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A Dynamic Model to Evaluate the Effects of Regulation on the Hawaii Commercial FisheriesProgress Reports (PDF): FY 2001, FY 2000, FY 1999, FY 1998 (see below)
The Western Pacific Regional Fishery Management Council (WPRFMC) has jurisdiction over nearly 1.5 million square miles, an area larger than the EEZs of the other seven regional fishery management councils. In terms of revenues, pelagic fisheries are the most important source of fish in this region, with revenues of $429 million in 1993. In terms of economic importance, the value of the region's fishery has been growing steadily over the last decade.
Among the most important objectives of the WPRFMC in managing the pelagic resources are to: (i) maximize the incomes of commercial fishermen while, (ii) maintaining optimal stock levels and providing opportunities for recreational fishing. In achieving these objectives the WPRFMC chooses from a range of available management options such as:
Each of these regulatory instruments affects the allocation of fishing effort by individual vessels who engage in profit-maximizing behavior. These regulatory policies have differential impacts on fish catches, fish stocks and profits to individual fishermen. Aggregate fish catches, in turn, determine the market prices of each type of fish.
The objectives of this research project are to develop a dynamic optimization model of the Hawaii commercial fisheries. The model will incorporate the dynamic effects of the WPRFMC's regulatory policies. Researchers will conduct model simulation and obtain estimates of the impacts of different regulatory instruments on long-run fishing effort, fleet size, vessel entry and exit, profits, and the distribution of income and employment in the fishery.
Dr. Chakravorty was co-editor of workshop proceedings published as part of SOEST-JIMAR publication series and a technical report on area closures:
management of pelagic fisheries: Economic and regulatory issues (Proceedings
of an international workshop organized by the Pelagic Fisheries Research
Program, JIMAR, UH, November 12-13, 1997)", 1999. Ujjayant Chakravorty
and John Sibert (editors). SOEST 99-04, JIMAR Contribution 99-321
the effects of area closure and tax policies: A spatial model of the
Hawaii longline fishery", 2000. Ujjayant Chakravorty and Keiichi Nemoto.
SOEST 00-02, JIMAR Contribution 00-329
"Modeling the effects of area closure and tax policies: A spatial model of the Hawaii longline fishery", 2000. Ujjayant Chakravorty and Keiichi Nemoto. SOEST 00-02, JIMAR Contribution 00-329
See SOEST-JIMAR Publications page for other PFRP reports
Progress Report - June 1998
In the last year, the project has focused on application of the dynamic model to examine impacts of specific policy instruments, such as area closure and exogenous demand shocks. In particular, three policies were examined: