Aquaculture-Community Futures: North West Tasmania
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.
Non-market values to inform decision-making and reporting in fisheries and aquaculture – an audit and gap analysis
Most Australian fisheries policies require that fisheries management take account of the cumulative effect of all human users of marine resources, including professional, recreational and Indigenous Australian fishers. The triple bottom line (TBL) approach is the general framework used to assess performance against economic, social, and environmental dimensions. TBL requires articulation of these broad values, but these may be qualitatively assessed. Significant progress has been made in incorporating some of these elements into fisheries management decision, particularly prioritising different objectives of fishery management [e.g. 1, 2]. In some cases, development of semi-quantitative approaches have been used to assist in decision-making across these multiple dimensions [e.g. 3], including in some cases indigenous value [e.g. 4]. Recent research has also extended this focus to develop a robust articulation of Indigenous Australian customary fishing values to enable their inclusion when developing fisheries management policies [5].
Optimal decisions require the trade-off between costs and benefits to be considered. TBL approaches do not explicitly consider this trade-off, resulting in challenges in identifying optimal outcomes. Where these costs and benefits are expressed as explicit monetary values, assessing the trade-off requires deducting the expected costs from the expected benefits (commonly referred to as cost-benefit analysis (CBA)).
However, in fisheries, many costs and benefits do not have an explicit monetary value. Hence, decisions about the use and management of marine resources increasingly requires objective information on the non-market value of benefits (and costs). Some attention has been focused on the estimation of non-market values of recreational fishing [e.g. 6, 7], although only limited attempts to-date have been made to use these values in supporting management decision making [e.g. 8]. Many other values have not been quantified, and their use in fisheries management has not been fully explored.
Final report
The project identified thirteen types of non-market values that fisheries and aquaculture managers considered as potentially important to their decision making. Of these, the top four involved values related to users of the fisheries resources, including fisher satisfaction, values to Indigenous Australian fishers, and the value of fish and experience to recreational fishers. The next four involved impacts of fishing on others, including habitats, species, local communities and other users of the marine environment.
The gap analysis identified that recent values for most of the values of potential use to fisheries and aquaculture management were unavailable. This limits the role of benefit transfers and identifies a need for further primary studies of non-market values.
Maximising industry representational capacity and capability through improved skills and knowledge
The Tasmanian seafood industry operates in an exceptionally complex environment, with a diverse range of stakeholders who have input and influence over the decision making process. Furthermore, an increasing number of issues and challenges threaten the ongoing viability of the industry, notable examples include large scale harmful algal blooms on Tasmania's East Coast, community and industry acceptance of salmon expansion and political influence overriding a scientific evidence base. Industry associations and the volunteer Directors of such organisations are tasked with steering the Tasmanian seafood industry towards a sustainable and prosperous future. Fundamental to the success of seafood sector associations is sound governance, fiscal responsibility and strategy and risk preparedness. Directors of not-for-profit associations must clearly understand their role and legal obligations of being a Director, and their role in steering industry in a positive forward projection.
Governance, fiscal responsibility and strategy and risk preparedness are fundamental skills and knowledge that all Directors must be aware of and constantly reminded of, and it is important to provide volunteer Directors the opportunity to up-skill or re-skill in this important area. Noting that the Tasmanian Rock Lobster Fishemen's Association and Oysters Tasmania are about to finalise new Directors, it is timely that TSIC run professional development opportunities to support these and other sector association representatives.
The Australian Institute for Company Directors offer short, one day courses tailored to the Tasmanian seafood industry needs.
Final report
• Governance for Directors
• Finance for Directors
Participants gained a better understanding of best practice governance and how to interpret and understand financial reports.
The skills gained will provide greatly improved capacity and capability within Tasmanian seafood sector associations and the Tasmanian Seafood Industry Council (TSIC).
World Fisheries Congress 2020 - Sharing our Oceans and Rivers: a 2020 vision for the world’s fisheries
e-fish - An Integrated Data Capture and Sharing Project
SafeFish 2018-2021
Maintaining and enhancing market access for Australian seafood is critical for future industry growth. SafeFish makes a significant contribution to this by carrying out three types of projects:
1. Food safety incident responses. The SafeFish partners come together during each incident to provide industry and government with immediate technical information required to respond to the incident. Subsequently, technical input is provided to update policies for prevention of similar incidents and respond to them should they recur. Appropriate technical responses reduce the impact of food safety incidents and ensure better outcomes for future management.
2. Technical input to inter-government consultations on food regulations and market access. It is essential for the Australian seafood industry to participate in consultations such as Codex to ensure that proposed new, or modified, regulations are pragmatic and cost-effective for the Australian seafood industry. It is far easier to influence standards under development than after they have been finalised. Similarly, it is essential for the seafood industry to stay in close contact with Food Safety Australia and New Zealand (FSANZ) when domestic food safety regulations are reviewed.
3. Proactive research, risk analyses and training. The safety of Australian seafood is not negotiable in domestic and international markets. Over recent years SafeFish has conducted many activities to assist the industry anticipate and minimize food safety risks. The objective of the activities has always been to identify and mitigate risks before they cause a problem, or to grow knowledge to enable us to improve our risk management in a cost effective manner.