Oregon Dungeness Crab Fishery Bioeconomic Model PDF Download
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Author: Gilbert Sylvia Publisher: ISBN: Category : Dungeness crab fisheries Languages : en Pages : 0
Book Description
Dungeness crab (Cancer magister) is usually Oregon's most valuable fishery (e.g. eight out of the last 10 crab season and other fisheries calendar year harvests), yet it is not managed explicitly for sustainable yields. Stock assessments are not used to determine annual exploitation levels. Without the impetus for optimal yield management policies or other alternative policy objectives, there has been little research work on developing bioeconomic models to help determine the "best" management practices. This study was designed to develop a management-level bioeconomic model to explore the economic impacts of alternative management practices consistent with stock conservation approaches.
Author: Gilbert Sylvia Publisher: ISBN: Category : Dungeness crab fisheries Languages : en Pages : 0
Book Description
Dungeness crab (Cancer magister) is usually Oregon's most valuable fishery (e.g. eight out of the last 10 crab season and other fisheries calendar year harvests), yet it is not managed explicitly for sustainable yields. Stock assessments are not used to determine annual exploitation levels. Without the impetus for optimal yield management policies or other alternative policy objectives, there has been little research work on developing bioeconomic models to help determine the "best" management practices. This study was designed to develop a management-level bioeconomic model to explore the economic impacts of alternative management practices consistent with stock conservation approaches.
Author: Christopher Inju Cusack Publisher: ISBN: Category : Dungeness crab fisheries Languages : en Pages : 190
Book Description
Researchers rely on bioeconomic models to guide research and generate fishery management advice for commercial fisheries. Due partly to a paradigm shift towards ecosystem based fishery management, increasing complexity in the characteristics of the problems has meant that bioeconomic simulation models are becoming more prevalent in the fisheries literature. However in many of these models the economic behavior of fishermen is either omitted, or incorporated using a model that is not based on an economic theory of human behavior. This dissertation comprises three essays that make contributions to advancing the art and science of bioeconomic simulation modeling. The first essay illustrates how a model of fisherman behavior can be incorporated into a bioeconomic harvest-control-rule assessment model of a complex multi-species, multi-fleet fishery. Insights for rebuilding stocks based on different assessment techniques and fleet strategic behavior are discussed. The second essay introduces a novel method for distributing fishing effort across space and time in bioeconomic simulation models based on game theory. A comparison between this method and more traditional methods for modeling fleet fishing behavior are analyzed and the implications and the relative strengths of the game theoretic approach discussed. The third essay describes a bioeconomic simulation model of the Oregon Dungeness crab fishery. A novel application of duration analysis to describe the in-season exit behavior of fishermen is combined with a zero-inflated Poisson model to determine how fishing effort is allocated by different fleets under alternative fishery conditions. A stock dynamics model is then incorporated into a Monte Carlo simulation to assess how changes in season closure dates affect the amount of discard mortality in the fishery, and how these changes affect operating profits in the fishery.
Author: Gilbert Sylvia
Author: Gilbert Sylvia
Author: David S. Liao
Author: Christopher Inju Cusack
Author: 
Author: Stephanie Brodie
Author: State/Federal Dungeness Crab Fisheries Management Program. Ad Hoc Dungeness Crab Management Review Team
Author: Rod Kaiser
Author: Charles S. Korson
Author: Pacific Marine Fisheries Commission
Author: R. Michael Martin