In most multi-species fisheries managed through output controls, total allowable catches (TACs) are set primarily on the basis of biological considerations, usually on a species by species basis. An implicit assumption of management is that fishers are able to adjust their product mix in line...

Surplus production models have been used in fisheries analysis for over 40 years. The traditional surplus production model incorporates the assumption that catch per unit of effort is constant for a given stock size. As a result, effort can be indefinitely applied to the fishery in the short...

Fishers are faced with multiple risks, including unpredictability of future catch rates, prices and costs. While the latter are largely beyond the control of fisheries managers, effective fisheries management should reduce uncertainty about future catches. Different management instruments are...

Improving the economic performance of fisheries is becoming increasinglyimportant in fisheries management, and in some cases, maximum economic yield (MEY) isset as a key management target. However, associated with MEY is a level of fishing activitythat is lower than would otherwise occur, even...

The Eastern tuna and billfish fishery (ETBF) is currently managed through an input quotasystem based on individual transferable effort units (the number of hooks) and a totalallowable effort level (i.e. total number of hooks) A spatial management policy based on aseries of differential...