The economic value of the Tasmanian rock lobster fishery contributes significantly to the States regional economy. The fishery has recreational and commercial components, the latter generating an estimated $184.5 million p.a. ($65 million directly from landed value) and 1350 full-time-equivalent...

Data which are measured in several characteristics and at several different points of time are sometimes available for a population. Transition matrices or mobility tables are often constructed from such 'panel data' and, as in the case of the Census and migration analysis, become the basis for...

Fisheries scientists and managers want precise estimates of fishing and natural mortality for assessments and management decisions. Because tagging can be an expensive option, maximizing potential benefits requires careful consideration of experimental design. We evaluated four options for...

Determination of exploitation rate is considered important for both stock assessment and establishment of fishery reference points. From 1992 to 1996, a project was undertaken to evaluate the change-in-ratio technique for estimating exploitation rates for male lobsters off southern Tasmania....

Individual transferable quotas (ITQs) have been used in several countries worldwide to regulate access to marine fisheries. While ITQs can improve the economic efficiency of fisheries, in practice they are not a panacea and distribution and equity issues have been raised in many cases. To...

The effect of introducing a large marine protected area (MPA) into a managed commercial fishery was investigated using a spatially explicit, size-structured model. The stock dynamics approximated the biology of Tasmanian rock lobsters in that adult movement was very limited while larval...

Individual Transferable Quota (ITQ) management systems are typically introduced to promote better capital utilisation by the fishing fleet and other efficiency gains. ITQ management was introduced in the Tasmanian rock lobster industry in 1998 and led to a range of economic, social and cultural...

The capacity for the Tasmanian southern rock lobster fishery to support the annual har-vest is a function of both growth of the legal sized stock and also recruitment of new lobsters into the stock. Decline in productivity from both of these processes has result-ed in a decline of the...

This assessment of the Tasmanian giant crab fishery covers the period from 1st March 2007 to 29th February 2008, and provides forecasts of the likely response of the fishery to the total allowable commercial catch (TACC) set at a range of values.Total catch reported in logbooks for the 2007/08...