Eliminating implausible fisheries assessment models using fishers’ knowledge
Peer review of competing deepwater redfish (Sebastes mentella) assessment models revealed data inconsistencies where stock biomass decline shown by the survey in the 1990s was too rapid to be explained solely by reported catch. The models invoked different techniques to achieve fits, one by changing...
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Online Access: | http://dx.doi.org/10.1139/cjfas-2017-0178 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2017-0178 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2017-0178 |
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crcansciencepubl:10.1139/cjfas-2017-0178 2024-06-23T07:56:44+00:00 Eliminating implausible fisheries assessment models using fishers’ knowledge Duplisea, Daniel E. 2018 http://dx.doi.org/10.1139/cjfas-2017-0178 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2017-0178 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2017-0178 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 75, issue 8, page 1280-1290 ISSN 0706-652X 1205-7533 journal-article 2018 crcansciencepubl https://doi.org/10.1139/cjfas-2017-0178 2024-06-06T04:11:14Z Peer review of competing deepwater redfish (Sebastes mentella) assessment models revealed data inconsistencies where stock biomass decline shown by the survey in the 1990s was too rapid to be explained solely by reported catch. The models invoked different techniques to achieve fits, one by changing mortality at age and the other by survey weighting. The former fitted reported catch well, while the latter accepted a mismatch between reported and estimated catch. The assessments produced different estimates of historical stock size and future productivity. Interviews conducted with fishers of the stock suggested that catch was at least twice as high as the official record. In light of the fishers’ evidence, the model that invoked a large change in mortality with age to follow reported catch closely now appears less credible. This serves as a warning against introducing new biological mechanisms without credible justification. This is an example of how indicators derived from fisher’s knowledge, even if only from a small number of interviews, can be used to eliminate less plausible models. Article in Journal/Newspaper Sebastes mentella Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 75 8 1280 1290 |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Peer review of competing deepwater redfish (Sebastes mentella) assessment models revealed data inconsistencies where stock biomass decline shown by the survey in the 1990s was too rapid to be explained solely by reported catch. The models invoked different techniques to achieve fits, one by changing mortality at age and the other by survey weighting. The former fitted reported catch well, while the latter accepted a mismatch between reported and estimated catch. The assessments produced different estimates of historical stock size and future productivity. Interviews conducted with fishers of the stock suggested that catch was at least twice as high as the official record. In light of the fishers’ evidence, the model that invoked a large change in mortality with age to follow reported catch closely now appears less credible. This serves as a warning against introducing new biological mechanisms without credible justification. This is an example of how indicators derived from fisher’s knowledge, even if only from a small number of interviews, can be used to eliminate less plausible models. |
format |
Article in Journal/Newspaper |
author |
Duplisea, Daniel E. |
spellingShingle |
Duplisea, Daniel E. Eliminating implausible fisheries assessment models using fishers’ knowledge |
author_facet |
Duplisea, Daniel E. |
author_sort |
Duplisea, Daniel E. |
title |
Eliminating implausible fisheries assessment models using fishers’ knowledge |
title_short |
Eliminating implausible fisheries assessment models using fishers’ knowledge |
title_full |
Eliminating implausible fisheries assessment models using fishers’ knowledge |
title_fullStr |
Eliminating implausible fisheries assessment models using fishers’ knowledge |
title_full_unstemmed |
Eliminating implausible fisheries assessment models using fishers’ knowledge |
title_sort |
eliminating implausible fisheries assessment models using fishers’ knowledge |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
http://dx.doi.org/10.1139/cjfas-2017-0178 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2017-0178 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2017-0178 |
genre |
Sebastes mentella |
genre_facet |
Sebastes mentella |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 75, issue 8, page 1280-1290 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2017-0178 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
75 |
container_issue |
8 |
container_start_page |
1280 |
op_container_end_page |
1290 |
_version_ |
1802650049827569664 |