Maximum Sustainable Yields and the Self-Renewal of Exploited Populations with Age-Dependent Vital Rates
This paper examines the relationship between two problems in the theory of harvesting self-renewing populations with age-dependent vital rates. The first problem is to find a method of harvesting such that the yield sustainable from a population is maximized. Because of the obvious practical importance of this problem, it has been the subject of many investigations (e.g., Beverton and Holt 1957; Beddington and Taylor 1973; Doubleday 1975; Reed 1980; Botsford 1981; Horwood and Whittle 1986). The second problem is to find a method of harvesting which will maximize the capacity of a population to renew itself, given that a certain minimum crop must be taken. At first sight this problem looks relatively unimportant, and it is perhaps understandable that it has received relatively little attention.
KeywordsMaximum Sustainable Yield Primal Constraint Harvest Pattern Newborn Cohort Minimum Crop
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