Évaluation des zones de fermeture de pêche de pénéidés, en Australie, au moyen d'un modèle de simulation par recrue

Translated title of the contribution: A per-recruit simulation model for evaluating spatial closures in an Australian penaeid fishery

David J Die, Reg A. Watson

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Spatial closures are commonly used by Australian fisheries managers to alter fishing patterns. To evaluate different fishing closures, however, fishery scientists have to understand and model the spatiotemporal interactions between fish stocks and fishing fleets. We develop a deterministic, stationary, per-recuit, age-structured simulation model to assess different spatial closure strategies, and use date from the Torres Strait tiger prawn fishery, Penaeus esculentus, as a working example. Our results show that selection of an optimum spatial closure largely depends on the relative importance given to changes of the different utility functions evaluated (yield, value, egg production). We show that, on average, with a spatial closure yield-per-recruit would decrease, but also show that value-per-recruit may increase 10% with the appropriate closure. Our results suggest that egg-per-recruit would always increase in the presence of a closure. By incorporating parameter uncertainty within the simulation model we predict the uncertainty associated with alternative closure strategies, and thus provide valuable information for the decision-making process.

Original languageFrench
Pages (from-to)145-153
Number of pages9
JournalAquatic Living Resources
Volume5
Issue number3
DOIs
StatePublished - 1992
Externally publishedYes

Fingerprint

simulation models
fishery
fisheries
Penaeus esculentus
utility functions
simulation
parameter uncertainty
egg production
decision making
managers
shrimp
uncertainty
fishing
prawn fishery
fish
strait
egg

Keywords

  • Fishery management
  • Penaeus esculentus
  • Per-recruit analysis
  • Spatial modelling

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Évaluation des zones de fermeture de pêche de pénéidés, en Australie, au moyen d'un modèle de simulation par recrue. / Die, David J; Watson, Reg A.

In: Aquatic Living Resources, Vol. 5, No. 3, 1992, p. 145-153.

Research output: Contribution to journalArticle

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abstract = "Spatial closures are commonly used by Australian fisheries managers to alter fishing patterns. To evaluate different fishing closures, however, fishery scientists have to understand and model the spatiotemporal interactions between fish stocks and fishing fleets. We develop a deterministic, stationary, per-recuit, age-structured simulation model to assess different spatial closure strategies, and use date from the Torres Strait tiger prawn fishery, Penaeus esculentus, as a working example. Our results show that selection of an optimum spatial closure largely depends on the relative importance given to changes of the different utility functions evaluated (yield, value, egg production). We show that, on average, with a spatial closure yield-per-recruit would decrease, but also show that value-per-recruit may increase 10{\%} with the appropriate closure. Our results suggest that egg-per-recruit would always increase in the presence of a closure. By incorporating parameter uncertainty within the simulation model we predict the uncertainty associated with alternative closure strategies, and thus provide valuable information for the decision-making process.",
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N2 - Spatial closures are commonly used by Australian fisheries managers to alter fishing patterns. To evaluate different fishing closures, however, fishery scientists have to understand and model the spatiotemporal interactions between fish stocks and fishing fleets. We develop a deterministic, stationary, per-recuit, age-structured simulation model to assess different spatial closure strategies, and use date from the Torres Strait tiger prawn fishery, Penaeus esculentus, as a working example. Our results show that selection of an optimum spatial closure largely depends on the relative importance given to changes of the different utility functions evaluated (yield, value, egg production). We show that, on average, with a spatial closure yield-per-recruit would decrease, but also show that value-per-recruit may increase 10% with the appropriate closure. Our results suggest that egg-per-recruit would always increase in the presence of a closure. By incorporating parameter uncertainty within the simulation model we predict the uncertainty associated with alternative closure strategies, and thus provide valuable information for the decision-making process.

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