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Developing a decision support system for the management of road runoff for water quality protection. Multiple stakeholders share a vested and often significant financial commitment to ensure water quality standards. These industries, in turn, are vital to the social and economic sustainability of many rural communities in Australia. Recent climatic trends of increasing drought episodes and related natural disasters such as bushfires are expected to increase the delivery of sediments and associat ....Developing a decision support system for the management of road runoff for water quality protection. Multiple stakeholders share a vested and often significant financial commitment to ensure water quality standards. These industries, in turn, are vital to the social and economic sustainability of many rural communities in Australia. Recent climatic trends of increasing drought episodes and related natural disasters such as bushfires are expected to increase the delivery of sediments and associated pollutants to streams. The proposed DSS will allow testing of various management scenarios with respect to road position and layout, thereby providing a planning and management tool, and a method to educate the practitioners involved in environmental management in Australia. Read moreRead less
Riparian rehabilitation and ecohydraulics: interactions between flow, sediment, vegetation and bank erosion in longstem tubestock rehabilitation works. Riparian lands are important for maintaining viable ecosystems, improving water quality and reducing sediment yields in rivers and streams. Research in Australia has shown that streambank erosion is the most significant processes in the continuing physical and ecological degradation of riparian zones. The recently developed longstem tubestock sys ....Riparian rehabilitation and ecohydraulics: interactions between flow, sediment, vegetation and bank erosion in longstem tubestock rehabilitation works. Riparian lands are important for maintaining viable ecosystems, improving water quality and reducing sediment yields in rivers and streams. Research in Australia has shown that streambank erosion is the most significant processes in the continuing physical and ecological degradation of riparian zones. The recently developed longstem tubestock system has shown promise in controlling streambank erosion using native vegetation. However, rehabilitation practices rely on ad-hoc recipes without a thorough scientific understanding of near-bank processes. This research will fill this gap by combining field and laboratory experiments on tubestock plantings in order to develop guidelines and predictive tools for riparian zone management.Read moreRead less
A Stochastic Downscaling Framework for Catchment Scale Climate Change Impact Assessment. We propose a framework for climate change impact assessment at the catchment scale, that can both assess the change in catchment yield, as well as refine management policies to mitigate likely impacts. A key aim is to represent the full uncertainty in the simulated streamflow, thus enabling a risk-based comparison of current policies with those for climate change conditions. Given the importance of this rese ....A Stochastic Downscaling Framework for Catchment Scale Climate Change Impact Assessment. We propose a framework for climate change impact assessment at the catchment scale, that can both assess the change in catchment yield, as well as refine management policies to mitigate likely impacts. A key aim is to represent the full uncertainty in the simulated streamflow, thus enabling a risk-based comparison of current policies with those for climate change conditions. Given the importance of this research to the availability of water under a climate change scenario, this proposal has been listed under the ARC's Research Priority 1: 'An Environmentally Sustainable Australia', with the specific priority goals being 'Water - A Critical Resource', and 'Responding to climate change and variability'.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668400
Funder
Australian Research Council
Funding Amount
$100,000.00
Summary
A high-throughput stable isotope ratio mass spectrometer for water resource management and climate change studies. Cave speleothems are highly sensitive to climate and are widely used to investigate past climate variability. Many researchers in Australia are now employing speleothems to find out more about the long-term behaviour of the Australian climate system, especially regarding ENSO. However, progress is inhibited by a lack of appropriate instrumentation capable of meeting the unique deman ....A high-throughput stable isotope ratio mass spectrometer for water resource management and climate change studies. Cave speleothems are highly sensitive to climate and are widely used to investigate past climate variability. Many researchers in Australia are now employing speleothems to find out more about the long-term behaviour of the Australian climate system, especially regarding ENSO. However, progress is inhibited by a lack of appropriate instrumentation capable of meeting the unique demands of speleothem research. Our new mass spectrometer will provide precise, rapid and low-cost isotope analyses of speleothem samples, and in doing so generate exciting and important palaeoclimate data, particularly in the area of pre-instrumental rainfall histories.Read moreRead less
Stable water isotopic simulation and analysis to improve Earth System models and deliver better predictions of Australian water resource vulnerability. As Australia's challenges in environmental sustainability rival those anywhere on Earth, we must be clever in our diagnosis of susceptibility and insightful in proposed remedies. Climate change and variability have impacts on people and society that must be managed effectively whatever their causes. Of importance to Australia is the availabilit ....Stable water isotopic simulation and analysis to improve Earth System models and deliver better predictions of Australian water resource vulnerability. As Australia's challenges in environmental sustainability rival those anywhere on Earth, we must be clever in our diagnosis of susceptibility and insightful in proposed remedies. Climate change and variability have impacts on people and society that must be managed effectively whatever their causes. Of importance to Australia is the availability of water for drinking and agriculture. The new, interdisciplinary ARC network for Earth System Science provides models for novel and synergistic research such as naturally occurring water isotopes as a tool for improving predictive skill and confidence. We exploit these and leverage international programs to improve regional hydro-climate and water resource understanding in Australia.Read moreRead less
Restoring hydrological connectivity of surface and ground waters: Biogeochemical processes and environmental benefits for river landscapes. This project examines the restoration of lateral hydrological connectivity to improve floodplain structure and function. The connections between stream flows and both shallow groundwaters and floodplains are critical in sustaining river landscapes. Degrading land and water management practices compounded by natural climatic extremes have severed this link. ....Restoring hydrological connectivity of surface and ground waters: Biogeochemical processes and environmental benefits for river landscapes. This project examines the restoration of lateral hydrological connectivity to improve floodplain structure and function. The connections between stream flows and both shallow groundwaters and floodplains are critical in sustaining river landscapes. Degrading land and water management practices compounded by natural climatic extremes have severed this link. Restoring hydrological connectivity is vital for replenishing groundwater storage and increasing base flows that affect fundamental riverine processes. Using an innovative approach to sustainable agriculture, our project unites multidisciplinary scientific and industry expertise to investigate the biogeochemical and biophysical effects of secondary floodplain channels and in-stream structures on riverine groundwater processes.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0453434
Funder
Australian Research Council
Funding Amount
$395,077.00
Summary
A new airborne facility for environmental, hydrological, atmospheric and oceanic research: high resolution measurement of soil moisture, temperature and salinity. This proposal seeks to establish a new national capability for airborne remote sensing of key environmental variables. It will enable high-resolution mapping of near-surface soil moisture, land surface salinity and temperature, and ocean surface salinity and temperature. It will be a new tool for hydrologic, atmospheric and oceanic r ....A new airborne facility for environmental, hydrological, atmospheric and oceanic research: high resolution measurement of soil moisture, temperature and salinity. This proposal seeks to establish a new national capability for airborne remote sensing of key environmental variables. It will enable high-resolution mapping of near-surface soil moisture, land surface salinity and temperature, and ocean surface salinity and temperature. It will be a new tool for hydrologic, atmospheric and oceanic researchers, providing unprecedented detail on characteristics critical to our understanding and management of the environment. The small instrument size and weight will enable use of a light aircraft as the observing platform, providing the national (and international) research community with an affordable tool, hitherto unavailable.Read moreRead less
Computer simulation and field application of tidal buffering and sub-surface alkaline barrier techniques to enhance acid sulphate soils management. In low-lying coastal areas, groundwater drawdown due to deep flood mitigation drains and prolonged droughts has exacerbated sub-surface pyrite oxidation, forming sulphuric acid. The distribution of acid following rainfall affects soil-water quality. The pressures of urban development in the Shoalhaven floodplain (civil infrastructure, agriculture, aq ....Computer simulation and field application of tidal buffering and sub-surface alkaline barrier techniques to enhance acid sulphate soils management. In low-lying coastal areas, groundwater drawdown due to deep flood mitigation drains and prolonged droughts has exacerbated sub-surface pyrite oxidation, forming sulphuric acid. The distribution of acid following rainfall affects soil-water quality. The pressures of urban development in the Shoalhaven floodplain (civil infrastructure, agriculture, aquaculture and recreational industries) necessitate the accurate prediction of acid migration. Therefore, the key challenge will be the development of comprehensive numerical models, which include complex estuarine hydrogeology and tidal dynamics, supported by field monitoring. Using these models, the novel concepts of 2-way floodgates that promote tidal flushing and the effectiveness of sub-surface alkaline barriers can be tested in the Shoalhaven, and subsequently applied globally.Read moreRead less
Drains in acid sulfate soils: behaviour and management for optimal water quality. Water draining from acid sulfate soil (ASS) into rivers via drains is often severely polluted, resulting in massive fish kills and chronic environmental and economic damage. Effective drain management techniques to minimise the export of acidity and deoxygenating drain oozes will be developed. The basic processes that affect hydraulic functioning, acidity and toxic drain ooze export in ASS drainage systems will be ....Drains in acid sulfate soils: behaviour and management for optimal water quality. Water draining from acid sulfate soil (ASS) into rivers via drains is often severely polluted, resulting in massive fish kills and chronic environmental and economic damage. Effective drain management techniques to minimise the export of acidity and deoxygenating drain oozes will be developed. The basic processes that affect hydraulic functioning, acidity and toxic drain ooze export in ASS drainage systems will be addressed. This project will provide the basis for the environmentally sound management of these drains. The technology developed here will be applicable throughout Australia and can be exported overseas, especially to south-east Asia.Read moreRead less
A new strategy for design flood estimation in a nonstationary climate. Evidence suggests that global warming will result in an increase in the frequency and/or magnitude of heavy rainfall, leading to flooding with potentially devastating consequences. This study provides a renewed focus on design flood estimation that takes into account a changing climate where assumptions of stationarity are no longer tenable.