Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015
Abstract Numerical abundance and biomass values presented here for Pink Salmon Oncorhynchus gorbuscha , Chum Salmon O. keta , and Sockeye Salmon O. nerka in the North Pacific Ocean span 90 years (1925–2015), representing the most comprehensive compilation of these data to date. In contrast to less p...
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Online Access: | http://dx.doi.org/10.1002/mcf2.10023 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fmcf2.10023 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1002/mcf2.10023 |
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crwiley:10.1002/mcf2.10023 2024-06-23T07:55:57+00:00 Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015 Ruggerone, Gregory T. Irvine, James R. Gordon and Betty Moore Foundation 2018 http://dx.doi.org/10.1002/mcf2.10023 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fmcf2.10023 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1002/mcf2.10023 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Marine and Coastal Fisheries volume 10, issue 2, page 152-168 ISSN 1942-5120 1942-5120 journal-article 2018 crwiley https://doi.org/10.1002/mcf2.10023 2024-06-13T04:25:09Z Abstract Numerical abundance and biomass values presented here for Pink Salmon Oncorhynchus gorbuscha , Chum Salmon O. keta , and Sockeye Salmon O. nerka in the North Pacific Ocean span 90 years (1925–2015), representing the most comprehensive compilation of these data to date. In contrast to less populous species of salmon, these species are more abundant now than ever, averaging 665 × 10 6 adult salmon each year (1.32 × 10 6 metric tons) during 1990–2015. When immature salmon are included, recent biomass estimates approach 5 × 10 6 metric tons. Following an initial peak during 1934–1943, abundances were low until the 1977 regime shift benefited each species. During 1990–2015, Pink Salmon dominated adult abundance (67% of total) and biomass (48%), followed by Chum Salmon (20%, 35%) and Sockeye Salmon (13%, 17%). Alaska produced approximately 39% of all Pink Salmon, 22% of Chum Salmon, and 69% of Sockeye Salmon, while Japan and Russia produced most of the remainder. Although production of natural‐origin salmon is currently high due to generally favorable ocean conditions in northern regions, approximately 60% of Chum Salmon, 15% of Pink Salmon, and 4% of Sockeye Salmon during 1990–2015 were of hatchery origin. Alaska generated 68% and 95% of hatchery Pink Salmon and Sockeye Salmon, respectively, while Japan produced 75% of hatchery Chum Salmon. Salmon abundance in large areas of Alaska (Prince William Sound and Southeast Alaska), Russia (Sakhalin and Kuril islands), Japan, and South Korea are dominated by hatchery salmon. During 1990–2015, hatchery salmon represented approximately 40% of the total biomass of adult and immature salmon in the ocean. Density‐dependent effects are apparent, and carrying capacity may have been reached in recent decades, but interaction effects between hatchery‐ and natural‐origin salmon are difficult to quantify, in part because these fish are rarely separated in catch and escapement statistics. The following management changes are recommended: (1) mark or tag hatchery salmon so that ... Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Sakhalin Alaska Wiley Online Library Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Pacific Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Marine and Coastal Fisheries 10 2 152 168 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Numerical abundance and biomass values presented here for Pink Salmon Oncorhynchus gorbuscha , Chum Salmon O. keta , and Sockeye Salmon O. nerka in the North Pacific Ocean span 90 years (1925–2015), representing the most comprehensive compilation of these data to date. In contrast to less populous species of salmon, these species are more abundant now than ever, averaging 665 × 10 6 adult salmon each year (1.32 × 10 6 metric tons) during 1990–2015. When immature salmon are included, recent biomass estimates approach 5 × 10 6 metric tons. Following an initial peak during 1934–1943, abundances were low until the 1977 regime shift benefited each species. During 1990–2015, Pink Salmon dominated adult abundance (67% of total) and biomass (48%), followed by Chum Salmon (20%, 35%) and Sockeye Salmon (13%, 17%). Alaska produced approximately 39% of all Pink Salmon, 22% of Chum Salmon, and 69% of Sockeye Salmon, while Japan and Russia produced most of the remainder. Although production of natural‐origin salmon is currently high due to generally favorable ocean conditions in northern regions, approximately 60% of Chum Salmon, 15% of Pink Salmon, and 4% of Sockeye Salmon during 1990–2015 were of hatchery origin. Alaska generated 68% and 95% of hatchery Pink Salmon and Sockeye Salmon, respectively, while Japan produced 75% of hatchery Chum Salmon. Salmon abundance in large areas of Alaska (Prince William Sound and Southeast Alaska), Russia (Sakhalin and Kuril islands), Japan, and South Korea are dominated by hatchery salmon. During 1990–2015, hatchery salmon represented approximately 40% of the total biomass of adult and immature salmon in the ocean. Density‐dependent effects are apparent, and carrying capacity may have been reached in recent decades, but interaction effects between hatchery‐ and natural‐origin salmon are difficult to quantify, in part because these fish are rarely separated in catch and escapement statistics. The following management changes are recommended: (1) mark or tag hatchery salmon so that ... |
author2 |
Gordon and Betty Moore Foundation |
format |
Article in Journal/Newspaper |
author |
Ruggerone, Gregory T. Irvine, James R. |
spellingShingle |
Ruggerone, Gregory T. Irvine, James R. Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015 |
author_facet |
Ruggerone, Gregory T. Irvine, James R. |
author_sort |
Ruggerone, Gregory T. |
title |
Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015 |
title_short |
Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015 |
title_full |
Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015 |
title_fullStr |
Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015 |
title_full_unstemmed |
Numbers and Biomass of Natural‐ and Hatchery‐Origin Pink Salmon, Chum Salmon, and Sockeye Salmon in the North Pacific Ocean, 1925–2015 |
title_sort |
numbers and biomass of natural‐ and hatchery‐origin pink salmon, chum salmon, and sockeye salmon in the north pacific ocean, 1925–2015 |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/mcf2.10023 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fmcf2.10023 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1002/mcf2.10023 |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) ENVELOPE(-130.143,-130.143,54.160,54.160) |
geographic |
Keta Pacific Sockeye |
geographic_facet |
Keta Pacific Sockeye |
genre |
Oncorhynchus gorbuscha Pink salmon Sakhalin Alaska |
genre_facet |
Oncorhynchus gorbuscha Pink salmon Sakhalin Alaska |
op_source |
Marine and Coastal Fisheries volume 10, issue 2, page 152-168 ISSN 1942-5120 1942-5120 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/mcf2.10023 |
container_title |
Marine and Coastal Fisheries |
container_volume |
10 |
container_issue |
2 |
container_start_page |
152 |
op_container_end_page |
168 |
_version_ |
1802648751495446528 |