5 results
Communities
PROJECT NUMBER • 2015-220
PROJECT STATUS:
COMPLETED

Isolating social and economic objectives within multiple stakeholder fisheries – a case study: the South Australian Marine Scalefish Fishery

The South Australian Marine Scalefish Fishery (MSF) has sustained extensive management change over time, influencing its demographics. Now fishers in the MSF community are dispersed both physically and in perspective. These factors have made it harder for the MSF to connect with and...
ORGANISATION:
University of Adelaide

Bycatch assessment of the estuarine commercial gill net fishery in NSW

Project number: 2000-172
Project Status:
Completed
Budget expenditure: $166,539.00
Principal Investigator: Charles A. Gray
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 20 Nov 2000 - 14 Jan 2004
Contact:
FRDC

Need

Reduction of wastage in fisheries has been a priority of management and research worldwide in recent years. Because of the public perceptions that estuarine gill netting is impacting on fish stocks, in particular causing mortality to sub-legal fish of recreational importance, and for industry to adopt the principles of ecologically sustainable development in the estuarine commercial finfish fishery, there is a clear need to (1) determine the real (as opposed to the perceived) level of discarding in the gill net fishery and how this varies spatially and temporally, and (2) determine the selectivities of the gill nets currently used by commercial fishers. If the anecdotal reports of large quantities of discards prove correct, and the selectivities of the current gears used are found to be not particularly good, then it would be highly beneficial to all users of the resource that more selective nets be developed. This would greatly assist EGMAC in developing a responsible management plan for the fishery. This in turn would help the commercial fishing industry in promoting itself as being responsible harvesters of the resource and would go along way to ameliorating the large amount of conflict among interest groups, as well as having long-term benefits to the resource and to all users of the resource.

Objectives

1. Identify and quantify the rates of retained and discarded catches from the different types of gill nets used in the NSW estuarine commercial finfish fishery.

Assessment of the impacts associated with the harvesting of marine benthic invertebrates for use as bait by recreational anglers

Project number: 1998-224
Project Status:
Completed
Budget expenditure: $346,425.89
Principal Investigator: Greg A. Skilleter
Organisation: University of Queensland (UQ)
Project start/end date: 10 Aug 1998 - 29 Jun 2004
Contact:
FRDC

Need

Coastal areas of Australia, especially those close to urban areas, are under increasing pressure from industrial and tourism developments, and the associated infrastructure to support them. These shallow-water coastal and estuarine areas will also continue to be the focus of attention by the recreational and commercial fishing sectors. An understanding of the impacts of damage to key intertidal habitats will allow managers to minimise the adverse impacts and developmental degradation on Australia's fisheries resources.

There is currently no detailed information available on the specific effects of loss or damage to intertidal estuarine habitats on the animal assemblages that utilise these habitats, despite the recognised importance of the habitats and the benthic invertebrates to fisheries resources. Studies which have examined the effects of damage to subtidal habitats have shown important links to fisheries utilising these habitats (e.g. Sainsbury et al., 1993). Similar studies should be a priority for critical intertidal estuarine habitats. Although this project focuses on damage to intertidal habitats caused by bait-harvesting, the results of this work will be applicable to other sources of damage to these habitats, providing an important database establishing causal relationships between effects on the physical structure of the habitat and impacts on the associated animals.

Objectives

1. Assess the ecological impacts of commercial and recreational harvesting of yabbies and bloodworms on other components of the ecosystem.
2. Assess the impacts of bait-harvesting activities on the sustainability of populations of yabbies (Trypaea australiensis) and bloodworms (Marphysa sp.).
3. Develop a population assessment technique for yabbies and bloodworms.
4. Determine levels of recruitment of these species and assess whether harvesting affects recruitment.
5. Obtain estimates of the recreational harvest of these species.
View Filter

Species