80 results

Effects of net fishing: addressing biodiversity and bycatch issues in Queensland inshore waters

Project number: 1997-206
Project Status:
Completed
Budget expenditure: $528,010.19
Principal Investigator: Ian Halliday
Organisation: Department of Agriculture and Fisheries EcoScience Precinct
Project start/end date: 30 Aug 1997 - 25 Mar 2002
Contact:
FRDC

Need

There is a critical need for information to support management decisions about inshore fisheries resources, and to address rising industry, conservation and public concern about the impact of net fishing on sustainability and biodiversity of the ecosystem and habitats associated with the fishery. The theory of measuring changes in biodiversity have yet to be applied in net fisheries. This project will be a test case for the practical application of determining net fishing effects on biodiversity.

Information on the effect of net fishing on bycatch and biodiversity in Australia is extremely limited. While some data exist on the marketed catch, the quantity and nature of bycatch remains virtually unknown. There is little information on the total catch characteristics of net fisheries, the proportions of species caught, and the proportion of the resource harvested each year. Similarly little is known about the fate of fish discarded from nets which would help to characterise the impact of net fishing on biodiversity.

This project will address the urgent need for information on the: total catch composition from net fishing, fate of discarded fish bycatch, impact on protected species and impact on biodiversity. Baseline data collected through both fishery dependent and independent methods will provide a basis for long term monitoring of the fishery and will enhance the interpretation of existing commercial catch records. These data will help meet the requirements of the ‘National Strategy for Conservation of Australia’s Biological Biodiversity’ of a) improving the knowledge base of fisheries, b) improving fisheries management and c) assessing and minimising the impact of commercial fishery practices on non-target and bycatch species, ecosystems and genetic diversity.

Objectives

1. Establish proportions of target catch and bycatch caught in inshore net fisheries along the Queensland east coast and the Gulf of Carpentaria.
2. Characterise the bycatch component of net fisheries in terms of species composition, seasonal abundance, habitat type and mesh size.
3. Determine the fate of fish discarded from net catches.
4. Establish the effects of net fishing on biodiversity through intensive comparative studies of areas closed and open to commercial net fishing.
5. Provide management advice on possible sustainability and biodiversity indicators, and on changes in net fishing practices needed to reduce impacts on bycatch species and biodiversity.

Final report

DNA markers and genetic stock structure in commercial species of penaeid prawns in the east coast fishery

Project number: 1994-165
Project Status:
Completed
Budget expenditure: $64,666.00
Principal Investigator: Shane Lavery
Organisation: Department of Agriculture and Fisheries EcoScience Precinct
Project start/end date: 28 Jun 1995 - 31 Dec 1998
Contact:
FRDC

Objectives

1. Assess the utility of a range of DNA techniques for examining genetic variation within species of penaeid prawn
2. Refine those techniques for examining east coast parwn stocks
3. Describe the genetic stock structure of two commercial species (Penaeus esculantus and P. plebejus) throughout their east coast distribution
4. Determine whether genetically distinct stocks of these species exist in the east coast fishery and, if so, locate the boundaries between such stocks
5. Quantify the potential rates of effective prawn migration between regions for each species
6. Provide specific advice on the management implications of the results

Tactical Research Fund: Reducing the impact of discarded recreational fishing tackle on coastal seabirds

Project number: 2011-057
Project Status:
Completed
Budget expenditure: $40,000.00
Principal Investigator: Matthew J. Campbell
Organisation: Department of Agriculture and Fisheries EcoScience Precinct
Project start/end date: 15 Jan 2012 - 15 Mar 2013
Contact:
FRDC

Need

This proposal will address the FRDC Recfishing Research priority area "Assessing the impact of recreational fishing methods on conservation values of aquatic habitats" as announced in the 2012 Annual Competitive Round Call for Expressions Of Interest. After making inquiries with seabird rescue organisations, it has become apparent that seabird entanglements in discarded fishing tackle is of major concern. Australia Zoo Wildlife Hospital report that their rescue unit responded to approximately 300 calls for bird entanglements in discarded fishing tackle in 2011 (to August 1). Further, the Rescue Hotline of Pelican and Seabird Rescue Inc. have received approximately 400 calls in 2011 (to the time of writing - 10/9/2011). These figures are unacceptable and measures need to be taken to decrease the incidence of seabird interactions with discarded recreational fishing tackle. The injuries that result from these interactions are often catastrophic, with a high proportion of entangled animals being euthanised. Healthy Waterways has produced a provocative poster, attached, depicting a pair of budgerigars surrounded by fishing line and hooks. Such negative stereotypes need to be addressed and, as such, there is a need to educate recreational fishers as to the consequences of the careless discarding of fishing tackle. This subject was recently highlighted in a Queensland recreational fishing publication, Queensland Fishing Monthly (see attachment). Both recreational fishing representative groups, Sunfish and Ecofishers, have expressed concern regarding this issue. A fifteen minute search at a secluded recreational fishing location in the northern suburbs of Brisbane by two people resulted in the collection of the fishing tackle pictured in the attachment (13/09/2011 - Tingalpa Creek). Although this could be construed as an environmental problem and beyond the purview of FRDC, it certainly reflects poorly on recreational fishers and, as such, an extension/educational project would help alleviate the problems highlighted in this proposal.

Objectives

1. Quantify the extent of seabird entanglement in northern Moreton Bay
2. Convene a workshop involving relevant stakeholders in order to establish methods for mitigating seabird entanglements
3. Promote the responsible removal of discarded fishing tackle from popular fishing locations in northern Moreton Bay

Final report

ISBN: 978-0-7345-0437-1
Author: Matthew Campbell
Industry
PROJECT NUMBER • 2012-213
PROJECT STATUS:
COMPLETED

Developing jungle perch fingerling production to improve fishing opportunities

This project has for the first time demonstrated the feasibility of hatchery production of jungle perch fingerlings. The research on jungle perch production has enabled a hatchery production manual with accompanying videos to be produced. This has given private commercial hatcheries the information...
ORGANISATION:
Department of Agriculture and Fisheries EcoScience Precinct
Industry
PROJECT NUMBER • 1984-019
PROJECT STATUS:
COMPLETED

A comparison of the fishing characteristics and inefficiencies of different otterboard designs under field conditions

Unlike the majority of engineered equipment, the design of fishing gear is tested ultimately in its ability to take or capture live animals which are able to modify their escape responses. For this reason, increases in the efficiency of operation and optimization of hydrodynamic design are not...
ORGANISATION:
Department of Agriculture and Fisheries EcoScience Precinct
Industry
PROJECT NUMBER • 2017-019
PROJECT STATUS:
COMPLETED

Freshwater fish attracting structures (FAS): Evaluating a new tool to improve fishing quality and access to fisheries resources in Australian impoundments

This document has been compiled from various sources and, to the authors’ knowledge, represents the best advice currently available regarding the use of fish attracting structures to improve recreational angling in Australian impoundments. Although the principles outlined in this document may...
ORGANISATION:
Department of Agriculture and Fisheries EcoScience Precinct

Effects of Trawling Subprogram: commercialisation of bycatch reduction strategies and devices in northern Australian prawn trawl fisheries

Project number: 1996-254
Project Status:
Completed
Budget expenditure: $986,253.71
Principal Investigator: Julie B. Robins
Organisation: Department of Agriculture and Fisheries EcoScience Precinct
Project start/end date: 8 Aug 1996 - 30 Jun 2001
Contact:
FRDC

Objectives

1. Inform and consult commercial trawl fishers about ways and means of reducing the catch of non-target organisms in their trawl nets.
2. Further develop promising by-catch reduction devices and other by-catch reduction strategies under commercial conditions.
3. Document, accumulate and publish performance data of turtle excluder devices and by-catch reduction gears suitable for the commercial fishing industry of the Queensland East Coast, the Torres Strait, the Northern Prawn Fishery, and other interested parties.
4. Encourage and promote the use of by-catch reduction devices by commercial trawl operators.
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