D.I. Wilson and M. Soboil (New Zealand)
Natural resource management, squid, sea lion, bycatch, op timal control
Strategies to minimise sea lion bycatch in the squid fishing industries require a combination of exploiting the spatial and temporal characteristics of both squid and sea lions. Optimal control theory provides a useful starting point to develop feasible strategies to efficiently manage the resource. If these proposed strategies are successful, then the fishing industry will be self-governing meaning that there is less need for drastic external legislative action such as prematurely closing the fishing season. This paper develops a dynamic bio-economics model and compares various management strategies including op timal control to ensure that both the squid fishingindustry and the sea lion population are sustainable.
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