5 results

The use of BRUVs as a tool for assessing marine fisheries and ecosystems: A review of the hurdles and potential

Project number: 2010-002
Project Status:
Completed
Budget expenditure: $30,000.00
Principal Investigator: Euan S. Harvey
Organisation: University of Western Australia (UWA)
Project start/end date: 14 Aug 2010 - 29 Nov 2010
Contact:
FRDC

Need

National reviews of Fisheries R&D needs (FRDC95/055) have identified the need for non-extractive, fishery-independent sampling and stock assessment techniques which are cost-effective, repeatable and robust across and range of habitats and depths. These methods are becoming increasingly important as Australian fisheries face the challenge of addressing ecosystem based fisheries management and climate change. A national workshop on the use of video for sensing the size and abundance of target and non-target fauna in Australian fisheries (FRDC2000/187) highlighted the potential for Baited Remote Underwater Video systems (BRUVs). After a decade, there has been wide adoption of this technique. However, differences in protocols for deployment, analysis and interpretation make spatial and temporal
comparisons of data difficult.

There is the need to develop a robust set of nationally agreed upon protocols to ensure that users are appropriately informed and trained through a comprehensive extension and capacity building program that also identifies key unresolved technical issues.

With the increased testing and use of BRUVs a number of independent developments have occurred. Future technological advances and more detailed statistical and modelling approaches will result in the BRUVs data being more useful for ecosystem assessment and management. Maximising the potential that these advances will provide to Australian fisheries will be achieved by a co-ordinated and
collaborative research strategy. We propose to host a two day workshop to critically evaluate the use of BRUVs as a data collection tool
for scalefishes and sharks. The workshop will identify the strengths, limitations and identify potential solutions.

Objectives

1. To critically evaluate the strengths and limitations of data collected with BRUVS for detecting changes in the relative abundance, length frequency and community composition of scalefishes and sharks.
2. To identify potential solutions to limitations.
3. To develop a nationally agreed to protocol for the deployment of BRUVs and the analysis of the resulting imagery.

A scenario analysis of the social impact of the Western Rock Lobster industry management options on fleet hosting communities

Project number: 2004-247
Project Status:
Completed
Budget expenditure: $427,287.00
Principal Investigator: Matthew Tonts
Organisation: University of Western Australia (UWA)
Project start/end date: 29 Jun 2004 - 31 Oct 2007
Contact:
FRDC

Need

THE WESTERN ROCK LOBSTER FISHERY IS CURRENTLY MANAGED BY INPUT CONTROLS. THE CURRENT MANAGEMENT ARRANGEMENT IS UNDER REVIEW AND CONSIDERATION IS BEING GIVEN TO A MOVE TOWARDS OUTPUT CONTROLS IN 2006. THERE IS RECOGNITION BY WA FISHERIES AND INDUSTRY OF THE IMPORTANCE OF THE SOCIAL DIMENSION AND THE NEED TO ASSESS THE SOCIAL CONSEQUENCES OF CHANGES IN MANAGEMENT ARRANGEMENTS. THIS STUDY WILL ASSESS THE SOCIAL COMPONENT OF THE FISHERY WHICH WILL INFORM MANAGERS AND INDUSTRY ON THE LIKELY SOCIAL CONSEQUENCES OF CHANGES TO THE EXISTING MANAGEMENT RULES, IN PARTICULAR THE CONSEQUENCES OF A CHANGE FROM INPUT TO OUTPUT CONTROLS. INDUSTRY HAS INDICATED THAT ANY DECISION ON THE FUTURE MANAGEMENT OF THE WESTERN ROCK LOBSTER FISHERY WOULD NOT BE POSSIBLE WITHOUT UNDERSTANDING THE SOCIAL DIMENSION. THIS IS CONSISTENT WITH MOST studies THAT highlight the importance of the social dimension and conclude that more extensive investigation IN THIS AREA is required.

The lack of a well developed model for assessing the social consequences of the industry on hosting communities is a substantial and significant gap in knowledge. Failure to address this gap means that future decision regarding the industry will be flawed. Reliable and valid sustainability assessments must be based on a genuine integration of the environmental, economic and social elements of the triple bottom line. This is consistent with the industry commitment to ESD, and addresses key elements of the FRDC research priorities. The 2000-2005 FRDC R & D Plan states, “it is important to understand social impacts of implementing fisheries management regimes…ESD will be pursued most effectively when the industry is economically strong and when social benefits are clear”. AN INTEGRATED ASSESSMENT OF THE ECONOMIC AND SOCIAL BENEFITS THAT FLOW TO THE INDUSTRY AND COMMUNITY FROM ECOLOGICALLY SUSTAINABLE USE OF THE WESTERN ROCK LOBSTER RESOURCE WILL ADDRESS THIS IMPERATIVE.

THE OUTCOMES OF THE RESEARCH WILL CONTRIBUTE TO ENSURING THAT THE FISHERY REMAINS WELL MANAGED AND COMMITED TO PRINCIPLES OF ESD. THE POTENTIAL CONTRIBUTION OF THIS PROJECT TO A WIDE RANGE OF DECISION AND PLANNING PROCESSES RECOGNISES THE SIGNIFICANT GAPS IN UNDERSTANDING THE SOCIAL IMPLICATIONS AND IMPACTS OF THE FISHING INDUSTRY IN GENERAL AND THE ROCK LOBSTER FISHERY IN PARTICULAR. AS SUCH, THE STUDY WILL CONTRIBUTE TO A RANGE OF IMPORTANT DECISIONS THAT WILL GUIDE THE FUTURE OF THE INDUSTRY IN WESTERN AUSTRALIA INCLUDING:

A) THE INDUSTRY PROJECT: "DETERMINING THE BEST MANAGEMENT SYSTEM FOR THE WESTERN ROCK LOBSTER INDUSTRY". THIS INTEGRATED 3 YEAR PROJECT WILL ASSESS THE SOCIAL, ECONONOMIC AND ENVIRONMENTAL IMPACTS OF THREE DIFFERENT MANAGEMENT SCENARIOS ON THE WESTERN ROCK LOBSTER FISHERY AND THEIR HOSTING COMMUITIES. THE MAIN DRIVER FOR THE PROJECT IS NATIONAL COMPETITION POLICY. THIS RESEARCH WILL ENABLE DECISION MAKERS TO ADDRESS THE NCP'S ‘NET COMMUNITY BENEFIT’ TEST WITH A FULL APPRECIATION OF THE SOCIAL IMPACT OF CHANGES ON FLEET HOSTING COMMUNITIES. THIS DATA IS NOT CURRENTLY AVAILABLE.

B) MARINE PARK PLANNING: A THOROUGH UNDERSTANDING OF THE IMPLICATIONS OF REALLOCATING FISHERIES RESOURCES FROM EXTRACTIVE USERS SUCH AS COMMERCIAL AND RECREATIONAL FISHERIES TO NON EXTRACTIVE USERS SUCH AS DIVE CHARTERS REQUIRE INFORMATION ON SOCIAL AND ECONOMIC ASPECTS. THIS RESEARCH PROJECT WILL ENABLE THE MARINE PARK PLANNING PROCESS TO BETTER UNDERSTAND THE SOCIAL COSTS OF CHANGES THAT WILL RESULT FROM MARINE PARK PLANNING AND IMPLEMENTING A SERIES OF MARINE PROTECTED AREAS ON COASTAL COMMUNITIES.

C) INTEGRATED FISHERIES MANAGEMENT: THE OUTCOMES OF THIS PROJECT WILL ASSIST DECISION MAKERS ENGAGED IN THE DEVELOPMENT OF AN INTEGRATED FISHERIES MANAGEMENT PLAN. THIS PLAN WILL HAVE IMPORTANT IMPLICATIONS FOR FISHERIES MANAGEMENT AND A FULL APPRECIATION OF THE SOCIAL DIMENSIONS IS CRUCIAL TO INFORMED, INTEGRATED PLANNING. THE BASIS OF INTEGRATED FISHERIES MANAGEMENT IS EXPLICIT ALLOCATION OF THE FISHERIES RESOURCES BETWEEN EXTRACTIVE USERS, FOR EXAMPLE, AN EXPLICIT ALLOCATION OF WESTERN ROCK LOBSTER BETWEEN THE RECREATIONAL AND COMMERCIAL SECTOR. THIS RESEARCH WILL ASSIST IN UNDERSTANDING THE SOCIAL COSTS OR BENEFITS OF REALLOCATION OF THE RESOURCE FROM COMMERCIAL TO RECREATIONAL USERS.

Objectives

1. To assist in the formulation of authoritative advice based on a thorough understanding of ESD principles (particularly social) to the relevant minister in response to national competition policy (NCP).
2. To establish a database of quantitative and qualitative social indicators for the communities hosting the western rock lobster fleet that will enable an integrated socio-economic assessment of a range of industry management options.
3. To contribute to the development of a framework and predictive sustainability assessment model integrating social data with environmental and economic data for use in predicting the wider effects of management changes on host communities.

Aquaculture Nutrition Subprogram: evaluation of value-added grain protein products for Atlantic salmon and black tiger prawns

Project number: 2004-236
Project Status:
Completed
Budget expenditure: $347,378.00
Principal Investigator: Brett Glencross
Organisation: University of Western Australia (UWA)
Project start/end date: 14 Aug 2004 - 2 Nov 2007
Contact:
FRDC

Need

The need to reduce reliance of aquaculture industries on fish based protein resources has long been recognized as an important issue. Notably the Fisheries Research and Development Corporation have given this issue such importance it is rated among their 9 key challenges to address in the 2000 – 2005 Research and Development Plan. Substantial work has already been undertaken to address this challenge over the past 10 years. Notably, recent developments have seen the increased adoption of some grain based alternatives being used by the aquaculture feed manufacturing industries. Lupin kernel meal use by this sector in particular is a prominent success story.

As the aquaculture feed industries begin to increase their use of alternative protein resources, such as lupin kernel meals, it becomes increasingly important to develop quality assurance (QA) assessment criteria for specific feed ingredients. The nature of these criteria will vary depending on the end use of the product. An improved understanding of the nutritional value and functional properties of the ingredients is also required to maximize the use of these ingredients by these industries and to begin the QA criteria development process.

Presently the extruded fin-fish feed sector (primarily salmonid feeds) is the largest aquaculture user of value-added grain products in Australia. However, it is apparent that further development of market confidence, through resolution of some of the nutritional value assessment and processing issues, is required for some additional aquaculture sectors (e.g. prawns) to encourage routine use of these products and work addressing these issues is planned in this proposal.

Furthermore, exploration of new product possibilities has already begun in the GRDC project with the development of a series of very promising lupin protein concentrates. However, further evaluation of the potential and constraints for the use of these new and innovative products within aquaculture feeds is needed and additional evaluation in Atlantic salmon and prawns is required.

Objectives

1. To determine the nutritional value of selected grain products, developed as part of the linked CLIMA-GRDC project, when included in feeds for Black tiger prawns and Atlantic salmon.
2. To evaluate any potential nutritional limitations of the grain products in aquaculture feeds.
3. To provide grain producers, grain processors, aquaculture feed manufacturers and the prawn and salmon aquaculture industries with information about the nutritional characteristics and quality assurance criteria of grain products so that they can be marketed and used with confidence in aquaculture feed formulations.

Final report

ISBN: 1 921258 28 4
Author: Brett Glencross
Final Report • 2017-09-29 • 10.65 MB
2004-236-DLD.pdf

Summary

This program represents a major collaborative initiative between the Grains and Fisheries Research and Development Corporations. It has engaged seven different research providers and three industrial collaborators in achieving its outcomes. Numerous findings were encountered through this program, which are collated in this report.

Key among those findings is:

  • The dehulling of lupins significantly improves their nutritional value to fish. A linear increase in digestible energy value was observed, while a curvilinear response in digestible protein value was observed. This finding shows that there is significant nutritional benefit to the fish in optimizing the dehulling efficiency of lupins, but in terms of protein value that a minor contamination with hulls is unlikely to significantly reduce the protein value.
  • Considerable variability in the digestible protein and energy value of the lupin kernel meals was observed. It was shown that this variability could be assessed as a function of grain composition.
  • Considerable variability in the composition of lupin kernel meals was observed among the 76 samples evaluated for digestibility. As protein increased in each lupin kernel meal a reciprocal decrease in NSP was observed.

Tactical Research Fund: Economic assessment of the impact of recent major changes to fisheries management in the WA West Coast demersal wetline fishery

Project number: 2009-081
Project Status:
Completed
Budget expenditure: $66,870.00
Principal Investigator: Paul McLeod
Organisation: University of Western Australia (UWA)
Project start/end date: 7 Apr 2010 - 30 May 2011
Contact:
FRDC

Need

The West Coast demersal wetline fish stocks are currently overfished. The best assessment calls for an immediate 50% reduction in the catches of Category 1 “high risk” species.

New management initiatives are being implemented across the commercial, recreational and charter sectors to secure the necessary catch reductions. The success of these initiatives depends upon each sector responding appropriately.

Early assessment of the impact of these changes and the response of each sector is essential. The time for this assessment is now, as the changes begin to take effect, in order that an early understanding of the reactions of fishers and the likely long-term impacts can be formed.

The new restrictions will impact significantly on recreational fishing over the next year, therefore, there is a pressing need to understand how the sector responds in terms of behaviour, catches, and overall satisfaction with the fishing experience. The proposed recreational fisher survey is designed to meet this requirement, so that the early operation of the new regime can be measured, and compared to the pre-change situation captured in a similar survey funded under FRDC 2001/036 undertaken by Nicholls and McLeod. Knowledge about changes in behaviour and satisfaction with the fishing experience are crucial to understanding the impact of the changes.

Department of Fisheries estimates show that the commercial catch has been brought within the desired range. There is now a need to assess how these changes have impacted upon the commercial viability and social dynamics of coastal harbour towns. No pre- and post-change comparisons have been undertaken, a deficiency that the proposed data collection is designed to address.

The role of the Charter sector and its response to management changes is an integral part of the project.

All components of the project are designed to deliver the required information in a timely fashion.

Objectives

1. Determine the change in profitability of commercial wet line vessels operating in the west coast wet line fishery under the new management arrangements for the 3 year period 2004-07 (prior to the new arrangements) and 3 year period (FY 2008-11) after their implementation.
2. Determine the range in responses of a sample of charter boat owners and their clients to the fishery management changes introduced in the west coast wet line fishery in 2009 (interim and additional) and the impact on client satisfaction and on their businesses
3. Determine the range in responses of a sample of recreational fishing boat owners to the fishery management changes introduced in the west coast wet line fishery in 2009-11 (interim and additional) and the impact on the frequency of their fishing activities in the 2008-12 period
4. Conduct a socio-economic impact assessment of the three sectors as a result of fishery management changes introduced and a scenario analysis of the likely impact of the alternative management options on 3-4 West Coast study towns with boat harbours

Final report

ISBN: 978-0-9756020-3-4
Author: Paul McLeod

Chemoattraction and the development of an artificial bait for the western rock lobster, Panulirus cygnus

Project number: 2000-255
Project Status:
Completed
Budget expenditure: $89,360.00
Principal Investigator: Emilio Ghisalberti
Organisation: University of Western Australia (UWA)
Project start/end date: 16 Oct 2000 - 22 Nov 2004
Contact:
FRDC

Need

A number of species, mainly whole fish and fish heads are imported as western rock lobster bait. These imports (chiefly from New Zealand, The Netherlands and Scotland), valued at about $12 million dollars in 1994-95, supplied about 65-70% of the rock lobster bait market. Thus, the rock lobster industry is very vulnerable to quarantine policy changes which might restrict bait supply. In addition an artificial bait with a long shelf life will be of considerable benefit to the operation of the rock lobster fishery. There is pressure from recreational fishing interests to reduce the use of important recreational fin-fish, such as Australian salmon and herring, as bait for western rock lobster. The exploitation rate on these important recreational species by commercial fishers could be relieved by the availability of an artificial bait that could result from the combination of the results from this study and those from FRDC 96/337. The need for research into chemoattractants in the western rock lobster becomes more pressing given the ambiguous results of the bait trials conducted under FRDC Project 99/372.

It appears that a range of chemical substances may attract western rock lobsters. Identification of these substances could lead to the application of this information in lobster (and perhaps other crustacean) fisheries across Australia and in other countries. The identification of the attractants is seen as fundamental to the provision of an effective artificial lobster bait. In addition, a cost effective bait could lead to a reduction in the fixed costs associated with fishing and increase thus generate greater profits from the export of product from Australia's most valuable fishery.

Objectives

1. The overall objective of the study is to contribute to the development of an effective and cost-effective artificial bait for western rock lobsters within the context of an understanding of chemical communication within the species (pheromones) and the response of lobsters to external chemical stimuli.
2. Undertake and collate the results of searches of the recent scientific and patent literature in relation to the development of artificial bait for the western rock lobster.
3. To isolate and identify attractant compounds present in normal commercial rock lobster bait.
4. To formulate and conduct trials to test the efficacy of identified attractants for western rock lobsters.

Final report

ISBN: 0-646-43190-0
Author: Emilio Ghisalberti
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