11 results
Environment
PROJECT NUMBER • 2019-036
PROJECT STATUS:
COMPLETED

Implementation of dynamic reference points and harvest strategies to account for environmentally-driven changes in productivity in Australian fisheries

The need to adapt stock assessment methods and harvest strategies to explicitly and justifiably account for shifts in productivity has been recognised by the AFMA Resource Assessment Group for the Southern and Eastern Scalefish and Shark Fishery (SESSF), not least as a result of clearly evident...
ORGANISATION:
Pisces Australis Pty Ltd
Industry
PROJECT NUMBER • 2014-203
PROJECT STATUS:
COMPLETED

SESSF Monitoring and Assessment – Strategic Review

The Southern and Eastern Scalefish and Shark Fishery (SESSF) is a multi-species, multi-gear, multijurisdictional Commonwealth fishery. It is a fishery of substantial economic and social importance to Australia, as a key provider of high quality fish products to Australian markets. More than 600...
ORGANISATION:
Australian Fisheries Management Authority (AFMA)

Tactical Research Fund: Empowering Industry R&D: Trials of T90 mesh configuration for bycatch reduction and more efficient fishing in the Great Australian Bight Trawl Fishery

Project number: 2007-063
Project Status:
Completed
Budget expenditure: $72,064.46
Principal Investigator: Semi Skoljarev
Organisation: Great Australian Bight Fishing Industry Association Inc (GABIA)
Project start/end date: 14 Aug 2007 - 30 Jun 2008
Contact:
FRDC

Need

There is an obvious need to reduce bycatch in the fishery consistent with mandatory legislative and policy requirements (EPBC and FMA) and to develop more efficient harvest protocols. Consistent with this, GABIA has provided full support for the introduction of T90 mesh into their fishery through the mandatory use of T90 extensions and/or codends from 1 January 2007. Potentially, even greater benefits are possible with a move to T90 gear from the wingends to codend. Such nets have been tested and shown to be effective in some Icelandic fisheries.

Modifications to gear (particularly the very recent move to full T90 nets in some overseas fisheries) have been shown in other fisheries to be effective in reducing fuel consumption consistent with the need to reduce operating costs and to reduce greenhouse gas emissions in the fishing industry. This proposal aligns to priorities of reducing environmental impacts of trawl fisheries and of increasing operating efficiency and industry profitability.

Objectives

1. Run sea trials to compare catch composition of "standard" GABTF net design with the full T-90 net design
2. Obtain preliminary quantitative estimates comparing target species catch composition of each net design
3. Obtain preliminary quantitative estimates comparing bycatch species catch composition of each net design
4. Quantitatively compare and assess the towing efficiency of each net design
5. Qualitatively assess and compare differences in fish quality among net designs
6. Effectively convert the results into tangible benefits for the GABTF and AFMA's Bycatch Reduction Program

Final report

ISBN: 978-0-9805388-6-1
Author: Semi Skoljarev
Environment
PROJECT NUMBER • 2003-003
PROJECT STATUS:
COMPLETED

Spawning and reproductive characteristics of Bight redfish and deepwater flathead in the Great Australian Bight trawl fishery

This project addressed some of the important information gaps identified during assessment workshops for Bight redfish and deepwater flathead. Improved stock assessments, which incorporate the latest biological parameters (size-at-maturity, fecundity and sex ratio), has lead to the setting of...
ORGANISATION:
Agriculture Victoria

Effects of Trawling Subprogram: assessment of bycatch in the Great Australian Bight Trawl Fishery

Project number: 2000-169
Project Status:
Completed
Budget expenditure: $97,770.00
Principal Investigator: Ian Knuckey
Organisation: Agriculture Victoria
Project start/end date: 16 Oct 2000 - 27 Nov 2002
Contact:
FRDC

Need

The GAB Management Advisory Committee (GABMAC) and the GAB Industry Association (GABIA) have raised concerns that they do not have the data necessary to assess the GABTF's compliance with ESD principles. If the core objectives of The National Policy on Fisheries Bycatch are to be implemented for the GABTF, there is an essential need for baseline data on bycatch to be gathered. Once this information is available, they will be able to determine if bycatch levels are acceptable or if there are particular times or regions in which the bycatch levels in the GABTF are deemed too high. When a comprehensive understanding of the nature of the bycatch issue in the GABTF is established, it will be then possible to investigate the most appropriate ways of reducing the levels of bycatch.

Objectives

1. Design an onboard sampling strategy which will provide a representative sample of the spatial and temporal dynamics of the total catch composition (retained and discarded) in the GABTF.
2. Undertake onboard sampling of commercial vessels and collect basic biological data (size, growth, age, maturity etc.) on the important species caught in the GABTF.
3. Based on the data collected during this project, provide Industry, the GABMAC and stock assessment scientists with information on GABTF species biology and bycatch composition appropriate to their specific needs.
4. Investigate the potential for Environment Australia to fund data collection from commercial vessels working within the GAB Marine Park which can be used in conjunction with or comparison to the CSIRO research cruise. (To be negotiated)

Final report

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