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...

Economic surveys of fisheries are undertaken in several countries as a means of assessing the economic performance of their fisheries. The level of economic profits accruing in the fishery can be estimated from the average economic profits of the boats surveyed. Economic profits consist of two...

The move to decentralize and develop the inner areas of New South Wales in the first half of the century resulted in the development of several irrigation regions along the Murrumbidgee and Murray Rivers. Water was supplied to these regions at a low price, resulting in overuse of water and...

Illegal foreign fishing for sharks in Northern Australia has increased substantially over the last two decades. This has likely resulted in declines of shark species abundance, with potentially far-reaching impacts on the ecosystem. This, in turn, could also have indirectly affected the legal...

Economic surveys of fisheries are undertaken in several countries as a means of assessing the economic performance of their fisheries. The level of economic profits accruing in the fishery can be estimated from the average economic profits of the boats surveyed. Economic profits consist of two...

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