Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea
Walleye pollock ( Gadus chalcogramma ) caught in the Korean fishing area dramatically decreased in the late 1980s. To investigate the potential impact of the late 1980s climate regime shift on the collapse of the pollock catch, we developed a three-dimensional hydrodynamic model with data assimilati...
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Online Access: | http://dx.doi.org/10.3389/fmars.2022.802748 https://www.frontiersin.org/articles/10.3389/fmars.2022.802748/full |
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crfrontiers:10.3389/fmars.2022.802748 2024-10-06T13:46:47+00:00 Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea Kim, Yong-Yub Kang, Yu-Kyeong Lee, Seung-Tae Jung, Hae Kun Lee, Chung Il Kim, Sangil Jeong, Kwang Young Byun, Do-Seong Cho, Yang-Ki National Research Foundation Korea Hydrographic and Oceanographic Agency 2022 http://dx.doi.org/10.3389/fmars.2022.802748 https://www.frontiersin.org/articles/10.3389/fmars.2022.802748/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 9 ISSN 2296-7745 journal-article 2022 crfrontiers https://doi.org/10.3389/fmars.2022.802748 2024-09-10T04:05:15Z Walleye pollock ( Gadus chalcogramma ) caught in the Korean fishing area dramatically decreased in the late 1980s. To investigate the potential impact of the late 1980s climate regime shift on the collapse of the pollock catch, we developed a three-dimensional hydrodynamic model with data assimilation and a particle tracking model. Data-assimilated reanalysis showed that sea surface temperature increased by approximately 2°C in the spawning area of pollock in the late 1980s. The suitable spawning area in the East Korean Bay decreased due to warming in the late 1980s. Spawned eggs of walleye pollock were tracked using a particle tracking model for 30 days in January and February during 1983–1992. The number of individuals transported to the nursery within the Korean fishing area from the spawning area was reduced by 74% in the late 1980s. The intensified East Korean Warm Current (EKWC) could be responsible for the decreased number of individuals transported to the southern area in the late 1980s. Warming in the Korean fishing area could also cause a decrease in pollock. These oceanic changes might be linked to climate regime shifts in the late 1980s. The warming regime with positive Arctic Oscillation and weakened monsoon intensified the northward flow of the EKWC and accelerated the warming of the spawning and fishing areas in the late 1980s. Article in Journal/Newspaper Arctic Frontiers (Publisher) Arctic Frontiers in Marine Science 9 |
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Walleye pollock ( Gadus chalcogramma ) caught in the Korean fishing area dramatically decreased in the late 1980s. To investigate the potential impact of the late 1980s climate regime shift on the collapse of the pollock catch, we developed a three-dimensional hydrodynamic model with data assimilation and a particle tracking model. Data-assimilated reanalysis showed that sea surface temperature increased by approximately 2°C in the spawning area of pollock in the late 1980s. The suitable spawning area in the East Korean Bay decreased due to warming in the late 1980s. Spawned eggs of walleye pollock were tracked using a particle tracking model for 30 days in January and February during 1983–1992. The number of individuals transported to the nursery within the Korean fishing area from the spawning area was reduced by 74% in the late 1980s. The intensified East Korean Warm Current (EKWC) could be responsible for the decreased number of individuals transported to the southern area in the late 1980s. Warming in the Korean fishing area could also cause a decrease in pollock. These oceanic changes might be linked to climate regime shifts in the late 1980s. The warming regime with positive Arctic Oscillation and weakened monsoon intensified the northward flow of the EKWC and accelerated the warming of the spawning and fishing areas in the late 1980s. |
author2 |
National Research Foundation Korea Hydrographic and Oceanographic Agency |
format |
Article in Journal/Newspaper |
author |
Kim, Yong-Yub Kang, Yu-Kyeong Lee, Seung-Tae Jung, Hae Kun Lee, Chung Il Kim, Sangil Jeong, Kwang Young Byun, Do-Seong Cho, Yang-Ki |
spellingShingle |
Kim, Yong-Yub Kang, Yu-Kyeong Lee, Seung-Tae Jung, Hae Kun Lee, Chung Il Kim, Sangil Jeong, Kwang Young Byun, Do-Seong Cho, Yang-Ki Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea |
author_facet |
Kim, Yong-Yub Kang, Yu-Kyeong Lee, Seung-Tae Jung, Hae Kun Lee, Chung Il Kim, Sangil Jeong, Kwang Young Byun, Do-Seong Cho, Yang-Ki |
author_sort |
Kim, Yong-Yub |
title |
Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea |
title_short |
Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea |
title_full |
Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea |
title_fullStr |
Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea |
title_full_unstemmed |
Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea |
title_sort |
potential impact of late 1980s regime shift on the collapse of walleye pollock catch in the western east/japan sea |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/fmars.2022.802748 https://www.frontiersin.org/articles/10.3389/fmars.2022.802748/full |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Frontiers in Marine Science volume 9 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2022.802748 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
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1812175099334230016 |