Opportunities and impacts of range extending scalefish species: understanding population dynamics, ecosystem impacts and management needs
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.
Final report
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.
Engagement for Success: evaluation of engagement events to inform industry management strategies
Commercial fisheries and aquaculture activities with insufficient levels of social support can negatively affect industry member well-being and contribute to restricted resource access. More & appropriate engagement is needed to improve stakeholder and community trust & support, both with those affected by industry activity, and with those who affect industry activity (i.e. decision-makers and influencers).
This project addresses the need to ensure that the range of engagement activities and strategies undertaken by organisations and operators within fisheries and aquaculture are effective at:
- building relationships and trustworthiness;
- understanding concerns and needs arising from industry activity; and
- influencing preferences and decisions.
Limited evaluation has been undertaken regarding the effectiveness of engagement strategies and activities in meeting predefined goals. Similarly, limited opportunities exist to transfer knowledge between industry organisations of successful and future engagement practice; or to support improved return on investment of engagement strategies.
The NSW Fishing Industry has a need to improve relationships and trustworthiness with key stakeholders, and to achieve specific outcomes for PFA members, which include; improve social license by industry taking the lead on its own imagery, and an increase in the consumption and variety of NSW seafood.
In addition, there is limited feedback on whether communication strategies about to embark on will be effective at achieving the PFA’s desired outcomes, and there is information to help develop long term engagement strategies and direct limited resources to the most effective activities.
Therefore, there is a need to select a range of community engagement strategies and activities, and evaluate these against predefined goals. Engagement successes need to be extended to other industry organisations,
and if appropriate, decision support materials to be developed to extend knowledge adoption of the findings and materials.