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PROJECT NUMBER • 2009-740
PROJECT STATUS:
COMPLETED

SCRC: Visiting Expert Application: Dr Doug Tocher

This visiting expert grant allowed a visit to South Australia by Dr Douglas Tocher. Dr Tocher is based at the Institute of Aquaculture at Stirling University in Scotland and he is internationally-recognised for his work as a research scientist in the area of finfish lipid and fatty acid nutrition....
ORGANISATION:
Flinders University
Environment
PROJECT NUMBER • 2014-023
PROJECT STATUS:
COMPLETED

An industry based mark recapture program to provide stock assessment inputs for the Western Rock Lobster Fishery following introduction of quota management

The West Coast Lobster Managed Fishery (WCRLMF) moved from input to output controls in 2010. This change directly affected the relativity of a number of fisherybased data sources, making assessment of the fishery more problematic. A novel examination of the stock dynamics was required to help ensure...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 2001-008
PROJECT STATUS:
COMPLETED

Assessment of seal fishery interactions in the South East Trawl Fishery (SETF) and the development of fishing practices and seal exclusion devices (SEDs) in the winter blue grenadier fishery to mitigate seal bycatch by SETF trawlers

Introducing a Code of Fishing Practice aimed at avoiding seals appeared to halve the incidence of seal bycatch in this fishery. In SED trials, the problems of fish-loss via the SED escape hatch and net blockage via the SED grid were solved by changes in SED design. Although the effectiveness of most...
ORGANISATION:
Department of Agriculture, Fisheries and Forestry (DAFF) ABARES

SCRC: PhD 5.04 Assessing the costs and benefits of changing fishing practices in the southern rock lobster fishery (Dr Bridget Green; Student Tim Emery)

Project number: 2009-762
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Bridget Green
Organisation: University of Tasmania (UTAS)
Project start/end date: 31 Mar 2010 - 31 Mar 2013
Contact:
FRDC

Need

There currently is concern in SRL fisheries about the status of inshore stocks. Catch has declined in a number of areas, despite improvements in catch rates. For example, in Northeastern Tasmania, catch is at record lows, yet CPUE has failed to climb. Inshore stocks on western Tasmania are now receiving historically high levels of effort, due in part to change in shot rotation practices. Further, it is unclear whether the extra effort in these practices is adequately recorded in estimates of CPUE. There has been a recent increase in potting effort, commonly referred to as double night fishing, whereby fishers set and haul their pots twice a night, compared to the standard practice of emptying pots once at dusk and/or once during the day. Currently we have no data on the composition of the catch in double night shots, and what proportion of captured lobsters are handled and released, and what consequence this handling has on production from the fishery.

Final report

ISBN: 978-1-925982-46-6
Author: Timothy James Emery
Final Report • 2013-04-01
2009-762-DLD-Phd.pdf

Summary

The specific aim of this thesis was to assess the effectiveness of individual transferable quota (ITQ) systems of management in meeting economic, ecological and social objective(s) through quantitatively analysing changing fishing practices and behaviour of fishers in the Tasmanian Southern Rocklobster (TSRL) fishery to inform management decision-making. Understanding how fishers behave and make decisions is critical in determining how best to manage fisheries. If the response of fishers to management measures can be predicted, unexpected and undesirable outcomes can be avoided.

ITQ management has been introduced in many international fisheries, with the purpose of accounting for human behaviour, as it theoretically generates behavioural incentives that are aligned with management objectives (e.g. reducing fishing costs). The ability of ITQ systems to meet continuing economic, ecological and social objectives therefore is centred on ensuring fisher behavioural incentives remain aligned with those objectives.

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