Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation
Abstract Objective The snow crab Chionoecetes opilio resource in Assessment Division 2HJ has experienced prolonged high exploitation rates and reduced exploitable biomass over the past two decades. We aimed to explore whether this poor state of the resource is associated with spatial management chan...
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Online Access: | http://dx.doi.org/10.1002/nafm.10934 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1002/nafm.10934 |
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crwiley:10.1002/nafm.10934 2024-06-02T08:05:19+00:00 Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation Griffeth, Steven P. Baker, Krista D. Mullowney, Darrell R. J. 2023 http://dx.doi.org/10.1002/nafm.10934 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1002/nafm.10934 en eng Wiley http://creativecommons.org/licenses/by/4.0/ North American Journal of Fisheries Management volume 43, issue 5, page 1359-1371 ISSN 0275-5947 1548-8675 journal-article 2023 crwiley https://doi.org/10.1002/nafm.10934 2024-05-03T10:50:05Z Abstract Objective The snow crab Chionoecetes opilio resource in Assessment Division 2HJ has experienced prolonged high exploitation rates and reduced exploitable biomass over the past two decades. We aimed to explore whether this poor state of the resource is associated with spatial management changes made in 2003 and 2013. Methods We tested for differences in fishery performance trends before and after the implementation of spatial management which include standardized CPUE, spatial extent of fishing effort, and size at maturity of male snow crabs. Result The results show that spatial regulatory changes were successful in increasing fishery catch rates in the short term but that chronic high exploitation eventually overrode these gains, with contracted fishing patterns leading to increased localized depletion rates on dominant stock components. This ultimately culminated in a downward shift in size at maturity and other concerning biological outcomes. Conclusion The analysis demonstrates spatial management measures contributed to the present poor state of Assessment Division 2HJ snow crab and that such measures should serve as complements to—not replacements for—stringent quota control. Article in Journal/Newspaper Chionoecetes opilio Snow crab Wiley Online Library North American Journal of Fisheries Management 43 5 1359 1371 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Objective The snow crab Chionoecetes opilio resource in Assessment Division 2HJ has experienced prolonged high exploitation rates and reduced exploitable biomass over the past two decades. We aimed to explore whether this poor state of the resource is associated with spatial management changes made in 2003 and 2013. Methods We tested for differences in fishery performance trends before and after the implementation of spatial management which include standardized CPUE, spatial extent of fishing effort, and size at maturity of male snow crabs. Result The results show that spatial regulatory changes were successful in increasing fishery catch rates in the short term but that chronic high exploitation eventually overrode these gains, with contracted fishing patterns leading to increased localized depletion rates on dominant stock components. This ultimately culminated in a downward shift in size at maturity and other concerning biological outcomes. Conclusion The analysis demonstrates spatial management measures contributed to the present poor state of Assessment Division 2HJ snow crab and that such measures should serve as complements to—not replacements for—stringent quota control. |
format |
Article in Journal/Newspaper |
author |
Griffeth, Steven P. Baker, Krista D. Mullowney, Darrell R. J. |
spellingShingle |
Griffeth, Steven P. Baker, Krista D. Mullowney, Darrell R. J. Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation |
author_facet |
Griffeth, Steven P. Baker, Krista D. Mullowney, Darrell R. J. |
author_sort |
Griffeth, Steven P. |
title |
Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation |
title_short |
Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation |
title_full |
Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation |
title_fullStr |
Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation |
title_full_unstemmed |
Short‐term fishery gains mask long‐term resource pains: Spatial fisheries management changes promote hyperstable CPUE in Labrador snow crab Chionoecetes opilio during a period of heavy exploitation |
title_sort |
short‐term fishery gains mask long‐term resource pains: spatial fisheries management changes promote hyperstable cpue in labrador snow crab chionoecetes opilio during a period of heavy exploitation |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/nafm.10934 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1002/nafm.10934 |
genre |
Chionoecetes opilio Snow crab |
genre_facet |
Chionoecetes opilio Snow crab |
op_source |
North American Journal of Fisheries Management volume 43, issue 5, page 1359-1371 ISSN 0275-5947 1548-8675 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/nafm.10934 |
container_title |
North American Journal of Fisheries Management |
container_volume |
43 |
container_issue |
5 |
container_start_page |
1359 |
op_container_end_page |
1371 |
_version_ |
1800750120443052032 |