92,841 results
Environment
PROJECT NUMBER • 2010-006
PROJECT STATUS:
COMPLETED

Estimating fishing mortality of major target species and species of conservation interest in the Queensland east coast shark fishery

Fishing mortality rates for the major targeted and byproduct species of sharks landed by the Queensland East Coast Inshore Fin Fish Fishery (ECIFFF) have been estimated. The effects of these fishing mortality rates on population persistence for these species have also been modelled with demographic...
ORGANISATION:
James Cook University (JCU)
Environment
PROJECT NUMBER • 2010-004
PROJECT STATUS:
COMPLETED

Passive acoustic techniques to monitor aggregations of sound producing fish species

The need to optimise spawning success and survival of offspring by fishes has resulted in the evolution of a vast array of reproductive strategies, such as spawning aggregations. A spawning aggregation is defined by Domeier and Colin (1997) as, “a group of con-specific fish gathered for the...
ORGANISATION:
Curtin University
Environment

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.
Environment
PROJECT NUMBER • 2010-001
PROJECT STATUS:
COMPLETED

Predicting the impacts of shifting recreational fishing effort towards inshore species

The project outputs have led to the following outcomes: 1. A model has been developed enabling reliable estimation of mortality of fish species that undertake size-related, unidirectional, offshore movements from age and length data. This new modelling approach is likely to be applicable to stocks...
ORGANISATION:
Murdoch University
Industry
PROJECT NUMBER • 2009-787
PROJECT STATUS:
COMPLETED

Seafood CRC: prawn market access defenders

Australia typically produces around 20,000 tonnes of prawns annually, of which around 25% is exported. The Australian Prawn Fisheries Council (APFC) and the Seafood CRC commissioned SARDI to undertake a food safety risk rating of prawns consumed in Australia. This project scientifically evaluated...
ORGANISATION:
SARDI Food Safety and Innovation
SPECIES
Industry
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