GEORGIA SHRIMP HARVEST POLICY MODEL

摘要

Georgia's coastal/estuarine ecosystem is a complex of marshes, wetlands, hummocks, and coastal streams. It is the base for the Georgia shrimp industry and important associated local economic activity. Recent droughts altered the mix of salt and fresh water in shrimp breeding grounds, and landings have decreased accordingly. Drought effects have been exacerbated by water quality changes due to expansion of residential and commercial developments. Past simulation models in other areas determined optimum harvest dates for shrimp and other fisheries. Their usefulness has been limited for policy decisions by lack of dynamic feedback. This study integrates feedback effects, and economic, biological, and land use parameters into a dynamic model of the Georgia shrimp industry. It is adapted from a linear programming model of the Texas shrimp industry. Results will be useful to policy makers in determining optimal harvest schedules and land-use restrictions needed to protect shrimp populations and other components of the coastal ecosystem.