Evaluating the economic and environmental return on investment of modern fish screens
This project is about helping people look after fish and farms.
Most water diversions in Australia are either unscreened or use outdated ‘trash racks’. These are poor performers – providing very little protection against the entrainment of native fish and debris. As a result, millions of native fish are lost from our waterways ever year and farmers needlessly suffer debris in their irrigation systems, which can damage pumps, clog filters and block sprinklers.
Modern fish-protection screens are available for use in Australia. They keep fish and debris where they belong – in the river and out of irrigation infrastructure. They have the potential to provide significant, widespread benefits for both biodiversity and businesses. Early accounts from farmers at over 20 showcase sites across the Murray-Darling Basin show that farmers are already saving time and money through reduced labour and maintenance costs. However, this evidence is largely anecdotal. There is a real need to rigorously document and communicate the environmental and economic benefits of modern screens. Being able to document these benefits will enable screening to move from an international best practice which is poorly applied in Australia, to common-practice in Australia.
The proposed project fills a critical knowledge gap in the evolution of modern fish screening in Australia, by recording and articulating the public and private value proposition of modern screens across a range of farming systems. Doing so will (1) improve farmer awareness and understanding of modern screening technology; (2) inform farmers’ decision-making, to maximise returns on investment; and, (3) guide prioritisation and integration of screening in large-scale conservation and fisheries management policy. Ultimately, this project aims to support adoption of screens where they are most beneficial to deliver benefits for rivers, fish and farms.
Exploring changes in recreational fishing participation and catch due to COVID-19 – A WA case study
Robust data is critical to ensure sustainability and demonstrate the social and economic benefits of recreational fisheries. Traditional data collection methods can be cost-prohibitive, especially for fisheries operating across large scales, or those requiring real time information. Challenges associated with data collection have been highlighted during COVID-19, where travel restrictions have changed the dynamics of regional tourism and associated recreational fishing. Increased domestic travel is delivering economic benefits to many regional locations, however, there have been concerns about increased effort and the longer-term impact of increased catches on stock sustainability.
Federal and State Governments have implemented a range of policy responses during COVID-19, with support measures and stimulus packages for businesses, including tourism. Many jurisdictions have implemented measures to assist commercial and recreational fishing sectors, while few jurisdictions have implemented changes to recreational fishing regulations. In Western Australia, recreational fishing rules were revised to address sustainability concerns for valuable stocks of demersal finfish. This policy shift was supported by evidence from ongoing monitoring and stakeholder engagement. Further reviews will be conducted following the current state-wide survey (September 2020–August 2021), which will provide estimates of participation, effort, catch and expenditure in regional Western Australia attributed to local and non-local residents and to recreational fishing.
While intensive survey methods are repeated periodically, the adoption of indicators between these intervals can inform ongoing assessments. Social and economic indicators, such as those obtained from administrative data or record of sales, have the potential to provide rapid assessment of changes in participation, fisher demographics and catches. While benchmarking these data against traditional surveys may be required, there is a need to investigate a range of data sources that could measure change and inform rapid assessments.