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PROJECT NUMBER • 2022-075
PROJECT STATUS:
COMPLETED

National Workshop to develop a regional collaborative plan to control the invasive Longspined Sea Urchin (Centrostephanus rodgersii)

The 2023 National Centrostephanus Workshop was convened by the Department of Natural Resources and Environment Tasmania. The workshop brought together 130 representatives from industry, government, research, Aboriginal communities, recreational fishing groups, and the community to: • Identify...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
Industry
Environment

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.

Environment
PROJECT NUMBER • 2017-023
PROJECT STATUS:
COMPLETED

ESD risk assessment for under-utilised species to facilitate structural reform of South Australia's commercial Marine Scalefish Fishery

South Australia’s Marine Scalefish Fishery (MSF) is facing a number of complex issues that are affecting business profitability and stock sustainability. One particular issue relates to the long-term reliance of the fishery on the three primary finfish species of King George Whiting, Snapper...
ORGANISATION:
SARDI Food Safety and Innovation
Environment
PROJECT NUMBER • 2017-135
PROJECT STATUS:
COMPLETED

NCCP: essential studies on cyprinid herpesvirus 3 (CyHV-3) prior to release of the virus in Australian waters

This project, undertaken by CSIRO, aimed to determine the most important form of transmission of CyHV-3 to Cyprinus carpio (common carp). This was addressed through experiments to determine: (1) The relative amounts of virus in the skin and mucus of infected fish vs shed...
ORGANISATION:
CSIRO Australian Animal Health Laboratory
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