There is opportunity for the WA Salmon Fishery in SA to expand into emerging national and international seafood markets, and the possibility that the stock may be more heavily exploited in the future. Given the shared nature of the resource among commercial, recreational, Charter Boat and indigenous sectors, it is important that appropriate management is place to ensure that any expansion of the fishery does not compromise the overall sustainability of the resource. This includes ensuring the species remains one of the premier inshore sportfish for recreational anglers in SA.

The current level of biological information that exists for WA Salmon is dated (Malcolm 1960; Cappo 1987) and largely focuses on the coastal component of the stock in SA. Contemporary information on the fine-scale population structure and fisheries biology of the WA Salmon stock in South Australian waters is needed to enable improved assessment of stock status and fisheries management and inform appropriate resource sharing among sectors.

The current ‘sustainable’ status assigned to WA Salmon stock in SA is predominantly based on commercial catch and effort data integrated with limited information from the recreational and Charter Boat sector. Given the importance of WA Salmon to recreational fishers and the capacity for the commercial sector to increase production there is a need to develop a fishery-independent means of assessing the relative abundance to enhance future assessments of stock status and assess whether the current management arrangements for the commercial sector is appropriate.

Given the multi-sectoral use of the resource and SA’s government commitment to maintaining quality recreational fishing opportunities; providing greater certainty for industry; and ensuring the continued supply of commercially harvested premium seafood, there is a need to develop a representative steering committee that is committed to achieving the objectives, outcomes, adoption and extension of this project.

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.

Commercial in confidence. To know more about this project please contact FRDC.

From television cooking shows to social media, an intensified media focus on food has increased public visibility of issues of food provenance and sustainability in recent years. This has profoundly changed the communications landscape in which Australian food industries operate. There is now increased scrutiny and criticism of food industry activities not just from the ‘usual suspects’ (such as environmental activists), but also from a range of new players: celebrity chefs, food bloggers, social media ‘clicktivists’, and other media influencers. On the issue of sustainable seafood, these influencers have often been successful in securing a greater share of media ‘voice’ than industry itself. This is concerning because influencers’ messages are not always aligned with industry claims or with Government sustainability assessments. We know from international research that food celebrities and food media can either encourage or deter seafood consumption depending on the message (Bowman & Stewart 2013), but we don’t yet know what the impact is of Australian media, and media influencers, on consumer purchasing intentions, their attitudes and beliefs regarding the sustainability of Australian seafood, and the social acceptability of the industry. Aligning with National Priority 1 and its focus on industry communications strategy, this project will examine media coverage of Australian domestic fisheries sectors to identify: the messages about sustainable seafood prominent in Australian media; the media influencers, strategies, and professional networks underpinning their circulation; and how these messages are understood and interpreted by consumers. This knowledge will be used to inform communication strategies that will ensure clearer sustainability messages, reduce consumer confusion, and improve consumer trust in the Australian seafood industry.

Need
The National Carp Control Plan (NCCP), operating within the Fisheries Research and Development Corporation (FRDC), is developing a plan for potential release of the virus known as Cyprinid herpesvirus 3 (CyHV-3) to control invasive common carp, Cyprinus carpio, in Australian freshwater environments.

If the carp virus is approved for release, major carp mortality events are likely. It is necessary to better understand the potential ecological consequences of such events, and hence to inform clean-up strategies for carp biomass post-release. One potential risk is hypoxia or anoxia in the river system associated with microbial degradation of carp carcasses in accumulation hotspots. As carp inhabit a range of habitat types, including reservoirs, lakes, river and wetlands it is necessary to understand the oxygen dynamics in each of these habitats so that the risk can be adequately managed.

Objectives
The aim of this project is to predict the impact of mass carp mortality on the dissolved oxygen concentration of wetlands, rivers and floodplain habitats. This requires assessment of how the key processes that affect oxygen in these different environments respond to changes in hydrologic flushing, temperature and other environmental attributes, and consideration of the likelihood of carp accumulation.

This modelling will be used to inform the cost-benefit analysis of the carp control program of FRDC, aid assessment of what ecological and infrastructure assets are at greatest risk, and determine whether flow can be used as a strategy to re-aerate water in the event of hypoxia.