Hierarchical analysis of a remote, Arctic, artisanal longline fishery
Abstract Dennard, S. T., MacNeil, M. A., Treble, M. A., Campana, S., and Fisk, A. T. 2010. Hierarchical analysis of a remote, Arctic, artisanal longline fishery. – ICES Journal of Marine Science, 67: 41–51. This is the first paper to explore trends in catch per unit effort (cpue) through time of a G...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsp220 http://academic.oup.com/icesjms/article-pdf/67/1/41/29134955/fsp220.pdf |
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croxfordunivpr:10.1093/icesjms/fsp220 2024-05-19T07:35:47+00:00 Hierarchical analysis of a remote, Arctic, artisanal longline fishery Dennard, Susan T. MacNeil, M. Aaron Treble, Margaret A. Campana, Steven Fisk, Aaron T. 2009 http://dx.doi.org/10.1093/icesjms/fsp220 http://academic.oup.com/icesjms/article-pdf/67/1/41/29134955/fsp220.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 67, issue 1, page 41-51 ISSN 1095-9289 1054-3139 journal-article 2009 croxfordunivpr https://doi.org/10.1093/icesjms/fsp220 2024-05-02T09:31:14Z Abstract Dennard, S. T., MacNeil, M. A., Treble, M. A., Campana, S., and Fisk, A. T. 2010. Hierarchical analysis of a remote, Arctic, artisanal longline fishery. – ICES Journal of Marine Science, 67: 41–51. This is the first paper to explore trends in catch per unit effort (cpue) through time of a Greenland halibut Reinhardtius hippoglossoides stock targeted by an artisanal, winter fishery in Cumberland Sound on southern Baffin Island, Canada. We modelled cpue data from 1987 to 2003, looking at two questions: what factors have driven cpue trends, and is cpue an accurate index of a stock's abundance? In the context of limited data availability, we used generalized linear models (GLMs) and hierarchical models to assess important predictors of cpue. Hierarchical models with multiple fixed environmental effects contained fishing location or individual fisher as random effects. A month effect showed greatest catch rates during February and March; the monthly North Atlantic Oscillation index was positively associated with catch rates; and a change from decreasing to increasing cpue after 1996 was linked to reduced fishery participation following a large storm. The best Akaike's information criterion-ranked GLM identified a negative relationship of cpue with shark bycatch. Although data limitations precluded conventional stock assessment, our models implicated the environment and fisher behaviour as drivers of cpue trends. Additionally, using multiple hierarchical models to predict cpue provided a more informative analysis for understanding trends in cpue than a GLM alone. Article in Journal/Newspaper Arctic Baffin Island Baffin Cumberland Sound Greenland North Atlantic North Atlantic oscillation Oxford University Press ICES Journal of Marine Science 67 1 41 51 |
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Oxford University Press |
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English |
description |
Abstract Dennard, S. T., MacNeil, M. A., Treble, M. A., Campana, S., and Fisk, A. T. 2010. Hierarchical analysis of a remote, Arctic, artisanal longline fishery. – ICES Journal of Marine Science, 67: 41–51. This is the first paper to explore trends in catch per unit effort (cpue) through time of a Greenland halibut Reinhardtius hippoglossoides stock targeted by an artisanal, winter fishery in Cumberland Sound on southern Baffin Island, Canada. We modelled cpue data from 1987 to 2003, looking at two questions: what factors have driven cpue trends, and is cpue an accurate index of a stock's abundance? In the context of limited data availability, we used generalized linear models (GLMs) and hierarchical models to assess important predictors of cpue. Hierarchical models with multiple fixed environmental effects contained fishing location or individual fisher as random effects. A month effect showed greatest catch rates during February and March; the monthly North Atlantic Oscillation index was positively associated with catch rates; and a change from decreasing to increasing cpue after 1996 was linked to reduced fishery participation following a large storm. The best Akaike's information criterion-ranked GLM identified a negative relationship of cpue with shark bycatch. Although data limitations precluded conventional stock assessment, our models implicated the environment and fisher behaviour as drivers of cpue trends. Additionally, using multiple hierarchical models to predict cpue provided a more informative analysis for understanding trends in cpue than a GLM alone. |
format |
Article in Journal/Newspaper |
author |
Dennard, Susan T. MacNeil, M. Aaron Treble, Margaret A. Campana, Steven Fisk, Aaron T. |
spellingShingle |
Dennard, Susan T. MacNeil, M. Aaron Treble, Margaret A. Campana, Steven Fisk, Aaron T. Hierarchical analysis of a remote, Arctic, artisanal longline fishery |
author_facet |
Dennard, Susan T. MacNeil, M. Aaron Treble, Margaret A. Campana, Steven Fisk, Aaron T. |
author_sort |
Dennard, Susan T. |
title |
Hierarchical analysis of a remote, Arctic, artisanal longline fishery |
title_short |
Hierarchical analysis of a remote, Arctic, artisanal longline fishery |
title_full |
Hierarchical analysis of a remote, Arctic, artisanal longline fishery |
title_fullStr |
Hierarchical analysis of a remote, Arctic, artisanal longline fishery |
title_full_unstemmed |
Hierarchical analysis of a remote, Arctic, artisanal longline fishery |
title_sort |
hierarchical analysis of a remote, arctic, artisanal longline fishery |
publisher |
Oxford University Press (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1093/icesjms/fsp220 http://academic.oup.com/icesjms/article-pdf/67/1/41/29134955/fsp220.pdf |
genre |
Arctic Baffin Island Baffin Cumberland Sound Greenland North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Baffin Island Baffin Cumberland Sound Greenland North Atlantic North Atlantic oscillation |
op_source |
ICES Journal of Marine Science volume 67, issue 1, page 41-51 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsp220 |
container_title |
ICES Journal of Marine Science |
container_volume |
67 |
container_issue |
1 |
container_start_page |
41 |
op_container_end_page |
51 |
_version_ |
1799474805782609920 |