RIEL seminar series
Black jewfish: drivers of productivity in a changing environment
| Presenter | Dr Joanne Randall | |
|---|---|---|
| Date |
|
|
| Time |
to
|
|
| Contact person |
RIEL outreach
|
|
| Location |
CDU Casuarina campus, Yellow 1.1.39 and Zoom If you wish to attend this seminar via Zoom please email riel.outreach@cdu.edu.au for a link |
|
| Open to | Public | |
The Black jewfish is a large-bodied Sciaenid that is a key focus of commercial, recreational and Indigenous fishing effort in the Northern Territory. The species has been heavily overfished across its tropical Indo-West Pacific distribution with northern Australia remaining one of the last strongholds. Despite a range of regulatory controls, the species was listed as “Overfished” in the Northern Territory in 2016. Increases in catches in 2017/18 after several poor years were inconsistent with the forecasts based on stock reduction analyses, demonstrating a need for a better understanding of the drivers of fishery productivity. Freshwater outflow in the NT is characterised by high seasonal and interannual variation. As such, understanding the effect of outflows on the condition and physiology of coastal fish species is important for predicting how the fishery will respond to harvest pressure and climatic change. Here I present results of a two-year study which addressed critical knowledge gaps regarding Black jewfish populations and how the physiology of fish changes in response to environmental variability.
This FRDC-funded project is a collaboration among the Research Institute for the Environment and Livelihoods (Charles Darwin University), Australian Institute of Marine Science and the Northern Territory Department of Primary Industry and Resources, working with commercial fishers and the recreational sector.
Dr Jo Randall is a post-doctoral researcher in the Research Institute for the Environment and Livelihoods currently investigating population dynamics and community structure in Black jewfish. Jo has a research background in coastal ecology, macroalgal physiology, underwater acoustics and fisheries and aquaculture both within Australia and overseas.
Related Events
'Culture-based conservation' approach to supporting governance of Indigenous territories
Read more about 'Culture-based conservation' approach to supporting governance of Indigenous territoriesIndigenous Peoples are crucial for the long-term persistence of the Earth’s biodiversity and ecosystem services. In the Philippines, the Indigenous Peoples Rights Act of 1998 protects Indigenous rights to own and manage territories. The forests of Indigenous territories are habitats of the Philippine eagle – a forest eagle that is endemic to the Philippines where it is a national bird and an apex forest predator.
Carbon and water adventures in north Australia
Read more about Carbon and water adventures in north AustraliaWith climate change and increasing land use pressures there is more and more demand for knowledge of carbon dynamics and water use as well as water resource management. Lindsay’s research is focused on providing better understanding of the biophysical environment of tropical land and water systems.
From CCTV to AI
Read more about From CCTV to AIFish farms have historically been a black box in terms of understanding the behavioural needs and preferences of the fish within them, as the only chance to assess what they are up to is when they break the surface. Sunil has been monitoring fish behaviour below the surface of farms for 35 years.
