Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events
Ocean climate and ocean-linked terrestrial climate affect nearly all phases of Atlantic salmon (Salmo salar) life history. Natural mortality in salmon occurs in two main phases: juvenile stages experience high mortality during freshwater residency and pre-adult salmon experience high mortality in es...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1998
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Online Access: | http://dx.doi.org/10.1139/d98-003 http://www.nrcresearchpress.com/doi/pdf/10.1139/d98-003 |
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crcansciencepubl:10.1139/d98-003 2024-06-23T07:51:19+00:00 Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events Friedland, Kevin D 1998 http://dx.doi.org/10.1139/d98-003 http://www.nrcresearchpress.com/doi/pdf/10.1139/d98-003 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue S1, page 119-130 ISSN 0706-652X 1205-7533 journal-article 1998 crcansciencepubl https://doi.org/10.1139/d98-003 2024-05-24T13:05:53Z Ocean climate and ocean-linked terrestrial climate affect nearly all phases of Atlantic salmon (Salmo salar) life history. Natural mortality in salmon occurs in two main phases: juvenile stages experience high mortality during freshwater residency and pre-adult salmon experience high mortality in estuarine and ocean environments. Freshwater survivorship is well characterized and tends to be less variable than marine mortality. Sources of marine mortality are poorly known due to a lack of basic knowledge about post-smolt distributions and habits. Coherence patterns among regional and continental stock groups suggest broad scale forcing functions play a more important role in defining recruitment than mortality effects associated with individual rivers. The action of mesoscale regional environment is most prominent during the post-smolt year when survival, maturation, and migration trajectories are being defined. During the early weeks at sea, growth mediated survival defines recruitment patterns. A correlation between sea surface water temperature and survival has been observed for salmon stocks in the northeast Atlantic suggesting temperature either directly affects growth or modifies post-smolt behavior. Age at first maturity is controlled by environmental as well as genetic factors. The abundance of two seawinter spawners in North America is directly scaled to the size of overwintering thermal habitat in the northwest Atlantic, which suggests a link between maturation and environment. Article in Journal/Newspaper Atlantic salmon Northeast Atlantic Northwest Atlantic Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 55 S1 119 130 |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Ocean climate and ocean-linked terrestrial climate affect nearly all phases of Atlantic salmon (Salmo salar) life history. Natural mortality in salmon occurs in two main phases: juvenile stages experience high mortality during freshwater residency and pre-adult salmon experience high mortality in estuarine and ocean environments. Freshwater survivorship is well characterized and tends to be less variable than marine mortality. Sources of marine mortality are poorly known due to a lack of basic knowledge about post-smolt distributions and habits. Coherence patterns among regional and continental stock groups suggest broad scale forcing functions play a more important role in defining recruitment than mortality effects associated with individual rivers. The action of mesoscale regional environment is most prominent during the post-smolt year when survival, maturation, and migration trajectories are being defined. During the early weeks at sea, growth mediated survival defines recruitment patterns. A correlation between sea surface water temperature and survival has been observed for salmon stocks in the northeast Atlantic suggesting temperature either directly affects growth or modifies post-smolt behavior. Age at first maturity is controlled by environmental as well as genetic factors. The abundance of two seawinter spawners in North America is directly scaled to the size of overwintering thermal habitat in the northwest Atlantic, which suggests a link between maturation and environment. |
format |
Article in Journal/Newspaper |
author |
Friedland, Kevin D |
spellingShingle |
Friedland, Kevin D Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events |
author_facet |
Friedland, Kevin D |
author_sort |
Friedland, Kevin D |
title |
Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events |
title_short |
Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events |
title_full |
Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events |
title_fullStr |
Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events |
title_full_unstemmed |
Ocean climate influences on critical Atlantic salmon ( Salmo salar) life history events |
title_sort |
ocean climate influences on critical atlantic salmon ( salmo salar) life history events |
publisher |
Canadian Science Publishing |
publishDate |
1998 |
url |
http://dx.doi.org/10.1139/d98-003 http://www.nrcresearchpress.com/doi/pdf/10.1139/d98-003 |
genre |
Atlantic salmon Northeast Atlantic Northwest Atlantic Salmo salar |
genre_facet |
Atlantic salmon Northeast Atlantic Northwest Atlantic Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue S1, page 119-130 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/d98-003 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
55 |
container_issue |
S1 |
container_start_page |
119 |
op_container_end_page |
130 |
_version_ |
1802642365647683584 |