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Improved quality and interpretation of terrestrial fauna surveys for environmental impact assessments in the mining industry. This study will improve the quality and interpretation of the terrestrial fauna surveys used as a basis for Environmental Impact Assessment in the mining industry. As a consequence, the Environment Protection Authority will better understand the potential impacts of mining on biodiversity and ecosystems, and can place more appropriate conditions on mining companies and th ....Improved quality and interpretation of terrestrial fauna surveys for environmental impact assessments in the mining industry. This study will improve the quality and interpretation of the terrestrial fauna surveys used as a basis for Environmental Impact Assessment in the mining industry. As a consequence, the Environment Protection Authority will better understand the potential impacts of mining on biodiversity and ecosystems, and can place more appropriate conditions on mining companies and their rehabilitation programs. In addition, the study will report on strategies for detecting rare and endangered species, and the development of appropriate databases to enable terrestrial fauna data to be interpreted in the context of soils and vegetation at habitat, landscape and regional scales.Read moreRead less
Developing and testing a novel biological reduction cell to remediate heavy metal and acid-containing industrial and mine leachates. Echo Remediation Ltd. has a new reduction cell that uses sulfur and bacteria to remove heavy metals and acidity from mine leachates, but development is now required to make it viable. The project aims to optimise the process using molecular approaches to study the effects of operating conditions on the bacterial communities. As part of the investigation, active iro ....Developing and testing a novel biological reduction cell to remediate heavy metal and acid-containing industrial and mine leachates. Echo Remediation Ltd. has a new reduction cell that uses sulfur and bacteria to remove heavy metals and acidity from mine leachates, but development is now required to make it viable. The project aims to optimise the process using molecular approaches to study the effects of operating conditions on the bacterial communities. As part of the investigation, active iron reducers will be selected and introduced to the cell (in conjunction with chemical amendments) and their colonization monitored. The new technology once developed has the potential to be used at mine sites in Australia and overseas and its employment offers a sustainable, biological "green" approach to mine waste remediation.Read moreRead less
Rehabilitation strategies for metalliferous mine wastes using native metallophytes from Pb-Zn-Ag gossans, northwest Queensland. The global area covered with mine waste is in the order of 100 million hectares containing several 100,000 million tonnes of mine wastes. The long-term sustainable rehabilitation of metal mine sites is inhibited by our lack of knowledge of metal resistance and uptake by Australian native plants. This project will evaluate metallophytes naturally growing on metal-rich so ....Rehabilitation strategies for metalliferous mine wastes using native metallophytes from Pb-Zn-Ag gossans, northwest Queensland. The global area covered with mine waste is in the order of 100 million hectares containing several 100,000 million tonnes of mine wastes. The long-term sustainable rehabilitation of metal mine sites is inhibited by our lack of knowledge of metal resistance and uptake by Australian native plants. This project will evaluate metallophytes naturally growing on metal-rich soils, northwest Queensland, for their capabilities and revegetation potential when grown in mine wastes of the Cannington Ag-Pb-Zn mine. Outcomes will include practical, innovative methods of mine site rehabilitation that are low-cost and environmentally-friendly.Read moreRead less
Ecosystem restoration of bauxite-processing residue sand disposal areas in Western Australia: Important biogeochemical processes and effective fertilisation strategies. Alumina production is one of Australia's most important mining activities. Residue from bauxite-processing must be managed appropriately to minimise detrimental impacts on the surrounding environment. The location of Alcoa's WA Refineries in environmentally- and community- sensitive areas necessitates a detailed understanding of ....Ecosystem restoration of bauxite-processing residue sand disposal areas in Western Australia: Important biogeochemical processes and effective fertilisation strategies. Alumina production is one of Australia's most important mining activities. Residue from bauxite-processing must be managed appropriately to minimise detrimental impacts on the surrounding environment. The location of Alcoa's WA Refineries in environmentally- and community- sensitive areas necessitates a detailed understanding of residue disposal area (RDA) management. Currently little is known about the biogeochemical cycling of nitrogen, phosphorus and carbon in the residue sand despite its importance for sustainable rehabilitation practice. Findings from this project are critical for developing improved fertilisation strategies and protocols for ecosystem restoration of RDAs, which will be applicable both in Australia and overseas. Read moreRead less
Novel strategy for optimising fertilizer input coupled with organic residue management for sustainable reconstruction of jarrah forest ecosystem. This project is aimed at judicious management of the rehabilitation process following surface mining by reducing initial fertilizer input along with using organic residue accumulated following pre-mine clearing of vegetation. This approach has the potential for 'speeding-up' the ecosystem development process by initiating early microbial development in ....Novel strategy for optimising fertilizer input coupled with organic residue management for sustainable reconstruction of jarrah forest ecosystem. This project is aimed at judicious management of the rehabilitation process following surface mining by reducing initial fertilizer input along with using organic residue accumulated following pre-mine clearing of vegetation. This approach has the potential for 'speeding-up' the ecosystem development process by initiating early microbial development in rehabilitation practice and reducing the deleterious effect of heavy fertilization. Apart from these ecological advantages, reducing fertilizer application lowers minesite rehabilitation cost incurred by mining companies. This project will be the first attempt to use organic residue and streamlining the use of mineral fertilizers in mine rehabilitation practice.Read moreRead less
How does soil fertility affect jarrah forest rehabilitation after mining? This project will examine the effect of fertiliser additions on the species composition and functional diversity of jarrah forest that develops after bauxite-mining. It is directly relevant to the achievement of the sustainable use of natural resources in Australia. Expected outcomes are best-practice management guidelines regarding the amount of fertiliser that results in the most effective achievement of completion cri ....How does soil fertility affect jarrah forest rehabilitation after mining? This project will examine the effect of fertiliser additions on the species composition and functional diversity of jarrah forest that develops after bauxite-mining. It is directly relevant to the achievement of the sustainable use of natural resources in Australia. Expected outcomes are best-practice management guidelines regarding the amount of fertiliser that results in the most effective achievement of completion criteria, and also an improved understanding of the consequences of fertiliser application on the biodiversity (plants and soil biota) and ecosystem function of rehabilitated forest ecosystems. Read moreRead less
Quantifying the re-establishment of soil processes and the impact of fire management on rehabilitated bauxite mines in Western Australia. A major objective in the rehabilitation of bauxite mines in the jarrah forest of Western Australia is to return a self-sustaining ecosystem. Nutrient cycling and microbial diversity are key components of the functioning of the rehabilitated system; but little is know about the resilience of these processes in jarrah forests. We aim to quantify the dynamic rela ....Quantifying the re-establishment of soil processes and the impact of fire management on rehabilitated bauxite mines in Western Australia. A major objective in the rehabilitation of bauxite mines in the jarrah forest of Western Australia is to return a self-sustaining ecosystem. Nutrient cycling and microbial diversity are key components of the functioning of the rehabilitated system; but little is know about the resilience of these processes in jarrah forests. We aim to quantify the dynamic relationships between soil organic matter cycling, microbial diversity and function in relation to seasonality, rehabilitation age and fire. This is of specific relevance to restoring biodiversity within rehabilitated Jarrah forests and establishing a time frame for their return to state government management.Read moreRead less
Synthesis and evaluation of labelled germination stimulants for determining the role of butenolide in promoting seed germination. The discovery of the germination promotive agent in smoke (a butenolide) represents a major and internationally significant scientific discovery for Australia and provides exciting opportunities for benefits in agriculture, natural lands management and restoration sciences. The activity demonstrated with a broad range of species shows that the butenolide has general a ....Synthesis and evaluation of labelled germination stimulants for determining the role of butenolide in promoting seed germination. The discovery of the germination promotive agent in smoke (a butenolide) represents a major and internationally significant scientific discovery for Australia and provides exciting opportunities for benefits in agriculture, natural lands management and restoration sciences. The activity demonstrated with a broad range of species shows that the butenolide has general applicability worldwide. This study now provides a unique opportunity for Australian research to establish a world-leading position in understanding the butenolide mode of action within plant seeds which will result in a significant advance in our understanding of the processes that regulate seed dormancy in many plant species. Read moreRead less
Are acidic mine lakes usable as regional water resources? After the de-commissioning of open-cut mines, the voids frequently fill with water. In Australia, hundreds of mine lakes will develop over the next ten years and beyond. When the base mineralogy is pyritic the water can become highly acidic with high concentrations of dissolved metals. These mine lakes frequently exist in regions where water resources are in short supply. This project will investigate possible strategies to remediate such ....Are acidic mine lakes usable as regional water resources? After the de-commissioning of open-cut mines, the voids frequently fill with water. In Australia, hundreds of mine lakes will develop over the next ten years and beyond. When the base mineralogy is pyritic the water can become highly acidic with high concentrations of dissolved metals. These mine lakes frequently exist in regions where water resources are in short supply. This project will investigate possible strategies to remediate such lakes and assess the possibility of using mining lakes as valued water resources in these regions. The primary outcome of the research will be improved management of the lakes for optimal long term water quality.Read moreRead less
Managing acid mine drainage in northern Australia using microbial mats. One of the most difficult environmental issues for the mining industry is acid mine drainage (AMD) that can lead to significant environmental damage. This project aims to identify microbes and characterise their roles in AMD formation in north Australia. We will use our new knowledge to design and trial microbial mats for the treatment of AMD. A successful AMD microbial treatment technology will minimise the risk of acid run ....Managing acid mine drainage in northern Australia using microbial mats. One of the most difficult environmental issues for the mining industry is acid mine drainage (AMD) that can lead to significant environmental damage. This project aims to identify microbes and characterise their roles in AMD formation in north Australia. We will use our new knowledge to design and trial microbial mats for the treatment of AMD. A successful AMD microbial treatment technology will minimise the risk of acid runoff and metal seepage into rivers and through groundwater. AMD treatment technology we develop in the tropics where we experience the extremes of dry and wet seasons will require only minor modification to operate in temperate climates however the reverse is not true. Read moreRead less