ИСТИНА

An age-structured bioeconomic model, continuous in state and time, is developed. The model is used for bioecomic analysis and optimization. The objective is to investigate how optimal harvesting patterns vary under different assumptions. The purpose is to find out how persistent pulse fishing patterns are with this kind of modeling framework. Emphasis is put on cost and demand parameters. The main results are that pulse fishing patterns are sensitive both to cost and demand parameters, and pulse fishing tends to disappear when there is a significant relationship between price and quantity.