Water availability and demand: better forecasts, better management. This project aims to improve Australia’s capability in the provision and use of water forecasts for managing water resources. The current water forecasts are not fully utilised by water agencies as they are not sufficiently comprehensive and advanced. This project expects to achieve a step change in the uptake and utility of hydro-climate forecasts through an extensive partnership of leading researchers and operational agencies ....Water availability and demand: better forecasts, better management. This project aims to improve Australia’s capability in the provision and use of water forecasts for managing water resources. The current water forecasts are not fully utilised by water agencies as they are not sufficiently comprehensive and advanced. This project expects to achieve a step change in the uptake and utility of hydro-climate forecasts through an extensive partnership of leading researchers and operational agencies of hydro-climate forecasting, with federal, state and regional water agencies.Read moreRead less
Delivering robust hydrological predictions for Australia’s water challenges. This project aims to build a virtual hydrological laboratory to identify the best hydrological models that maximise predictive performance in a range of catchments, accounting for their dominant hydrological processes and data availability. New process-informed hydrological model structures will be developed using this virtual laboratory to embody our best understanding of hydrological processes and data from real catch ....Delivering robust hydrological predictions for Australia’s water challenges. This project aims to build a virtual hydrological laboratory to identify the best hydrological models that maximise predictive performance in a range of catchments, accounting for their dominant hydrological processes and data availability. New process-informed hydrological model structures will be developed using this virtual laboratory to embody our best understanding of hydrological processes and data from real catchments. The expected outcomes include major improvements in hydrological predictions for Australian catchments. This project will provide major benefits to irrigators, water authorities and engineers, who rely on hydrological predictions for sustainable water management in the highly-variable, semi-arid Australian climate.Read moreRead less
Effect of faults and barriers on groundwater flow and solute transport. This project will address the role of faults and dykes on groundwater flow and solute transport. Faults and dykes can act as barriers to groundwater flow, yet faults can also be conduits for flow through otherwise impermeable layers. Understanding their role is critical to assessing the impacts of mining, unconventional gas and water resource developments. This project expects to develop new methods to quantify groundwater f ....Effect of faults and barriers on groundwater flow and solute transport. This project will address the role of faults and dykes on groundwater flow and solute transport. Faults and dykes can act as barriers to groundwater flow, yet faults can also be conduits for flow through otherwise impermeable layers. Understanding their role is critical to assessing the impacts of mining, unconventional gas and water resource developments. This project expects to develop new methods to quantify groundwater flow through and along faults and dykes by combining geological, hydraulic and geochemical approaches with detailed 3D numerical models. The expected outcome will be an improved understanding of the role of faults and barriers in subsurface hydrology, and an improved ability to model complex groundwater systems.Read moreRead less
Dynamics of Suppressed Mixing Regimes in Australian Rivers. This study aims to further the fundamental science of turbulent mixing in the context of flow in Australian rivers. The focus is on prolonged low flow conditions which when coupled with warm surface temperatures cause the water column to become thermally stratified which then suppresses turbulent mixing. The extreme scale of the river systems has made investigating the true dynamics of the strongly stratified mixing regimes particularly ....Dynamics of Suppressed Mixing Regimes in Australian Rivers. This study aims to further the fundamental science of turbulent mixing in the context of flow in Australian rivers. The focus is on prolonged low flow conditions which when coupled with warm surface temperatures cause the water column to become thermally stratified which then suppresses turbulent mixing. The extreme scale of the river systems has made investigating the true dynamics of the strongly stratified mixing regimes particularly challenging. By taking world first in-situ measurements of turbulent mixing and undertaking high resolution numerical simulations this study will provide definitive data which will allow correct characterization of the mixing regimes and how they are associated with river flow conditions.Read moreRead less
Understanding Drivers Of Jellyfish Blooms In The Hawkesbury Estuary
Funder
Fisheries Research and Development Corporation
Funding Amount
$196,722.00
Summary
Jellyfish blooms disrupt commercial fisheries around the world and blooms are increasing in frequency and magnitude in some regions (Condon, Pitt et al. 2013). Although the causes of jellyfish blooms are debated, they are frequently linked to anthropogenic pressures, including eutrophication, expansion of coastal infrastructure, and climate change (Pitt et al. 2018). The current jellyfish bloom in the Hawkesbury estuary is more extensive, persistent, and disruptive than previous blooms and .... Jellyfish blooms disrupt commercial fisheries around the world and blooms are increasing in frequency and magnitude in some regions (Condon, Pitt et al. 2013). Although the causes of jellyfish blooms are debated, they are frequently linked to anthropogenic pressures, including eutrophication, expansion of coastal infrastructure, and climate change (Pitt et al. 2018). The current jellyfish bloom in the Hawkesbury estuary is more extensive, persistent, and disruptive than previous blooms and may represent a long-term and sustained change to fishing conditions in the estuary. Some fishers have said they will leave the industry if blooms persist, hence this project is needed to reduce interactions between jellyfish and commercial net fishers and ensure the on-going viability of commercial net fisheries in the Hawkesbury.
The project specifically addresses the FRDC priority call for "Understanding the drivers of jellyfish blooms in the Hawkesbury". We will review the scientific literature and analyse existing data sets on water quality and jellyfish to identify probable environmental drivers of jellyfish blooms in the Hawkesbury estuary, which will enable estuary managers to prioritise which environmental conditions to manage to reduce jellyfish blooms. We will search for novel technical solutions (such as modifying fishing times or locations) that could reduce by-catch of jellyfish, assess potential ways to actively manage jellyfish (through their extraction or biological control), and co-design a long-term jellyfish monitoring program based on world best-practice with estuary managers and fishers to initiate the long-term collection of jellyfish data by stakeholders, which is essential for understanding jellyfish population dynamics and developing predictive models for jellyfish.
The drivers of jellyfish blooms in the Hawkesbury estuary may be linked to recent major floods. Floods are predicted to become more extreme and frequent under climate change. Hence our proposal aligns with FRDC's strategic investment opportunity for improving resilience of fishing in a changing climate. By providing information critical for managing jellyfish populations, our project also meets FRDC's F&D Plan Outcome 1 to "expand environmental management to cover areas other than stock status of target species". Through recruitment, mentoring and career development of a research fellow, our project builds capacity and capability of Australia's fisheries research and development sector (FRDC Enabling strategy IV).
Objectives: 1. Review the environmental drivers of jellyfish blooms, methods used by commercial fishers to manage interactions with jellyfish and methods that could be used to control jellyfish populations. 2. Collate and analyse existing data sets on water quality and jellyfish to identify potential drivers of jellyfish populations 3. Review jellyfish monitoring programs and co-design with stakeholders a fit-for-purpose and on-going jellyfish monitoring program for the Hawkesbury estuary 4. Engage stakeholders to locate relevant data sets and disseminate findings to end-users and beneficiaries Read moreRead less
Assessing risk of oligomictic conditions in sub-tropical water supply lakes. Assessing risk of oligomictic conditions in sub-tropical water supply lakes. This project aims to assess the risk of low rates of mixing in sub-tropical drinking water supply reservoirs, using environmental monitoring and numerical modelling. Emerging evidence suggests sub-tropical drinking water supply reservoirs could transition to low mixing states with increasing age and projected changes in global climate. While th ....Assessing risk of oligomictic conditions in sub-tropical water supply lakes. Assessing risk of oligomictic conditions in sub-tropical water supply lakes. This project aims to assess the risk of low rates of mixing in sub-tropical drinking water supply reservoirs, using environmental monitoring and numerical modelling. Emerging evidence suggests sub-tropical drinking water supply reservoirs could transition to low mixing states with increasing age and projected changes in global climate. While this risk is poorly understood, it could significantly affect the long-term reliability of water supply and potable water treatment costs. Addressing this knowledge gap is expected to develop effective management responses to ensure the long term sustainable use of these water resources.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE220100907
Funder
Australian Research Council
Funding Amount
$434,107.00
Summary
Tracking groundwater variations via 4-dimensional seismic imaging. This project aims to develop an advanced seismic framework to sense subtle subsurface changes related to groundwater variations beneath the Great Artesian Basin. Groundwater storage is subject to climatic and anthropogenic forcing, but modern monitoring tools are not sufficient to capture its detailed response in both time and space. Using novel techniques and extensive seismic recordings, this project expects to generate time-la ....Tracking groundwater variations via 4-dimensional seismic imaging. This project aims to develop an advanced seismic framework to sense subtle subsurface changes related to groundwater variations beneath the Great Artesian Basin. Groundwater storage is subject to climatic and anthropogenic forcing, but modern monitoring tools are not sufficient to capture its detailed response in both time and space. Using novel techniques and extensive seismic recordings, this project expects to generate time-lapse images across the basin in unprecedented resolution to reveal the system's dynamic evolution and a static basin model to aid the interpretation. Potential benefits include improved geophysical techniques for groundwater tracking and enhanced scientific understandings to underpin future groundwater management.Read moreRead less
Vulnerabilities for environmental water outcomes in a changing climate. This project aims to assess the vulnerability of freshwater ecosystems to extended droughts in a variable and changing climate. Governments around the world are investing in the restoration of regulated river systems with environmental water. However, the risks of climate change for environmental water management are seldom considered. This project will model the change in environmental and consumptive water use during exten ....Vulnerabilities for environmental water outcomes in a changing climate. This project aims to assess the vulnerability of freshwater ecosystems to extended droughts in a variable and changing climate. Governments around the world are investing in the restoration of regulated river systems with environmental water. However, the risks of climate change for environmental water management are seldom considered. This project will model the change in environmental and consumptive water use during extended dry periods, and couple this to models of ecological dynamics and failure thresholds. This will improve the success of Australia’s major environmental water programs in sustaining benefits through future multi-year droughts.Read moreRead less
Non-urban water regulation: next generation compliance & enforcement . This project aims to develop the next generation of regulatory technology in non-urban water compliance and enforcement. Effective technologies are needed to make government regulation more efficient, reduce regulatory burdens and improve compliance with complex laws. This project delivers new ways to optimise regulatory technologies that drive innovation, reduce costs and enhance sustainable water use. Expected outcomes incl ....Non-urban water regulation: next generation compliance & enforcement . This project aims to develop the next generation of regulatory technology in non-urban water compliance and enforcement. Effective technologies are needed to make government regulation more efficient, reduce regulatory burdens and improve compliance with complex laws. This project delivers new ways to optimise regulatory technologies that drive innovation, reduce costs and enhance sustainable water use. Expected outcomes include regulatory guidance strategies and training, advances in applied regulatory theory, and innovative technology tools capturing the complexity of water regulation and supporting decision-making. This will provide public resource savings and ensure fairness and effectiveness of water compliance and enforcement.Read moreRead less