A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries
A variety of eastern Bering Sea (EBS) flatfish including yellowfin sole (Limanda aspera), rock sole (Lepidopsetta bilineata), flathead sole (Hippoglossoides elassodon), and Alaska plaice (Pleuronectes quadrituberculatus), co-occur in various degrees in EBS trawl fisheries, impeding attempts to obtai...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2002
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Online Access: | http://dx.doi.org/10.1139/f02-012 http://www.nrcresearchpress.com/doi/pdf/10.1139/f02-012 |
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crcansciencepubl:10.1139/f02-012 2024-04-28T08:14:37+00:00 A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries Spencer, Paul D Wilderbuer, Thomas K Zhang, Chang Ik 2002 http://dx.doi.org/10.1139/f02-012 http://www.nrcresearchpress.com/doi/pdf/10.1139/f02-012 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 59, issue 2, page 291-302 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2002 crcansciencepubl https://doi.org/10.1139/f02-012 2024-04-02T06:55:52Z A variety of eastern Bering Sea (EBS) flatfish including yellowfin sole (Limanda aspera), rock sole (Lepidopsetta bilineata), flathead sole (Hippoglossoides elassodon), and Alaska plaice (Pleuronectes quadrituberculatus), co-occur in various degrees in EBS trawl fisheries, impeding attempts to obtain single-species management targets. A further complication is the bycatch of Pacific halibut (Hippoglossus stenolepis); halibut bycatch limits, rather than single-species catch quotas, have been the primary factor regulating EBS flatfish harvest in recent years. To examine bycatch interactions among the EBS flatfish listed above, an equilibrium mixed-species multifishery model was developed. Equilibrium yield curves, scaled by recent average recruitment, are flat topped or asymptotically increasing, reflecting low fishing selectivity during the first several years of life and low growth relative to natural mortality. A linear programming analysis indicated that relaxation of the halibut bycatch constraint at the optimal solution of catch by fishery would produce approximately 20 times more flatfish yield than a similar relaxation of any flatfish catch quota. A strategy for establishing halibut bycatch limits that considers the foregone revenue in the halibut and flatfish trawl fisheries reveals how the choice of halibut bycatch limit is affected by the management goal for the flatfish complex. Article in Journal/Newspaper Bering Sea Alaska Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 59 2 291 302 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Spencer, Paul D Wilderbuer, Thomas K Zhang, Chang Ik A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
A variety of eastern Bering Sea (EBS) flatfish including yellowfin sole (Limanda aspera), rock sole (Lepidopsetta bilineata), flathead sole (Hippoglossoides elassodon), and Alaska plaice (Pleuronectes quadrituberculatus), co-occur in various degrees in EBS trawl fisheries, impeding attempts to obtain single-species management targets. A further complication is the bycatch of Pacific halibut (Hippoglossus stenolepis); halibut bycatch limits, rather than single-species catch quotas, have been the primary factor regulating EBS flatfish harvest in recent years. To examine bycatch interactions among the EBS flatfish listed above, an equilibrium mixed-species multifishery model was developed. Equilibrium yield curves, scaled by recent average recruitment, are flat topped or asymptotically increasing, reflecting low fishing selectivity during the first several years of life and low growth relative to natural mortality. A linear programming analysis indicated that relaxation of the halibut bycatch constraint at the optimal solution of catch by fishery would produce approximately 20 times more flatfish yield than a similar relaxation of any flatfish catch quota. A strategy for establishing halibut bycatch limits that considers the foregone revenue in the halibut and flatfish trawl fisheries reveals how the choice of halibut bycatch limit is affected by the management goal for the flatfish complex. |
format |
Article in Journal/Newspaper |
author |
Spencer, Paul D Wilderbuer, Thomas K Zhang, Chang Ik |
author_facet |
Spencer, Paul D Wilderbuer, Thomas K Zhang, Chang Ik |
author_sort |
Spencer, Paul D |
title |
A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries |
title_short |
A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries |
title_full |
A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries |
title_fullStr |
A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries |
title_full_unstemmed |
A mixed-species yield model for eastern Bering Sea shelf flatfish fisheries |
title_sort |
mixed-species yield model for eastern bering sea shelf flatfish fisheries |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/f02-012 http://www.nrcresearchpress.com/doi/pdf/10.1139/f02-012 |
genre |
Bering Sea Alaska |
genre_facet |
Bering Sea Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 59, issue 2, page 291-302 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f02-012 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
59 |
container_issue |
2 |
container_start_page |
291 |
op_container_end_page |
302 |
_version_ |
1797580605804773376 |