46 results
Environment
PROJECT NUMBER • 2017-175
PROJECT STATUS:
COMPLETED

Linking ecosystem services to the profitability of prawn fisheries linked to 2017-188

The FRDC Project 2017-175 Linking ecosystem services to the profitability of prawn fisheries delivered new methods, data and indicators to a case study on prawn fisheries in a broader project entitled Lifting farm gate profits: the role of natural capital accounts (RnD4Profit-16-03-003). This FRDC...
ORGANISATION:
CSIRO Land and Water Canberra

Opportunities and impacts of range extending scalefish species: understanding population dynamics, ecosystem impacts and management needs

Project number: 2018-070
Project Status:
Completed
Budget expenditure: $249,587.00
Principal Investigator: Sean Tracey
Organisation: University of Tasmania
Project start/end date: 31 May 2019 - 30 Nov 2020
Contact:
FRDC

Need

Species-level responses to ocean warming is a priority research area as they underpin the structure and function of marine ecosystems and the productivity of fisheries that operate within them.
There are a number of range extending species that have become increasingly abundant in Tasmanian waters, providing new fishing opportunities for recreational and, to a lesser extent, commercial fishers. Species in this group include Pink Snapper, King George Whiting and Yellowtail Kingfish. While King George Whiting are known to spawn off the north coast it is unclear as to whether the other species have or are likely to become established as self-sustaining populations in Tasmanian waters or simply persist as spill-over from populations that are centered off mainland Australia. If the former is the case, it will be especially important to consider population attributes such as growth, mortality and reproductive dynamics relevant to the Tasmanian populations when developing and refining management arrangements to maximise the opportunities these 'new' species bring.

In addition, the broader ecosystem impacts of such range extending species, including competition with resident species at similar trophic levels, are unknown but could have consequences for other recreationally and commercially important species. Understanding these relationships will have benefits for the assessment and management of the Tasmanian recreational fishery more generally.

Objectives

1. Develop a program for ongoing collection of biological samples and data of key range-shifting fish species using citizen science initiatives engaging with the recreational fishing community.
2. Develop geographically discrete life-history parameters for key range-shifting fish species in Tasmania to inform management decisions.
3. Determine the diet composition of key range-shifting fish species to refine parameterisation of an ecosystem model.
4. Utilise the Atlantis ecosystem model framework to predict ecological impacts of increasing abundance of key range-shifting fish species in Tasmania.
5. Develop species distribution models that utilise oceanographic climate change projections to predict the future presence and persistence of the key target species in Tasmania.

Final report

ISBN: 978-1-922708-28-1
Author: Alexia Graba-Landry
Final Report • 2022-05-12 • 13.57 MB
2018-070-DLD.pdf

Summary

This work set out to quantify the biology and diet of three key range-shifting species in Tasmania with both recreational and commercial fishery value. The project was heavily reliant on engagement from the recreational fishing community and multiple citizen science initiatives, as well as historical data.

The information collected was used in modelling to predict how suitable habitats for each species may shift under future climate change projections. The work also indicated the potential changes to the ecosystem (such as food web) if these species’ ranges were to move.

A South Australian gulfs and coastal ecosystem model to optimise multi-species fisheries management in a changing environment

Project number: 2018-011
Project Status:
Current
Budget expenditure: $218,932.00
Principal Investigator: Simon D. Goldsworthy
Organisation: University of Adelaide
Project start/end date: 3 Jun 2019 - 17 Dec 2020
Contact:
FRDC

Need

The SA State Government has made a commitment to reform the Marine Scalefish Fishery (MSF) that aims to provide long-term sustainability of key stocks for both recreational and commercial fisheries, and unlock the industries economic potential. The key reforms include a voluntary buy-back scheme targeting the removal of at least 30% of commercial licences and the introduction of new zoning and quota management regulations. The timeframe for the reforms will be determined in consultation with the industry. Details on the implementation strategy have yet to be developed, but will need to be underpinned by extensive stakeholder consultation and backed by research that provides confidence that among the approaches considered, those chosen will best deliver the intent of the reforms.

This project aims to develop an SA Gulfs and Coastal ecosystem model to provide a Management Strategy Evaluation (MSE) tool to assess and optimise a range of reform scenarios. The project will link in closely with FRDC 2017/014 (Informing structural reform in the MSF), utilising many of its key outputs, including time series of spatial distribution of catch and effort, social-economic performance, and reform implementation scenarios. This project also will extend the investigation by integrating environmental time-series data to evaluate changes in productivity over time, identified as a potential factor in declining fisheries catches in the GSV ecosystem (FRDC 2013/031). Identifying the causes of productivity loss and its impact on fish production are important to resolve, especially in the context of the MSF reforms. Ultimately, the project aims to provide decision support tools to assess and evaluate the performance of diverse fisheries management strategies, and how these may perform under varying production regimes. Such an approach will provide a platform to evaluate and optimise the effectiveness of management strategies, and help ensure the fishery reforms achieve their key objectives.

Objectives

1. Develop an SA Gulfs and Coastal Ecosystem model to provide a MSE tool to inform and optimise multi-regional management, quotas for multi-species fisheries and multi-sector harvest strategies
2. Use the model to run scenarios to assess, evaluate and optimise Marine Scalefish Fishery reform options
3. Assess potential production loss issues, and evaluate how different MSF reform options may perform under different future production scenarios

Seal-fisher-ecosystem interactions in the Lower Lakes and Coorong: understanding causes and impacts to develop longer-term solutions

Project number: 2018-036
Project Status:
Current
Budget expenditure: $335,725.00
Principal Investigator: Jason Earl
Organisation: SARDI Food Safety and Innovation
Project start/end date: 28 Feb 2019 - 27 Feb 2022
Contact:
FRDC

Need

The cross-Government LNFSWG has been working with stakeholders since 2015 to address ongoing industry and community concerns over the economic impacts of fur seals on the LCF, including depredation of catches and damage to fishing gear. Despite recent mitigation initiatives, reports from industry suggest that the seal-fisher conflict and associated economic impacts have intensified in recent years. In an effort to reduce financial pressure on licence holders, the SA Government (PIRSA Fisheries and Aquaculture) has waived cost-recovered licence fees for the net sector of the fishery, as well as implemented other more flexible management arrangements, for the 2015/16, 2016/17, 2017/18 and 2018/19 fishing seasons. Although these measures have been welcomed by industry, it is not clear whether the current level of support for fishers is adequate or how to evaluate the costs and benefits of alternative mitigation options or management interventions.

There has also been industry and community concerns about the potential impact that seals are having on waterbirds, fish populations, and on the broader Lakes and Coorong ecosystem, with some sectors advocating for seal numbers to be managed to mitigate these perceived impacts.

There is a need for reliable, quantitative information on the nature and extent of the economic and ecological impacts of seals in Lakes and Coorong region, and the factors that attract seals to the region and drive the seasonal increase in fur seal numbers. This information will support processes to identify, prioritise and develop practicable and cost-effective long-term policy/management strategies to manage long-nosed fur seal numbers and mitigate their impacts in the Lakes and Coorong region, during and after the project.

Objectives

1. Assess the economic impact of seal interactions on Lakes and Coorong commercial gillnet fishers.
2. Assess the ecological impacts of seals on the Lower Lakes and Coorong ecosystem.
3. Assess the spatial and temporal use of the Lower Lakes and Coorong region by seals to identify key haul-outs, movement corridors, foraging areas and overlap with fishing effort.
4. Identify options to manage seal numbers and evaluate their costs and benefits to mitigate their impacts.
Environment
PROJECT NUMBER • 2015-024
PROJECT STATUS:
CURRENT

Managing ecosystem interactions across differing environments: building flexibility and risk assurance into environmental management strategies

Summary The overarching aim of this research was to provide an improved understanding of the environmental interactions of Atlantic Salmon farming and to provide recommendations to both government and industry on monitoring and management strategies that are appropriate to the level of risk...
ORGANISATION:
University of Tasmania (UTAS)
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