Journal
ECOLOGICAL MODELLING
Volume 161, Issue 1-2, Pages 125-137Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0304-3800(02)00323-X
Keywords
bioeconomic model; toxicity bionomic equilibrium; optimal harvest policy
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The present paper deals with the problem of combined harvesting of two competing fish species, each of which obeys the law of logistic growth and releases a substance toxic to the other. The dynamical behaviour of the exploited system is examined. The possibility of existence of a bionomic equilibrium is discussed. The optimal harvesting policy is studied from the view point of control theory. Finally. some numerical examples are taken to illustrate the results. (C) 2002 Published by Elsevier Science B.V.
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