Optimal harvesting of two competing species with age dependence

摘要

This paper is concerned with optimal harvesting problems for a system consisting of two competing Populations with age structure. Existence and uniqueness of non-negative solutions to the system and the continuous dependence of solution on control variable are investigated. Existence of optimal policy is discussed, optimality conditions are derived by means of normal cone and Dubovitskii-Milyutin theory. (c) 2005 Elsevier Ltd. All rights reserved.