon across ontogenetic stages and impacts on populations |
author_facet |
Falkegård, Morten Lennox, Robert J. Thorstad, Eva B. Einum, Sigurd Fiske, Peder Garmo, Øyvind A. Garseth, Åse H. Skoglund, Helge Solberg, Monica F. Utne, Kjell R. Vollset, Knut W. Vøllestad, Leif Asbjørn Wennevik, Vidar Forseth, Torbjørn |
author_sort |
Falkegård, Morten |
title |
Predation of Atlantic salmon across ontogenetic stages and impacts on populations |
title_short |
Predation of Atlantic salmon across ontogenetic stages and impacts on populations |
title_full |
Predation of Atlantic salmon across ontogenetic stages and impacts on populations |
title_fullStr |
Predation of Atlantic salmon across ontogenetic stages and impacts on populations |
title_full_unstemmed |
Predation of Atlantic salmon across ontogenetic stages and impacts on populations |
title_sort |
predation of atlantic salmon across ontogenetic stages and impacts on populations |
publisher |
Canadian Science Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1139/cjfas-2023-0029 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2023-0029 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2023-0029 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences ISSN 0706-652X 1205-7533 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.en_GB |
op_doi |
https://doi.org/10.1139/cjfas-2023-0029 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
_version_ |
1810432291727474688 |