Equilibrium production models that incorporate fished area

David J Die, Victor R. Restrepo, William W. Fox

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Users of stock production models assume that a time series of catch-per-effort data reflects changes in the size of a self-sustaining biological population. This assumption is often violated in analyses of fisheries that have undergone changes in the areal coverage of the fishing fleet because the fraction of the population that is available to fishing also changes. Furthermore, the problem is aggravated when there is biomass transfer (in the form of migration) between the exploited and unexploited segments of the population. We present a general production model that can be used to understand the dynamics of equilibrium population size and yield as functions of fishing mortality and exploitable population fraction. We then develop two simple subsets of this model in which biomass transfer is either nil or high between the unexploited and exploited fractions, and we discuss methods to estimate the models’ parameters given data on catch, effort, and area. The application of the models is illustrated with data on the fishery for yellowfin tuna Thunnus albacares in the eastern Pacific.

Original languageEnglish (US)
Pages (from-to)445-454
Number of pages10
JournalTransactions of the American Fisheries Society
Volume119
Issue number3
DOIs
StatePublished - 1990

Fingerprint

Thunnus albacares
fishery
fisheries
fishing mortality
biomass
population size
time series analysis
fishing
time series
methodology
fishing fleet
method
parameter

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics

Cite this

Equilibrium production models that incorporate fished area. / Die, David J; Restrepo, Victor R.; Fox, William W.

In: Transactions of the American Fisheries Society, Vol. 119, No. 3, 1990, p. 445-454.

Research output: Contribution to journalArticle

Die, David J ; Restrepo, Victor R. ; Fox, William W. / Equilibrium production models that incorporate fished area. In: Transactions of the American Fisheries Society. 1990 ; Vol. 119, No. 3. pp. 445-454.
@article{cf5b27a02c594512a3cad73c69336412,
title = "Equilibrium production models that incorporate fished area",
abstract = "Users of stock production models assume that a time series of catch-per-effort data reflects changes in the size of a self-sustaining biological population. This assumption is often violated in analyses of fisheries that have undergone changes in the areal coverage of the fishing fleet because the fraction of the population that is available to fishing also changes. Furthermore, the problem is aggravated when there is biomass transfer (in the form of migration) between the exploited and unexploited segments of the population. We present a general production model that can be used to understand the dynamics of equilibrium population size and yield as functions of fishing mortality and exploitable population fraction. We then develop two simple subsets of this model in which biomass transfer is either nil or high between the unexploited and exploited fractions, and we discuss methods to estimate the models’ parameters given data on catch, effort, and area. The application of the models is illustrated with data on the fishery for yellowfin tuna Thunnus albacares in the eastern Pacific.",
author = "Die, {David J} and Restrepo, {Victor R.} and Fox, {William W.}",
year = "1990",
doi = "10.1577/1548-8659(1990)119[0445:EPMTIF]2.3.CO;2",
language = "English (US)",
volume = "119",
pages = "445--454",
journal = "Transactions of the American Fisheries Society",
issn = "0002-8487",
publisher = "American Fisheries Society",
number = "3",

}

TY - JOUR

T1 - Equilibrium production models that incorporate fished area

AU - Die, David J

AU - Restrepo, Victor R.

AU - Fox, William W.

PY - 1990

Y1 - 1990

N2 - Users of stock production models assume that a time series of catch-per-effort data reflects changes in the size of a self-sustaining biological population. This assumption is often violated in analyses of fisheries that have undergone changes in the areal coverage of the fishing fleet because the fraction of the population that is available to fishing also changes. Furthermore, the problem is aggravated when there is biomass transfer (in the form of migration) between the exploited and unexploited segments of the population. We present a general production model that can be used to understand the dynamics of equilibrium population size and yield as functions of fishing mortality and exploitable population fraction. We then develop two simple subsets of this model in which biomass transfer is either nil or high between the unexploited and exploited fractions, and we discuss methods to estimate the models’ parameters given data on catch, effort, and area. The application of the models is illustrated with data on the fishery for yellowfin tuna Thunnus albacares in the eastern Pacific.

AB - Users of stock production models assume that a time series of catch-per-effort data reflects changes in the size of a self-sustaining biological population. This assumption is often violated in analyses of fisheries that have undergone changes in the areal coverage of the fishing fleet because the fraction of the population that is available to fishing also changes. Furthermore, the problem is aggravated when there is biomass transfer (in the form of migration) between the exploited and unexploited segments of the population. We present a general production model that can be used to understand the dynamics of equilibrium population size and yield as functions of fishing mortality and exploitable population fraction. We then develop two simple subsets of this model in which biomass transfer is either nil or high between the unexploited and exploited fractions, and we discuss methods to estimate the models’ parameters given data on catch, effort, and area. The application of the models is illustrated with data on the fishery for yellowfin tuna Thunnus albacares in the eastern Pacific.

UR - http://www.scopus.com/inward/record.url?scp=0001538541&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001538541&partnerID=8YFLogxK

U2 - 10.1577/1548-8659(1990)119[0445:EPMTIF]2.3.CO;2

DO - 10.1577/1548-8659(1990)119[0445:EPMTIF]2.3.CO;2

M3 - Article

VL - 119

SP - 445

EP - 454

JO - Transactions of the American Fisheries Society

JF - Transactions of the American Fisheries Society

SN - 0002-8487

IS - 3

ER -