This paper presents empirical evidence of production distortions under controlled access management in the Mid-Atlantic surf clam and ocean quahog fishery. Results indicate that vessels harvested multiple clam species even though the harvest technology exhibits diseconomies of scope. Vessels...

The transformation relationship between factor inputs and outputs - the efficient production frontier (EPF)- contains important information for fisheries managers. A directional technology distance function model of the harvesting technology is used to measure changes in the EPF over time....