Constant and Periodic Proportion Harvest Policies: Dynamic Implications in the Pacific Halibut and Atlantic Cod Fisheries

Abdul-Aziz Yakubu
Mathematics Department, Howard University

(June 2, 2011 10:30 AM - 11:30 AM)

Constant and Periodic Proportion Harvest Policies: Dynamic Implications in the Pacific Halibut and Atlantic Cod Fisheries

Abstract

Overfishing, pollution and other environmental factors have greatly reduced commercially valuable stocks of fish. In a 2006 Science article, a group of ecologists and economists warned that the world may run out of seafood from natural stocks if overfishing continues at current rates. In this talk, we will explore the interaction between constant and periodic proportion harvest policies and recruitment dynamics. In case studies, we analyze these policies and illustrate how they might be applied to Gulf of Alaska Pacific halibut fishery and the Georges Bank Atlantic cod fishery based on harvest rates from 1975 to 2007.