Graphical decision analysis of exploited fisheries
The depletion of a great many conventional fish stocks is urgent testimony for fisheries management to evaluate risk and uncertainty in an interpretable manner. We propose a novel decision based approach to time-series analysis that explores the spectrum of alternative population trajectories, each...
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McGill University
2003
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ftcanadathes:oai:collectionscanada.gc.ca:QMM.80287 2023-05-15T15:27:33+02:00 Graphical decision analysis of exploited fisheries Hatton, Ian McCann, Kevin (advisor) Master of Science (Department of Biology.) 2003 application/pdf http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80287 en eng McGill University alephsysno: 002085438 proquestno: AAIMQ98656 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80287 All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. Fish populations -- Estimates Fishery management -- Decision making Pacific cod fisheries -- North America Lamna -- North America Limanda ferruginea -- North America Electronic Thesis or Dissertation 2003 ftcanadathes 2014-02-16T01:02:09Z The depletion of a great many conventional fish stocks is urgent testimony for fisheries management to evaluate risk and uncertainty in an interpretable manner. We propose a novel decision based approach to time-series analysis that explores the spectrum of alternative population trajectories, each of which can be formulated as hypotheses about the state of the fishery. In the first chapter, we evaluate the ability of different regions of the surplus production state space to describe the true state of three North American fisheries: Pacific cod, porbeagle shark and yellowtail flounder. We consider how environmental variability and life history traits may alter our assumptions about population productivity, and we lay the foundation for a decision based age-structured analysis. In the second chapter, the approach is extended further into the ecological realm by considering how community interactions between Atlantic cod and harp seals can be represented in state space. Our results indicate that since the fishing moratorium in 1992, harp seals have potentially lowered cod productivity, preventing their recovery. Thesis atlantic cod Porbeagle Theses Canada/Thèses Canada (Library and Archives Canada) Pacific |
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Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
Fish populations -- Estimates Fishery management -- Decision making Pacific cod fisheries -- North America Lamna -- North America Limanda ferruginea -- North America |
spellingShingle |
Fish populations -- Estimates Fishery management -- Decision making Pacific cod fisheries -- North America Lamna -- North America Limanda ferruginea -- North America Hatton, Ian Graphical decision analysis of exploited fisheries |
topic_facet |
Fish populations -- Estimates Fishery management -- Decision making Pacific cod fisheries -- North America Lamna -- North America Limanda ferruginea -- North America |
description |
The depletion of a great many conventional fish stocks is urgent testimony for fisheries management to evaluate risk and uncertainty in an interpretable manner. We propose a novel decision based approach to time-series analysis that explores the spectrum of alternative population trajectories, each of which can be formulated as hypotheses about the state of the fishery. In the first chapter, we evaluate the ability of different regions of the surplus production state space to describe the true state of three North American fisheries: Pacific cod, porbeagle shark and yellowtail flounder. We consider how environmental variability and life history traits may alter our assumptions about population productivity, and we lay the foundation for a decision based age-structured analysis. In the second chapter, the approach is extended further into the ecological realm by considering how community interactions between Atlantic cod and harp seals can be represented in state space. Our results indicate that since the fishing moratorium in 1992, harp seals have potentially lowered cod productivity, preventing their recovery. |
author2 |
McCann, Kevin (advisor) |
format |
Thesis |
author |
Hatton, Ian |
author_facet |
Hatton, Ian |
author_sort |
Hatton, Ian |
title |
Graphical decision analysis of exploited fisheries |
title_short |
Graphical decision analysis of exploited fisheries |
title_full |
Graphical decision analysis of exploited fisheries |
title_fullStr |
Graphical decision analysis of exploited fisheries |
title_full_unstemmed |
Graphical decision analysis of exploited fisheries |
title_sort |
graphical decision analysis of exploited fisheries |
publisher |
McGill University |
publishDate |
2003 |
url |
http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80287 |
op_coverage |
Master of Science (Department of Biology.) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
atlantic cod Porbeagle |
genre_facet |
atlantic cod Porbeagle |
op_relation |
alephsysno: 002085438 proquestno: AAIMQ98656 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80287 |
op_rights |
All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
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1766357979965161472 |