Isopleth Diagrams to Predict Equilibrium Yields of a Small Flounder Fishery

Abstract
Detailed records of the fishery for a small discrete population of winter flounders permit calculations of growth rate, natural and fishing mortality rates and recruitment which are used to construct yield- and value-isopleths. The analysis illustrates the value of such data in predicting equilibrium yields under different conditions. Results in the present instance indicate that near-maximum economic yields are now being realized by the fishery.

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