Improved Landfill Barrier Design for Changing Climates. The proposed research project will develop advanced methods and guidelines for practising engineers for improved engineering and design of waste containment barrier systems, leading to improved protection of groundwater resources and the environment and sustainable development of the country. The project will contribute to the priority area of building an environmentally sustainable Australia with a specific focus on water as a critical re ....Improved Landfill Barrier Design for Changing Climates. The proposed research project will develop advanced methods and guidelines for practising engineers for improved engineering and design of waste containment barrier systems, leading to improved protection of groundwater resources and the environment and sustainable development of the country. The project will contribute to the priority area of building an environmentally sustainable Australia with a specific focus on water as a critical resource.Read moreRead less
Arsenite oxidation by a novel bacterium that is a candidate for arsenic bioremediation. The arsenic munching microbe NT-26 could help in the fight to clean up arsenic-contaminated mining waste and drinking water. Arsenic poses an environmental problem in countries such as Australia, USA and Canada owing primarily to mining activities. The problem in countries such as Bangladesh and West Bengal are even more serious as these people are dying of arsenic-related diseases as they rely on water conta ....Arsenite oxidation by a novel bacterium that is a candidate for arsenic bioremediation. The arsenic munching microbe NT-26 could help in the fight to clean up arsenic-contaminated mining waste and drinking water. Arsenic poses an environmental problem in countries such as Australia, USA and Canada owing primarily to mining activities. The problem in countries such as Bangladesh and West Bengal are even more serious as these people are dying of arsenic-related diseases as they rely on water containing arsenic as their primary source of drinking water. The outcomes of this research should provide the necessary information for removing arsenic from all types of waters.Read moreRead less
Enhancing the performance of existing industrial enzymes through the application of new chemical modification technology. Enzymes have many uses in industry, replacing undesirable chemicals which adversely effect human & animal health & the environment. Enzymes offer advantages in effectiveness, biodegradability, specificity and safety. The concern with enzymes, in industrial applications, is that enzyme performance is degraded by a harsh chemical and/or physical environment. The aim of this stu ....Enhancing the performance of existing industrial enzymes through the application of new chemical modification technology. Enzymes have many uses in industry, replacing undesirable chemicals which adversely effect human & animal health & the environment. Enzymes offer advantages in effectiveness, biodegradability, specificity and safety. The concern with enzymes, in industrial applications, is that enzyme performance is degraded by a harsh chemical and/or physical environment. The aim of this study is to improve the performance of industrially significant enzymes by enhancing resistance to chemical & physical degradation or inactivation. This will be achieved by modifying the enzymes using new technology that we have developed. This will improve cost effectiveness of existing industrial enzymes & create opportunities for new uses of enzymes.Read moreRead less
An innovative strategy for stormwater remediation and reduction of contaminant supply from catchments. Many urbanised harbours world-wide are polluted and the main source is stormwater. Currently, emphasis is to remove gross pollutants from stormwater using numerous devices scattered through the catchment. In a radical shift from traditional approaches, we will identify primary contaminant sources in the catchment for later targeted education and regulation and a single remediation device will r ....An innovative strategy for stormwater remediation and reduction of contaminant supply from catchments. Many urbanised harbours world-wide are polluted and the main source is stormwater. Currently, emphasis is to remove gross pollutants from stormwater using numerous devices scattered through the catchment. In a radical shift from traditional approaches, we will identify primary contaminant sources in the catchment for later targeted education and regulation and a single remediation device will remove most toxic substances in stormwater currently discharged to estuaries. Stormwater reuse will provide a new valuable urban resource. This paradigm shift in traditional stormwater strategy will ensure biodiversity and ecologically sustainable development of urbanised ports. Port Jackson is used as a test case.Read moreRead less
The effect of dissolved organic matter on the toxicity and bioavailability of metals in tropical freshwater ecosystems. Mine waste materials in tropical Australia, including historical, current and future operations, represent one of the threats to the quality and biodiversity of tropical freshwater ecosystems. Dissolved organic carbon (DOC) is thought to influence metal toxicity. In order to adequately understand the risks of priority metals and metalloids from mining and other activities (eg. ....The effect of dissolved organic matter on the toxicity and bioavailability of metals in tropical freshwater ecosystems. Mine waste materials in tropical Australia, including historical, current and future operations, represent one of the threats to the quality and biodiversity of tropical freshwater ecosystems. Dissolved organic carbon (DOC) is thought to influence metal toxicity. In order to adequately understand the risks of priority metals and metalloids from mining and other activities (eg. urban development) to tropical freshwater ecosystems, it is essential that the role of DOC is quantified. The outcomes of this project will provide improved metal risk assessment methodologies; quantitative understanding of the relationship between DOC and the bioavailability and toxicity of key metals such arsenic, aluminium, cadmium, copper, uranium and zinc.Read moreRead less
A pilot study to demonstrate the use of 15N tracers for determining the flow of nitrogen through lower food webs. This project will have a significant impact on the way wetland wastewater treatment and reuse (WWTR) facilities are constructed in the future. Addressing the key biochemical issues to WWTR systems this study will facilitate improved construction design and management to optimise treatment performance. As National Priority One Area, sustainable water use and the efficiency of WWTR sys ....A pilot study to demonstrate the use of 15N tracers for determining the flow of nitrogen through lower food webs. This project will have a significant impact on the way wetland wastewater treatment and reuse (WWTR) facilities are constructed in the future. Addressing the key biochemical issues to WWTR systems this study will facilitate improved construction design and management to optimise treatment performance. As National Priority One Area, sustainable water use and the efficiency of WWTR systems is fundamental to our economic and social development. The results gleaned from this study will assist in the future design of WWTR systems that will be transferable outside the local study area and as such be of potential benefit both Nationally and internationally.Read moreRead less
Modelling contaminant dynamics in a well-mixed/stratified estuary. The proposed mixed/stratified estuarine model is unique and will predict effects of stormwater discharge on water quality, provide guidelines for loading from various contaminant sources, assess impact of marine construction activities, establish effects of natural and anthropogenic resuspension and determine spatial/temporal changes in contaminant distributions. Knowledge generated will assist making decisions locally and overse ....Modelling contaminant dynamics in a well-mixed/stratified estuary. The proposed mixed/stratified estuarine model is unique and will predict effects of stormwater discharge on water quality, provide guidelines for loading from various contaminant sources, assess impact of marine construction activities, establish effects of natural and anthropogenic resuspension and determine spatial/temporal changes in contaminant distributions. Knowledge generated will assist making decisions locally and overseas regarding the protection of valuable living resources, the future environmental status of estuarine systems under alternative management and remedial strategies, management contaminated sediments, new legislation for best management practise, and support for long-term policy development for this estuary type. Read moreRead less
Site factors and genotype-site interaction affecting growth of eucalypt hybrids bred for commercial agro-forestry as a salinity management tool. Preliminary results indicate that with appropriate site-genotype matching, commercial plantation forestry can be pushed well below the current limit (650-700mm/yr). Outcomes from this project will potentially facilitate doubling of Australia's forest plantations, eliminate the annual trade deficit of $2 billion in forest products; ensure the long term e ....Site factors and genotype-site interaction affecting growth of eucalypt hybrids bred for commercial agro-forestry as a salinity management tool. Preliminary results indicate that with appropriate site-genotype matching, commercial plantation forestry can be pushed well below the current limit (650-700mm/yr). Outcomes from this project will potentially facilitate doubling of Australia's forest plantations, eliminate the annual trade deficit of $2 billion in forest products; ensure the long term environmental and productive sustainability of our agricultural production systems; diversify and drought proof farm income through the introduction of perennial tree crops whose yield and harvest is independent of short term seasonal fluctuations; and re-invigorate the economy of rural Australia brought about by investment in new, inland forest and wood processing industries.Read moreRead less
Producing Biodiversity: A History of Science in Australia's Desert Lands. Biodiversity conservation is regarded by most people as desirable, but its historical and cultural aspects are poorly understood. It is not just about scientific understanding of animals and plants, but also a matter of practice and negotiation. People and places are changed through conservation and these changes in turn shape the ways nature is imagined and managed. Producing Biodiversity documents historical and contempo ....Producing Biodiversity: A History of Science in Australia's Desert Lands. Biodiversity conservation is regarded by most people as desirable, but its historical and cultural aspects are poorly understood. It is not just about scientific understanding of animals and plants, but also a matter of practice and negotiation. People and places are changed through conservation and these changes in turn shape the ways nature is imagined and managed. Producing Biodiversity documents historical and contemporary initiatives in biodiversity management on six very different pastoral properties on the margins of the Australian desert. We provide a long-term perspective on national and local conservation imperatives in different eras, and explore how they affect pastoral, Aboriginal and scientific communities.Read moreRead less
Sediment and seed bank dynamics in river systems of southeastern Australia: Implications for vegetation-based river rehabilitation. Every year in Australia millions of dollars are spent revegetating degraded riparian corridors as part of best practice river rehabilitation. The planting and maintenance of riparian tubestock is an expensive but essential component of current on-the-ground river management across the country. What if the success rate of riparian rehabilitation could be enhanced by ....Sediment and seed bank dynamics in river systems of southeastern Australia: Implications for vegetation-based river rehabilitation. Every year in Australia millions of dollars are spent revegetating degraded riparian corridors as part of best practice river rehabilitation. The planting and maintenance of riparian tubestock is an expensive but essential component of current on-the-ground river management across the country. What if the success rate of riparian rehabilitation could be enhanced by combining geomorphic and ecological knowledge to maximise the germination of native seeds stored in riparian seed banks? As the conservation of biodiversity becomes integral to environmental management, understanding riparian seed bank dynamics and seedling establishment within a geomorphic framework is an essential tool in river rehabilitation practice.Read moreRead less