Partial Recruitment Considerations in Setting Catch Quotas
An approach is presented for investigating the interactions between fishing fleets that compete by exploiting different age-groups of the same resource population. The term "partial recruitment" (PR) is used to describe the age-specific exploitation pattern experienced by a population, eit...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
1993
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Online Access: | http://dx.doi.org/10.1139/f93-084 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-084 |
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crcansciencepubl:10.1139/f93-084 2024-06-23T07:51:05+00:00 Partial Recruitment Considerations in Setting Catch Quotas Sinclair, A. F. 1993 http://dx.doi.org/10.1139/f93-084 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-084 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 50, issue 4, page 734-742 ISSN 0706-652X 1205-7533 journal-article 1993 crcansciencepubl https://doi.org/10.1139/f93-084 2024-06-06T04:11:14Z An approach is presented for investigating the interactions between fishing fleets that compete by exploiting different age-groups of the same resource population. The term "partial recruitment" (PR) is used to describe the age-specific exploitation pattern experienced by a population, either from individual fishing fleets or the combined effects of several fleets. Methods are presented to calculate catch quotas for the individual fleets if the management objective is to keep fleet effort constant, or alternatively to predict catch rates by fleet if the allocation rules are based on a percentage sharing of the total allowable catch (TAC) among fleets. Simulations based on an Atlantic cod (Gadus morhua) fishery on the Nova Scotian Shelf is used to illustrate the method. The results indicate the importance of considering differences in PR among competing fishing fleets when setting catch quotas. The relative effort exerted by the fleets will affect target fishing mortalities. The fleet that concentrates on younger fish can intercept recruitment. Since the fleets exploit different age-groups, changes in fishable biomass due to recruitment variation are lagged, and fishing success will vary among fleets. Understanding the dynamics of PR may help explain why certain fleets either exceed or fall short of catch quotas. Article in Journal/Newspaper atlantic cod Gadus morhua Canadian Science Publishing Tac ENVELOPE(-59.517,-59.517,-62.500,-62.500) Canadian Journal of Fisheries and Aquatic Sciences 50 4 734 742 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
An approach is presented for investigating the interactions between fishing fleets that compete by exploiting different age-groups of the same resource population. The term "partial recruitment" (PR) is used to describe the age-specific exploitation pattern experienced by a population, either from individual fishing fleets or the combined effects of several fleets. Methods are presented to calculate catch quotas for the individual fleets if the management objective is to keep fleet effort constant, or alternatively to predict catch rates by fleet if the allocation rules are based on a percentage sharing of the total allowable catch (TAC) among fleets. Simulations based on an Atlantic cod (Gadus morhua) fishery on the Nova Scotian Shelf is used to illustrate the method. The results indicate the importance of considering differences in PR among competing fishing fleets when setting catch quotas. The relative effort exerted by the fleets will affect target fishing mortalities. The fleet that concentrates on younger fish can intercept recruitment. Since the fleets exploit different age-groups, changes in fishable biomass due to recruitment variation are lagged, and fishing success will vary among fleets. Understanding the dynamics of PR may help explain why certain fleets either exceed or fall short of catch quotas. |
format |
Article in Journal/Newspaper |
author |
Sinclair, A. F. |
spellingShingle |
Sinclair, A. F. Partial Recruitment Considerations in Setting Catch Quotas |
author_facet |
Sinclair, A. F. |
author_sort |
Sinclair, A. F. |
title |
Partial Recruitment Considerations in Setting Catch Quotas |
title_short |
Partial Recruitment Considerations in Setting Catch Quotas |
title_full |
Partial Recruitment Considerations in Setting Catch Quotas |
title_fullStr |
Partial Recruitment Considerations in Setting Catch Quotas |
title_full_unstemmed |
Partial Recruitment Considerations in Setting Catch Quotas |
title_sort |
partial recruitment considerations in setting catch quotas |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/f93-084 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-084 |
long_lat |
ENVELOPE(-59.517,-59.517,-62.500,-62.500) |
geographic |
Tac |
geographic_facet |
Tac |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 50, issue 4, page 734-742 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f93-084 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
50 |
container_issue |
4 |
container_start_page |
734 |
op_container_end_page |
742 |
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1802642083409821696 |