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Optimum Age-Specific Harvesting in a Nonlinear Population Model
William J. Reed
Vol. 36, No. 4 (Dec., 1980), pp. 579-593
Published by: International Biometric Society
Stable URL: http://www.jstor.org/stable/2556112
Page Count: 15
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The age-specific harvesting policy for maximizing equilibrium yield in a discrete-time, self-regenerating, age-structured population model is determined. The model assumes that survival of animals in their first year of life is density-dependent, while survival, growth and fecundity at other ages are density-independent. The optimal policy is of the `two-age' type. Other forms of age-selective harvesting, which are practically more feasible, are discussed, and an example using data for Arcto-Norwegian cod is provided to demonstrate the possibility of increasing yields from fisheries by such methods.
Biometrics © 1980 International Biometric Society