121 results

Value adding to fish processing waste through aquafeed development

Project number: 1999-424
Project Status:
Completed
Budget expenditure: $40,000.00
Principal Investigator: Geoff Gooley
Organisation: Agriculture Victoria
Project start/end date: 24 Jan 2000 - 30 Jun 2001
Contact:
FRDC

Objectives

1. To undertake an audit of seafood, fisheries and other aquatic "waste" biomass within relevant Victorian industry to characterise the availability and condition of such resources with potential for utilisation within relatively low-cost, semi-refined compound aquafeed development.
2. To undertake an analysis of nutritional, toxicant and pathogenic condition of selected waste resources with potential for utilisation in such aquafeeds.
3. To describe the physical, mechanical and production process requirements of such waste resources and identify associated economic parameters relevant to the development of viable "waste" aquafeed production capability within Australia.

Final report

ISBN: 0-7311-4852-5
Author: Geoff Gooley
Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Final Report • 2001-06-25 • 1.48 MB
1999-424-DLD.pdf

Summary

The management and disposal of solid wastes from seafood processing, food manufacturing and allied industries is a major economic and environmental issue for Australian industry.   Large quantities of wet waste of this nature are routinely disposed of to landfill at considerable cost to industry.  Some companies have developed markets or alternative uses for their wastes (such as petfood, bait, pig food or fertilisers) to avoid or offset the costs of disposal, but generally the wastes are supplied free of charge to secondary users and there is limited opportunity for downstream value-adding.

The utilisation of seafood, aquatic and other food processing wastes as a replacement for imported fishmeal in aquafeed production is the main focus of this project.   The availability of locally-produced formulated feeds using these otherwise wasted resources would provide a firm base to underpin current and future aquaculture production in Victoria and indeed Australia.

The study emphasised the need for a multi-pronged approach to determine the suitability of ingredients for incorporation into fish diets.  In all cases, the findings have to be confirmed through growth trials, prior to possible commercialisation.

Jellyfish fishery development and assessment

Project number: 1999-138
Project Status:
Completed
Budget expenditure: $322,832.01
Organisation: Agriculture Victoria
Project start/end date: 26 Jun 1999 - 18 Jun 2004
Contact:
FRDC

Need

The 1998 survey indicated that the biomass of C. mosaicus in Port Phillip Bay was not large enough to supply the 1500 tonnes wet weight required by the Australian Company. Biomass estimates for some strata were as little as 0.6% of the estimates during 1997 (Hudson and Walker 1998). However, anecdotal reports indicated that large aggregations of C. mosaicus occurred in Corner Inlet during 1998 and a survey during March 1999 indicates a very high biomass present during 1999. This highlights the high inter-annual variability in abundance of jellyfish and need for flexibility to harvest jellyfish from different regions, depending on size and distribution of the stocks. Stock Assessments are needed for the various regions before harvesting begins. This information is essential to assure investors of the viability of the resource.

The 1997, 1998 and 1999 surveys indicate that new sampling methods are required for providing more efficient field survey work and more robust estimates of abundance. The current method has the major limitations that the setting of sampling strata boundaries and counting of jellyfish depend on being able to see the jellyfish in the water column from the surface. Because the vertical distribution of C. mosaicus varies with weather condition and time of day (Hudson et al. 1997), there is a need to develop a sampling unit where sampling depth within the water column can be carefully controlled.

To provide for more reliable biomass estimates and for development of harvest strategies, there is a need for morphological, fecundity and size at maturity data of C. mosaicus. Also, there is a need to establish whether or not C. mosaicus harvested from Port Phillip Bay meet Australian national health standards. Other fish and shellfish harvested from Port Phillip Bay have been shown to be contaminated with various toxicants (Phillips 1976, Walker 1982, Walker et al. 1982, Fabris et al. 1995, Wu and Groves 1995, Walker et al. 1998). There is a need to test C. mosaicus for heavy metals, organochlorines, hydrocarbons and tributyltins in localities in Port Phillip Bay where these contaminants are known to occur.

Funding for the jellyfish research during 1997, 1998 and 1999 is from several sources. The 1997 survey and the harvesting, processing and export trials were funded by the National Seafood Centre ($15,000), Fisheries Victoria ($10,000), Business Victoria ($10,000), and Beijian Gaizhou Aquatic Products Industrial Corporation ($15,000), and the 1998 surveys of Port Phillip Bay and Westernport Bay were funded by Business Victoria ($10,000). The 1999 surveys of Port Phillip Bay, Westernport Bay and Corner Inlet are being funded by FRDC ($15,000) and Fisheries Victoria ($10,000).

This FRDC application for funds covers development of a 'jellyfish sampling unit' during 1999, and survey and collection of biological samples in Port Phillip Bay, Westernport Bay and Corner Inlet during 2000, 2001 and 2002. It is proposed that Fisheries Victoria meet the cost of the chemical laboratory analyses ($97,500) and FRDC meet the other costs ($322,832).

References
Anon. (1997). Fishery Statistics- catches and landings. FAO Yearbook 80 1995.
Fabris, G. J., Monahan, C.A., Werner, G. F., and Theodoropoulos, T.(1995). Impact of Shipping and Dredging on Toxicants in Port Phillip Bay. CSIRO Port Phillip Bay Environmental Study. 30 pp.

Hudson, R. J., Bridge, N. F., and Walker, T. I. (1997). Feasibility Study for Development of a Commercial Jellyfish Fishery in Victoria. Final Report to Fisheries Research Development Corporation, 40pp (Marine and Freshwater Resources Institute: Queenscliff).

Hudson, R.J.,and Walker, T.I. (1998). Distribution and abundance of the jellyfish Catostylus mosaicus in Port Phillip Bay and Western Port. Report to Business Victoria and Fisheries Victoria, 16pp (Marine and Freshwater Resources Institute: Queenscliff).

Kingsford, M. J., and Gillanders, B. M. (1995). Fishery and research priorities for Catostylus mosaicus Report for the Australian Nature Conservation Agency. 25 pp. (University of Sydney: Sydney).

Phillips, D. J. H. (1976). The common mussel Mytilus edulis as an indicator of pollution by zinc, cadmium, lead and copper. I. Relationships of metals in the mussel to those discharged by industry. Marine Biology 38, 71-80

Walker, T. I. (1982). Effects of Length and Locality on the Mercury Content of Blacklip Abalone, Blue Mussel Sand Flathead and Long nose Flathead from Port Phillip Bay, Victoria. Australian Journal Marine and Freshwater Research. 33, 553-560.

Walker, T. I., Glover, J. W. and Powell, D. G. M. (1982). Effect of Length Locality and Tissue Type on Mercury and Cadmium content of the Commercial scallop Pecten alba Tate from Port Phillip Bay, Victoria. Australian Journal Marine and Freshwater Research. 33, 547-552.

Walker, T. I., Fabris, G. J., Knuckey, I. A., Hudson, R. J. and Sporcic, M. I. (1998). Webb Dock Marine Ecology Study. Final Report to Melbourne Port Corporation. 99 pp. (Marine and Freshwater Resources Institute: Queenscliff).

Wu, R., and Groves, A. (1995). Cadmium and lead in tissues of scallops from Port Phillip Bay, Australia. Water Science Technology 31, 479-483

Objectives

1. Develop a sampling unit for efficient survey of jellyfish distribution and abundance.
2. Estimate spatial and temporal variation in abundance of C. mosaicus in Port Phillip Bay, Western Port and Corner Inlet during 2000, 2001 and 2002.
3. Determine relationships between total weight, bell weight, discard (oral arms) weight and diameter of C. mosaicus for several localities and the seasonality of these relationships.
4. Test whether the bells of C. mosaicus meet national health standards for cadmium, mercury, zinc, lead and arsenic & test for the effects of bell size and locality on concentration of these heavy metals in C. mosaicus.
5. Test whether the bells of C. mosaicus meet national health standards for organochlorides, hydrocarbons and tributyltins in Port Phillip Bay.
6. Provide annual fishery assessment reports which update commercial catch and effort.

Final report

ISBN: 1-74146-112-X
Author: Noel Coleman

Effects of Trawling Subprogram: maximising yield and reducing discards in the South East Trawl Fishery through gear development and evaluation - FRDC Secretariat file

Project number: 1998-204.20
Project Status:
Completed
Budget expenditure: $29,352.12
Principal Investigator: Ian Knuckey
Organisation: Agriculture Victoria
Project start/end date: 28 Nov 1998 - 1 Sep 2000
Contact:
FRDC

Objectives

1. To review current bycatch in the SE fishery.
2. To develop a program of R&D to mitigate bycatch in the SE fishery.

Final report

Author: Ian Knuckey
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998
Final Report • 1999-10-05 • 8.28 MB
1998-204.20-DLD.pdf

Summary

Maximising yield and reducing discards in the South East Trawl Fishery - Workshop 30-31 July 1998

Effects of Trawling Subprogram: maximising yield and reducing discards in the South East Trawl Fishery through gear development and evaluation

Project number: 1998-204
Project Status:
Completed
Budget expenditure: $1,055,978.00
Principal Investigator: Ian Knuckey
Organisation: Agriculture Victoria
Project start/end date: 19 Dec 1998 - 30 Aug 2008
Contact:
FRDC

Need

Discarding is unproductive and time consuming for fishers who have to sort through the catch and when commercial fish are discarded it is also seen as a waste of a potentially valuable resource. Furthermore, whilst the effects of discarding have yet to be established at an ecosystem level, the practice attracts negative publicity for the Industry and is considered by some to be contrary to the principles of ecologically sustainable development. For these reasons, it is necessary to consider ways of reducing the level of discarding in the SEF.

An understanding of gear selectivity is essential for the effective management of any fishery. Control of gear selectivity is a pre-requisite to regulating fishing mortalities associated with total catches (retained and discarded components). Like the majority of the world's fisheries, selectivities of trawls in the SEF are regulated by means of legally defined minimum mesh sizes (currently 90 mm). There is a great potential however, to use the recent advancements in trawl technology such as different shapes and sizes of mesh panels and codends, exclusion devices and modified trawl rigging to help modify SEF trawls and improve their selectivity towards targeted species and reduce the catch of small fish that are usually discarded. Thus, an extensive range of "tools" has been developed to improve trawl gear selectivity and overcome many of the perceived problems associated with trawling. This knowledge can be applied in the SEF with the appropriate design modifications to meet the specific gear / species configurations that occur in this fishery.

There would be many benefits for SEF fishers if gear selectivity or fishing practices could be modified to maximise the yield of their catch whilst reducing the catch of unwanted fish. The problem is to develop practical solutions to the various selectivity-related problems in the SEF which will be willingly be adopted by the fishers.

It is important to note that in any fishery, the development and adoption of gear modifications to achieve certain goals, such as bycatch reduction, is a long and often tedious process. The current project is only a small step in this process. It will not, and is not expected to, solve all of the SETF bycatch problems. The results of the project will form one of the foundations upon which the SETF can exist under the principles of ecologically sustainable development.

Objectives

1. Develop and evaluate modifications of trawl gear to reduce the capture and subsequent discard of small fish by SEF trawl vessels.
2. Measure the effectiveness of gear modification in the reduction of discarding against bycatch targets and indicators in the SETF Bycatch Action Plan (Action Plan to be developed by the SETMAC bycatch action plan working group).
3. Quantify the economic implications of gear modifications to Industry. (Ensure appropriate data are collected to allow assessment of long-term economic outcomes).
4. Develop an extension strategy to ensure background and progress of project are adequately communicated to Industry, AFMA and the wider community.

Final report

ISBN: 978-1-74264-017-4
Author: Ian A. Knuckey and Crispian J.T. Ashby
Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Final Report • 2010-05-12 • 5.90 MB
1998-204-DLD.pdf

Summary

There is increasing worldwide concern about the ecological impacts of trawling.  Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. 

Australia’s Commonwealth Trawl Sector (CTS) — previously known as the South East Trawl Fishery, or SETF — is a complex multi-species sector of the Southern and Eastern Scalefish and Shark Fishery (SESSF) operating across the shelf and upper slope waters in south eastern Australia.  The SESSF caught approximately 22,000 t of fish during 2007 with a gross production valued at around $96 million during the 2006–07 financial year (Morison 2008). More than 100 species of finfish and invertebrates are routinely taken in the SESSF, supplying most of the fresh fish for markets in NSW, Victoria, Tasmania and South Australia, and some product for the export market.  Onboard monitoring programs have revealed that varying, but significant levels of the catch (up to 50% by weight) are caught and discarded in the fishery.  Although some commercial species are discarded, many of the discards are comprised of small fish species with little or no commercial value.  Like other trawl fisheries, there is increasing concern about the ecological impacts of this bycatch in the CTS.  As a consequence, the Australian Fisheries Management Authority and fishery stakeholders have implemented a Bycatch Action Plan, which aims to reduce bycatch in the fishery and ensure ecological sustainability.  An important component of this Plan is a project designed to modify the trawl gear to increase the proportion of small unwanted fish that escape.  This report presents the results of that research and discusses the importance of disseminating this information to key industry stakeholders and the wider community.

Environment
PROJECT NUMBER • 1998-146
PROJECT STATUS:
COMPLETED

Evaluation of recreational fishery management controls of commercially important scalefish species

There are increasing demands for Australian fisheries management agencies to demonstrate that fisheries under their jurisdiction are being managed in accordance with the principles of ecologically sustainable development (ESD). The decision-making processes of the ESD management framework...
ORGANISATION:
Agriculture Victoria
Environment
PROJECT NUMBER • 1998-141
PROJECT STATUS:
COMPLETED

Environmental determinants of recruitment success of King George whiting

Catches of King George whiting in Victorian bays and inlets vary greatly from year to year. This research was aimed at finding out how much of this variation was due to the environment, and whether we could use measures of environmental variables to predict catches in the future. King George whiting...
ORGANISATION:
Agriculture Victoria
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