22 results
Environment

Australian salmon (Arripis trutta): Population structure, reproduction, diet and composition of commercial and recreational catches in NSW

Project number: 2006-018
Project Status:
Completed
Budget expenditure: $629,386.00
Principal Investigator: John Stewart
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 29 Sep 2006 - 30 Sep 2009
Contact:
FRDC

Need

The eastern Australian salmon stock appears to have increased substantially in recent times and is believed to be under-utilized. Despite this, management of this species in NSW has been contentious, and is restricted by a lack of knowledge on biology and population dynamics. Specifically, managers require information that will assist their decision making concerning: (i) the status of the stock; (ii) potential expansion of the commercial fishery; (iii) impacts of resource allocation, and; (iv) ecosystem effects of salmon population expansion.

There is a lack of information on the sizes and ages of salmon being harvested and little knowledge of their biology. Research on age and growth in the 1970’s was based on scales, which have since been shown to be inaccurate (Egglestone 1975). Studies on reproduction have been limited to the timing of spawning in the southern regions. Results from this project will provide the necessary information on the composition of landings, age, growth, reproduction, movements and diet to enable informed management of the salmon resource. This project aims to address issues directly related to NSW management, however the baseline information will be valuable for management across the range of the stock.

The project outcomes of improved knowledge and management of salmon will directly address the FRDC R&D program “Natural Resources Sustainability” and the strategic challenge to “Improve the sustainability of natural resources supporting wild-catch and aquaculture”. At the state level, this project will satisfy three priority areas of research listed under the key document “Planning strategic research, aquaculture and aquatic conservation in New South Wales, 2004-2009.” These are: (i) to examine the predatory impacts of Australian salmon on other commercially important fish species; (ii) information on age and growth of recreationally important species, and; (iii) development of stock assessments for target species in the ocean hauling fishery.

Objectives

1. Determine whether eastern Australian salmon comprise a single stock along SE Australia
2. Describe the catch composition of eastern Australian salmon taken by commercial and recreational fishers in NSW, including spatial patterns in sizes and ages
3. Describe the reproductive biology of eastern Australian salmon in NSW, including their size/age at maturity and where and when they spawn
4. Model growth (using otolith derived estimates of size-at-age) of eastern Australian Salmon
5. Develop yield per recruit and spawner-biomass per recruit models at present levels of fishing mortality
6. Analyse existing tagging data for patterns of movement and potential stock delineation
7. Describe diet and potential localised impacts on prey items
8. Describe the totemic and cultural significance of Australian salmon to the Aboriginal people of NSW

Multi-fishery collaboration to assess population abundances and post release survival of threatened Sawfish captured in commercial fishing operations in Northern Australia

Project number: 2022-068
Project Status:
Current
Budget expenditure: $528,552.00
Principal Investigator: Richard Pillans
Organisation: Reef and Rainforest Research Centre Ltd
Project start/end date: 31 Dec 2022 - 29 Jun 2026
Contact:
FRDC

Need

Commercial in confidence. To know more about this project please contact FRDC.

Objectives

Commercial in confidence
Environment
PROJECT NUMBER • 2017-047
PROJECT STATUS:
COMPLETED

Understanding environmental and fisheries factors causing fluctuations in mud crab and blue swimmer crab fisheries in northern Australia to inform harvest strategies

This project investigated relationships between environmental factors and harvests of crabs in the Gulf of Carpentaria (GoC), northern Australia. Desktop correlative analyses clearly indicated that recent fluctuations in the catches of Giant Mud Crabs in the GoC are most likely driven by...
ORGANISATION:
Department of Primary Industries (QLD)
Industry

Informing the structural reform of South Australia's Marine Scalefish Fishery

Project number: 2017-014
Project Status:
Completed
Budget expenditure: $496,836.00
Principal Investigator: Jonathan Smart
Organisation: SARDI Food Safety and Innovation
Project start/end date: 30 Jun 2017 - 29 Jun 2020
Contact:
FRDC

Need

South Australia’s Marine Scalefish Fishery (MSF) is currently undergoing a strategic review with the principal aim of restructuring the fishery in order to ensure its long-term sustainability and economic viability. The heterogeneous mixture of participants, fishing devices, licence conditions and regulations associated with this fishery makes the tasks of administering and managing it extremely challenging. These complexities intertwined within a highly dynamic fleet that is capable of shifting fishing effort amongst species and regions often alters the emphasis of its overarching management. Industry and Government are working collaboratively to address the inherent complexities of the fishery through firstly developing a mechanism to rationalise the fleet, then reforming its overall structure, and ultimately refining its future management. In order to optimise this structural reform, it is necessary to disentangle and understand the fleet dynamics of this extremely complex fishery. This project aims to explore the implications of strategic management options (e.g. regionalisation, licensing, ITQ’s and ITE’s) on the future structure and viability of the MSF, from resource sustainability, economic and social perspectives.

Objectives

1. To review the structure and function of multi-species, multi-gear fisheries around the world.
2. To disentangle the complexities of the South Australian commercial Marine Scalefish Fishery to describe long-term spatio-temporal trends in the composition, dynamics and socio-economic performance of the fishing fleet
3. To evaluate the possible strategic management options such as regionalisation, licensing, ITQs and ITEs on the future structure and viability of South Australia’s MSF
4. To determine the biological, economic and social 'carrying capacity' of the MSF across key regions of the fishery.

Final report

ISBN: 978-1-876007-43-0
Authors: Jonathan Smart Mike Steer Fred Bailleul David Hall Ian Knuckey Anders Magnusson Julian Morison Jon Presser and Jacki Schirmer
Final Report • 2022-09-27 • 29.96 MB
2017-014-DLD.pdf

Summary

This study was undertaken by the South Australia Research and Development Institute (SARDI) in collaboration with PIRSA Fisheries and Aquaculture, BDO EconSearch, the Marine Fishers Association (MFA), Fishwell Consulting and University of Canberra. This project guided the reform of South Australia’s commercial Marine Scalefish Fishery (MSF) by providing scientific advice and analyses to underpin its implementation. The MSF is a multi-sector, multi-gear and multi-species fishery, making any management reform a complex and difficult process. Both the sustainability of key stocks and commercial fishery’s economic performance have been deteriorating over a 20-year period; significantly influenced by fishery overcapitalisation. Simply put, there were too many fishers and not enough fish to support a vibrant and sustainable commercial fishery. This was addressed through the three ‘pillars’ of the reform: regionalisation, unitisation and rationalisation. These pillars were reflected in the reform with: 1) the creation of four new zones of management; 2) implementation of individual transferable quotas (ITQs) for appropriate ‘Tier 1’ stocks; and 3) rationalisation of the commercial MSF fleet by removing one third of licences through a voluntary licence surrender program (VLSP). These pillars were supported by research on the biological, economic and social carrying capacity of the fishery. The reform was implemented on 1 July 2021 resulting in a fishery that has regional management with appropriate output controls and a reduced fleet size.

Environment
Blank
PROJECT NUMBER • 2018-197
PROJECT STATUS:
COMPLETED

Developing FRDC’s 2020-2025 RD&E Plan

This report covers the second of two CSIRO contributions to the project FRDC 2018-197. This project was reviewing FRDC research objectives through a process that developed alternative scenarios of possible futures relevant to Australian fisheries. Discussed here is the development of a...
ORGANISATION:
Fisheries Research and Development Corporation (FRDC)