14 results
Adoption
PROJECT NUMBER • 2017-049
PROJECT STATUS:
COMPLETED

Monitoring abalone juvenile abundance following removal of Centrostephanus and translocation

A new system of Abalone recruitment modules (ARMs) have proven to be successful in collecting juvenile abalone in Tasmanian waters. This design was subsequently transferred to the Eastern Zone, Victoria, where IMAS staff and Eastern Zone Abalone Industry Association (EZIZA) members installed ARMs at...
ORGANISATION:
University of Tasmania (UTAS)
Industry
PROJECT NUMBER • 2017-048
PROJECT STATUS:
COMPLETED

Improving mortality rate estimates for management of the Queensland Saucer Scallop fishery

This research was undertaken on the Queensland saucer scallop (Ylistrum balloti) fishery in southeast Queensland, which is an important component of the Queensland East Coast Otter Trawl Fishery (QECOTF). The research was undertaken by a collaborative team from the Queensland Department...
ORGANISATION:
Department of Primary Industries (QLD)
Environment
Environment
PROJECT NUMBER • 2019-036
PROJECT STATUS:
COMPLETED

Implementation of dynamic reference points and harvest strategies to account for environmentally-driven changes in productivity in Australian fisheries

The need to adapt stock assessment methods and harvest strategies to explicitly and justifiably account for shifts in productivity has been recognised by the AFMA Resource Assessment Group for the Southern and Eastern Scalefish and Shark Fishery (SESSF), not least as a result of clearly evident...
ORGANISATION:
Pisces Australis Pty Ltd
Environment
PROJECT NUMBER • 2018-120
PROJECT STATUS:
COMPLETED

NCCP: Population dynamics and Carp biomass estimates

This study was undertaken by the Arthur Rylah Institute for the Department of Environment, Land, Water and Planning. Carp (Cyprinus carpio) is Australia’s most invasive pest fish. To facilitate more effective management, the Australian Government is considering release of a Carp herpesvirus...
ORGANISATION:
Department of Environment Land Water and Planning (DELWP)

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.