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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
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
Investigation of the metabolism, molecular targets and environmental fate of the seed germination stimulant, butenolide. The potent germination stimulant, known as butenolide, is expected to provide substantial benefits for improving seed germination and seedling vigour of many plant species used in agriculture, land restoration and rehabilitation. Currently, little is known about the stability, persistence and distribution of the butenolide in natural environments and the mechanism of seed dorm ....Investigation of the metabolism, molecular targets and environmental fate of the seed germination stimulant, butenolide. The potent germination stimulant, known as butenolide, is expected to provide substantial benefits for improving seed germination and seedling vigour of many plant species used in agriculture, land restoration and rehabilitation. Currently, little is known about the stability, persistence and distribution of the butenolide in natural environments and the mechanism of seed dormancy breaking. This study now provides a unique opportunity for Australian research to establish a world-leading position in understanding the processes that regulate seed dormancy, particularly in relation to post-mining land rehabilitation. The research findings will also have wider application in plant conservation, weed control and crop production.Read moreRead less
Rebuilding Sustainable and Functional Biodiversity following Coal Mining. Open-cut mines are a significant land-use in Australia and generate considerable GDP. Poor management prior to mining has caused much topsoil to be lost and microbes vital to sustainable nutrient cycling reduced to <10% that of a sustainable forest. To address this problem we are developing a rehabilitation model using Mount Owen open-cut coal mine which passes through a Upper Hunter forest. This project will discover ways ....Rebuilding Sustainable and Functional Biodiversity following Coal Mining. Open-cut mines are a significant land-use in Australia and generate considerable GDP. Poor management prior to mining has caused much topsoil to be lost and microbes vital to sustainable nutrient cycling reduced to <10% that of a sustainable forest. To address this problem we are developing a rehabilitation model using Mount Owen open-cut coal mine which passes through a Upper Hunter forest. This project will discover ways of utilizing microbe-derived nitrogen vital to a sustainable supply for native forests. Our aim is to reestablish these microbes in mine soils and determine their impact on forest community development.Read moreRead less
Rapid delineation of genetic provenance for rehabilitation and revegetation of native plant communities. The rehabilitation and/or revegetation of degraded, remnant or post-mining bushland is an increasingly important activity. Data and general principles for the delineation of genetic provenance are urgently required for effective rehabilitation, as well as for the conservation of genetic diversity. We will apply a new and powerful genetic technique for the rapid delineation of provenance in ....Rapid delineation of genetic provenance for rehabilitation and revegetation of native plant communities. The rehabilitation and/or revegetation of degraded, remnant or post-mining bushland is an increasingly important activity. Data and general principles for the delineation of genetic provenance are urgently required for effective rehabilitation, as well as for the conservation of genetic diversity. We will apply a new and powerful genetic technique for the rapid delineation of provenance in over 30 native plant species in south west Australia. Our aim is to generate provenance guidelines and principles, as well as provenance data for the most important species for bushland rehabilitation, which will be produced for rehabilitation practitioners through a "provenance atlas" book.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
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
Development of cryopreservation for high value provenance collections of recalcitrant plant species used in post-mining restoration. This project will develop new and innovative ways to store highly valued native plant germplasm at ultra cold temperatures (-196 °C, in liquid nitrogen) as a means to ensure that elite genotypes used in minesite restoration and critically endangered species are not lost forever to extinction. This project will be the first of its type in Australia utilising a multi ....Development of cryopreservation for high value provenance collections of recalcitrant plant species used in post-mining restoration. This project will develop new and innovative ways to store highly valued native plant germplasm at ultra cold temperatures (-196 °C, in liquid nitrogen) as a means to ensure that elite genotypes used in minesite restoration and critically endangered species are not lost forever to extinction. This project will be the first of its type in Australia utilising a multidisciplinary approach to answer key storage questions and will provide significant national benefits to conservation programs and landcare groups, providing these with additional resources to ensure the long-term survival of native plant germplasm collections. Read moreRead less