Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events
Abstract The effects of climate events on the feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in offshore waters of the central Gulf of Alaska were investigated during early summers (1994–2000), based on analyses of stomach contents, and carbon and nitrogen stable isotope...
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crwiley:10.1111/j.1365-2419.2004.00286.x 2024-06-23T07:57:03+00:00 Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events Kaeriyama, M. Nakamura, M. Edpalina, R. Bower, J. R. Yamaguchi, H. Walker, R. V. Myers, K. W. 2004 http://dx.doi.org/10.1111/j.1365-2419.2004.00286.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2004.00286.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2004.00286.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 13, issue 3, page 197-207 ISSN 1054-6006 1365-2419 journal-article 2004 crwiley https://doi.org/10.1111/j.1365-2419.2004.00286.x 2024-05-31T08:07:25Z Abstract The effects of climate events on the feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in offshore waters of the central Gulf of Alaska were investigated during early summers (1994–2000), based on analyses of stomach contents, and carbon and nitrogen stable isotopes ( δ 13 C and δ 15 N). Gonatid squids (mainly Berryteuthis anonychus ) were the dominant prey of all salmon species except for chum salmon ( O. keta ). During the 1997 El Niño event and the 1999 La Niña event, squids decreased sharply in the diets of all Pacific salmon except coho salmon ( O. kisutch ) in the Subarctic Current, and chum salmon diets changed from gelatinous zooplankton (1995–97) to a more diverse array of zooplankton species. A δ 13 C and δ 15 N analysis indicated that all salmon species occupied the same branch of the food web in 1999–2000. We hypothesize that high‐seas salmon adapt to climate‐induced changes in their prey resources by switching their diets either within or between trophic levels. To understand the effects of climate change on Pacific salmon in the Gulf of Alaska, biological oceanographic research on B. anonychus and other important prey resources is needed. Article in Journal/Newspaper Subarctic Alaska Wiley Online Library Gulf of Alaska Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Pacific Fisheries Oceanography 13 3 197 207 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The effects of climate events on the feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in offshore waters of the central Gulf of Alaska were investigated during early summers (1994–2000), based on analyses of stomach contents, and carbon and nitrogen stable isotopes ( δ 13 C and δ 15 N). Gonatid squids (mainly Berryteuthis anonychus ) were the dominant prey of all salmon species except for chum salmon ( O. keta ). During the 1997 El Niño event and the 1999 La Niña event, squids decreased sharply in the diets of all Pacific salmon except coho salmon ( O. kisutch ) in the Subarctic Current, and chum salmon diets changed from gelatinous zooplankton (1995–97) to a more diverse array of zooplankton species. A δ 13 C and δ 15 N analysis indicated that all salmon species occupied the same branch of the food web in 1999–2000. We hypothesize that high‐seas salmon adapt to climate‐induced changes in their prey resources by switching their diets either within or between trophic levels. To understand the effects of climate change on Pacific salmon in the Gulf of Alaska, biological oceanographic research on B. anonychus and other important prey resources is needed. |
format |
Article in Journal/Newspaper |
author |
Kaeriyama, M. Nakamura, M. Edpalina, R. Bower, J. R. Yamaguchi, H. Walker, R. V. Myers, K. W. |
spellingShingle |
Kaeriyama, M. Nakamura, M. Edpalina, R. Bower, J. R. Yamaguchi, H. Walker, R. V. Myers, K. W. Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events |
author_facet |
Kaeriyama, M. Nakamura, M. Edpalina, R. Bower, J. R. Yamaguchi, H. Walker, R. V. Myers, K. W. |
author_sort |
Kaeriyama, M. |
title |
Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events |
title_short |
Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events |
title_full |
Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events |
title_fullStr |
Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events |
title_full_unstemmed |
Change in feeding ecology and trophic dynamics of Pacific salmon ( Oncorhynchus spp.) in the central Gulf of Alaska in relation to climate events |
title_sort |
change in feeding ecology and trophic dynamics of pacific salmon ( oncorhynchus spp.) in the central gulf of alaska in relation to climate events |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1111/j.1365-2419.2004.00286.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2004.00286.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2004.00286.x |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) |
geographic |
Gulf of Alaska Keta Pacific |
geographic_facet |
Gulf of Alaska Keta Pacific |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_source |
Fisheries Oceanography volume 13, issue 3, page 197-207 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2419.2004.00286.x |
container_title |
Fisheries Oceanography |
container_volume |
13 |
container_issue |
3 |
container_start_page |
197 |
op_container_end_page |
207 |
_version_ |
1802650484345929728 |