Trace element geochemistry of microbialites: towards an independent record of biogenicity, microbial communities, and seawater chemistry. A vast amount of Australia's mineral wealth is held in rocks of Precambrian age, yet those rocks are notoriously difficult to date and correlate owing to the rarity of fossils. Successful discrimination of different microbialites using biochemically sensitive trace elements will provide a firm basis and rationale for stromatolite biostratigraphy and greatly in ....Trace element geochemistry of microbialites: towards an independent record of biogenicity, microbial communities, and seawater chemistry. A vast amount of Australia's mineral wealth is held in rocks of Precambrian age, yet those rocks are notoriously difficult to date and correlate owing to the rarity of fossils. Successful discrimination of different microbialites using biochemically sensitive trace elements will provide a firm basis and rationale for stromatolite biostratigraphy and greatly increase our ability to understand the geological evolution and distribution of Precambrian rocks and resources. Additionally, a better understanding of the information content of stromatolites will yield considerable insight into the origin of life on Earth and its relationship to Earth's evolving chemistry and environment. Read moreRead less
THE CORAL RECORD OF ENVIRONMENTAL IMPACTS IN THE GREAT BARRIER REEF:QUANTIFICATION OF ANTHROPOGENIC FLUXES. The objective of this proposal is to quantify the environmental impacts of enhanced terrestrial fluxes and climate change on the coral reefs in the Great Barrier Reef. This will be achieved by using an integrated approach based on coral proxy records of river plumes and sea surface temperatures that are preserved in carbonate skeletons of the long-lived (200-400 year old) Porites coral. ....THE CORAL RECORD OF ENVIRONMENTAL IMPACTS IN THE GREAT BARRIER REEF:QUANTIFICATION OF ANTHROPOGENIC FLUXES. The objective of this proposal is to quantify the environmental impacts of enhanced terrestrial fluxes and climate change on the coral reefs in the Great Barrier Reef. This will be achieved by using an integrated approach based on coral proxy records of river plumes and sea surface temperatures that are preserved in carbonate skeletons of the long-lived (200-400 year old) Porites coral. This will be integrated with monitoring and process studies of river flood plumes and coral reefs and provide a scientific basis to ensure the long-term sustainability of the GBR.Read moreRead less
Environmental change, carbon cycling and human impact in tropical Australia. This fellowhip will provide the fundamental science outputs required to understand the complex linkages between terrestrial ecosystems, environmental change and human impact in the tropics - in Australia and globally - thereby assisting in
(i) predicting the response of tropical ecosystems to future environmental change and respond to the impacts of tropical climate variability
(ii) developing and validating method ....Environmental change, carbon cycling and human impact in tropical Australia. This fellowhip will provide the fundamental science outputs required to understand the complex linkages between terrestrial ecosystems, environmental change and human impact in the tropics - in Australia and globally - thereby assisting in
(i) predicting the response of tropical ecosystems to future environmental change and respond to the impacts of tropical climate variability
(ii) developing and validating methodologies for improved carbon sequestration, verifiable carbon accounting and emissions trading
(iii) achieving sustainability in the utilization of the natural resource base of tropical Australia by optimizing the balance between wealth creation and environmental impact
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Development of Innovative Landform and Closure Designs for Potentially Contaminating Surface Waste Rock Dumps. In Australia, the conventional rehabilitation of mine sites is predicated on the perceived expectation of sparse grazing post-mining. This typically involves flattening the mined landform, topsoiling the surface, and planting pasture grasses, and in some cases has become enshrined in legislation. In Australia's dry climate, grazing is often not a sustainable land use. The aims of the ....Development of Innovative Landform and Closure Designs for Potentially Contaminating Surface Waste Rock Dumps. In Australia, the conventional rehabilitation of mine sites is predicated on the perceived expectation of sparse grazing post-mining. This typically involves flattening the mined landform, topsoiling the surface, and planting pasture grasses, and in some cases has become enshrined in legislation. In Australia's dry climate, grazing is often not a sustainable land use. The aims of the project are to prove that alternative landform design and surface treatment strategies for potentially contaminating surface waste rock dumps are more effective and sustainable than the conventional approach, and through reduced earthworks and the use of waste materials will achieve substantial cost savings.Read moreRead less
Polymetallic phytoextraction applied to mine waste. Phytoextraction involves the use of hyperaccumulator plants to grow and concentrate a metal. Subsequently, the crop is harvested and the metal extracted. The aim of this research is to investigate the uptake and chemically induced uptake of heavy metals (Ni, Co, Au, Ag, Cu, Pb, Zn, Pt, Pd, Cr) by plants grown on mine tailings and mine waste materials. Outcomes will include practical methods of metal extraction that are cheap to employ where met ....Polymetallic phytoextraction applied to mine waste. Phytoextraction involves the use of hyperaccumulator plants to grow and concentrate a metal. Subsequently, the crop is harvested and the metal extracted. The aim of this research is to investigate the uptake and chemically induced uptake of heavy metals (Ni, Co, Au, Ag, Cu, Pb, Zn, Pt, Pd, Cr) by plants grown on mine tailings and mine waste materials. Outcomes will include practical methods of metal extraction that are cheap to employ where metal concentrations are subeconomic and of potential environmental impact during mining and after mine closure.Read moreRead less
The importance of sediment denitrification in the nitrogen budget of the inshore wet tropics section of the Great Barrier Reef Lagoon. The Great Barrier Reef (GBR) is a World Heritage Area that has significant ecological, economical and social values for the Australian (world) community. Nutrient over-enrichment (eutrophication) associated with runoff from adjacent catchments is a major threat to the GBR. This study will quantify what proportion of the terrestrial nitrogen load delivered to the ....The importance of sediment denitrification in the nitrogen budget of the inshore wet tropics section of the Great Barrier Reef Lagoon. The Great Barrier Reef (GBR) is a World Heritage Area that has significant ecological, economical and social values for the Australian (world) community. Nutrient over-enrichment (eutrophication) associated with runoff from adjacent catchments is a major threat to the GBR. This study will quantify what proportion of the terrestrial nitrogen load delivered to the inshore wet tropics section of the Great Barrier Reef Lagoon is removed through sediment denitrification. Critical information for understanding the process of eutrophication in the GBR Lagoon that will be used by our Industry Partner in the management, rehabilitation and protection of the GBR.Read moreRead less