Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean
Pacific salmon productivity is influenced by ocean conditions and interspecific interactions, yet their combined effects are poorly understood. Using data from 47 North American sockeye salmon (Oncorhynchus nerka) populations, we present evidence that the magnitude and direction of climate and compe...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/cjfas-2019-0422 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2019-0422 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2019-0422 |
id |
crcansciencepubl:10.1139/cjfas-2019-0422 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/cjfas-2019-0422 2024-09-15T18:28:41+00:00 Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean Connors, Brendan Malick, Michael J. Ruggerone, Gregory T. Rand, Pete Adkison, Milo Irvine, James R. Campbell, Robert Gorman, Kristen 2020 http://dx.doi.org/10.1139/cjfas-2019-0422 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2019-0422 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2019-0422 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 77, issue 6, page 943-949 ISSN 0706-652X 1205-7533 journal-article 2020 crcansciencepubl https://doi.org/10.1139/cjfas-2019-0422 2024-08-15T04:09:32Z Pacific salmon productivity is influenced by ocean conditions and interspecific interactions, yet their combined effects are poorly understood. Using data from 47 North American sockeye salmon (Oncorhynchus nerka) populations, we present evidence that the magnitude and direction of climate and competition effects vary over large spatial scales. In the south, a warm ocean and abundant salmon competitors combined to strongly reduce sockeye productivity, whereas in the north, a warm ocean substantially increased productivity and offset the negative effects of competition at sea. From 2005 to 2015, the approximately 82 million adult pink salmon (Oncorhynchus gorbuscha) produced annually from hatcheries were estimated to have reduced the productivity of southern sockeye salmon by ∼15%, on average. In contrast, for sockeye at the northwestern end of their range, the same level of hatchery production was predicted to have reduced the positive effects of a warming ocean by ∼50% (from a ∼10% to a ∼5% increase in productivity, on average). These findings reveal spatially dependent effects of climate and competition on sockeye productivity and highlight the need for international discussions about large-scale hatchery production. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 77 6 943 949 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Pacific salmon productivity is influenced by ocean conditions and interspecific interactions, yet their combined effects are poorly understood. Using data from 47 North American sockeye salmon (Oncorhynchus nerka) populations, we present evidence that the magnitude and direction of climate and competition effects vary over large spatial scales. In the south, a warm ocean and abundant salmon competitors combined to strongly reduce sockeye productivity, whereas in the north, a warm ocean substantially increased productivity and offset the negative effects of competition at sea. From 2005 to 2015, the approximately 82 million adult pink salmon (Oncorhynchus gorbuscha) produced annually from hatcheries were estimated to have reduced the productivity of southern sockeye salmon by ∼15%, on average. In contrast, for sockeye at the northwestern end of their range, the same level of hatchery production was predicted to have reduced the positive effects of a warming ocean by ∼50% (from a ∼10% to a ∼5% increase in productivity, on average). These findings reveal spatially dependent effects of climate and competition on sockeye productivity and highlight the need for international discussions about large-scale hatchery production. |
format |
Article in Journal/Newspaper |
author |
Connors, Brendan Malick, Michael J. Ruggerone, Gregory T. Rand, Pete Adkison, Milo Irvine, James R. Campbell, Robert Gorman, Kristen |
spellingShingle |
Connors, Brendan Malick, Michael J. Ruggerone, Gregory T. Rand, Pete Adkison, Milo Irvine, James R. Campbell, Robert Gorman, Kristen Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean |
author_facet |
Connors, Brendan Malick, Michael J. Ruggerone, Gregory T. Rand, Pete Adkison, Milo Irvine, James R. Campbell, Robert Gorman, Kristen |
author_sort |
Connors, Brendan |
title |
Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean |
title_short |
Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean |
title_full |
Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean |
title_fullStr |
Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean |
title_full_unstemmed |
Climate and competition influence sockeye salmon population dynamics across the Northeast Pacific Ocean |
title_sort |
climate and competition influence sockeye salmon population dynamics across the northeast pacific ocean |
publisher |
Canadian Science Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1139/cjfas-2019-0422 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2019-0422 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2019-0422 |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 77, issue 6, page 943-949 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2019-0422 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
77 |
container_issue |
6 |
container_start_page |
943 |
op_container_end_page |
949 |
_version_ |
1810470139630452736 |