Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon
Abstract Farley, E. V., Starovoytov, A., Naydenko, S., Heintz, R., Trudel, M., Guthrie, C., Eisner, L., Guyon, J. R. 2011. Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon. – ICES Journal of Marine Science, 68: 1138–1146. Overwinter survival of Pacific salmon (Oncorhynchus...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsr021 http://academic.oup.com/icesjms/article-pdf/68/6/1138/29139987/fsr021.pdf |
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croxfordunivpr:10.1093/icesjms/fsr021 2024-09-15T17:59:27+00:00 Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon Farley, Edward V. Starovoytov, Alexander Naydenko, Svetlana Heintz, Ron Trudel, Marc Guthrie, Charles Eisner, Lisa Guyon, Jeffrey R. 2011 http://dx.doi.org/10.1093/icesjms/fsr021 http://academic.oup.com/icesjms/article-pdf/68/6/1138/29139987/fsr021.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 68, issue 6, page 1138-1146 ISSN 1095-9289 1054-3139 journal-article 2011 croxfordunivpr https://doi.org/10.1093/icesjms/fsr021 2024-08-05T04:29:03Z Abstract Farley, E. V., Starovoytov, A., Naydenko, S., Heintz, R., Trudel, M., Guthrie, C., Eisner, L., Guyon, J. R. 2011. Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon. – ICES Journal of Marine Science, 68: 1138–1146. Overwinter survival of Pacific salmon (Oncorhynchus sp.) is believed to be a function of size and energetic status they gain during their first summer at sea. We test this notion for Bristol Bay sockeye salmon (O. nerka), utilizing data from large-scale fisheries and oceanographic surveys conducted during mid-August to September 2002–2008 and from February to March 2009. The new data presented in this paper demonstrate size-selective mortality for Bristol Bay sockeye salmon between autumn and their first winter at sea. Differences in the seasonal energetic signatures for lipid and protein suggest that these fish are not starving, but instead the larger fish caught during winter apparently are utilizing energy stores to minimize predation. Energetic status of juvenile sockeye salmon was also strongly related to marine survival indices and years with lower energetic status apparently are a function of density-dependent processes associated with high abundance of juvenile sockeye salmon. Based on new information regarding eastern Bering Sea ecosystem productivity under a climate-warming scenario, we hypothesize that sustained increases in spring and summer sea temperatures may negatively affect energetic status of juvenile sockeye salmon, potentially resulting in increased overwinter mortality. Article in Journal/Newspaper Bering Sea Oxford University Press ICES Journal of Marine Science 68 6 1138 1146 |
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Abstract Farley, E. V., Starovoytov, A., Naydenko, S., Heintz, R., Trudel, M., Guthrie, C., Eisner, L., Guyon, J. R. 2011. Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon. – ICES Journal of Marine Science, 68: 1138–1146. Overwinter survival of Pacific salmon (Oncorhynchus sp.) is believed to be a function of size and energetic status they gain during their first summer at sea. We test this notion for Bristol Bay sockeye salmon (O. nerka), utilizing data from large-scale fisheries and oceanographic surveys conducted during mid-August to September 2002–2008 and from February to March 2009. The new data presented in this paper demonstrate size-selective mortality for Bristol Bay sockeye salmon between autumn and their first winter at sea. Differences in the seasonal energetic signatures for lipid and protein suggest that these fish are not starving, but instead the larger fish caught during winter apparently are utilizing energy stores to minimize predation. Energetic status of juvenile sockeye salmon was also strongly related to marine survival indices and years with lower energetic status apparently are a function of density-dependent processes associated with high abundance of juvenile sockeye salmon. Based on new information regarding eastern Bering Sea ecosystem productivity under a climate-warming scenario, we hypothesize that sustained increases in spring and summer sea temperatures may negatively affect energetic status of juvenile sockeye salmon, potentially resulting in increased overwinter mortality. |
format |
Article in Journal/Newspaper |
author |
Farley, Edward V. Starovoytov, Alexander Naydenko, Svetlana Heintz, Ron Trudel, Marc Guthrie, Charles Eisner, Lisa Guyon, Jeffrey R. |
spellingShingle |
Farley, Edward V. Starovoytov, Alexander Naydenko, Svetlana Heintz, Ron Trudel, Marc Guthrie, Charles Eisner, Lisa Guyon, Jeffrey R. Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon |
author_facet |
Farley, Edward V. Starovoytov, Alexander Naydenko, Svetlana Heintz, Ron Trudel, Marc Guthrie, Charles Eisner, Lisa Guyon, Jeffrey R. |
author_sort |
Farley, Edward V. |
title |
Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon |
title_short |
Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon |
title_full |
Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon |
title_fullStr |
Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon |
title_full_unstemmed |
Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon |
title_sort |
implications of a warming eastern bering sea for bristol bay sockeye salmon |
publisher |
Oxford University Press (OUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1093/icesjms/fsr021 http://academic.oup.com/icesjms/article-pdf/68/6/1138/29139987/fsr021.pdf |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_source |
ICES Journal of Marine Science volume 68, issue 6, page 1138-1146 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsr021 |
container_title |
ICES Journal of Marine Science |
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68 |
container_issue |
6 |
container_start_page |
1138 |
op_container_end_page |
1146 |
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1810436540254388224 |