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Unravelling the legacy of groundwater pollution to coastal waters. This project aims to resolve whether groundwater polluted decades ago is now seeping out along shorelines, and driving coastal water quality. The project will challenge common assumptions about the sources of chemical pollution to Australian coastal waters using a combination of cutting-edge analytical techniques, modelling, and laboratory investigations. The outcomes of the project will support the development of pollutant budge ....Unravelling the legacy of groundwater pollution to coastal waters. This project aims to resolve whether groundwater polluted decades ago is now seeping out along shorelines, and driving coastal water quality. The project will challenge common assumptions about the sources of chemical pollution to Australian coastal waters using a combination of cutting-edge analytical techniques, modelling, and laboratory investigations. The outcomes of the project will support the development of pollutant budgets and models required for the effective creation of water management solutions. As a result, the project will benefit the management of iconic waterways experiencing persistent, unresolved water quality issues which are costing the government billions of dollars.Read moreRead less
Unravelling the history of nitrogen cycling within the central Great Barrier Reef. This project aims to use coral skeleton geochemical analysis to establish if, when, and how nitrogen cycling changed along the central inshore region of the Great Barrier Reef (GBR) lagoon. Increasing anthropogenic nitrogen discharge to coastal waters could drive ecosystem decline in the GBR, one of Australia’s most sensitive and economically valuable natural environments. However, the full effect of anthropogenic ....Unravelling the history of nitrogen cycling within the central Great Barrier Reef. This project aims to use coral skeleton geochemical analysis to establish if, when, and how nitrogen cycling changed along the central inshore region of the Great Barrier Reef (GBR) lagoon. Increasing anthropogenic nitrogen discharge to coastal waters could drive ecosystem decline in the GBR, one of Australia’s most sensitive and economically valuable natural environments. However, the full effect of anthropogenic nitrogen is unclear due to a lack of long, continuous records. This project will unravel the history of nitrogen cycling in the GBR since the mid-1800s, knowledge crucial for managing this reef system.Read moreRead less
Iron sources and cycling in the Tasman Sea. Determining factors that influence the health and vitality of coastal and open-ocean regions is crucial to maintaining marine biodiversity and the Earth's climatic balance. This research project will determine the role iron plays in influencing phytoplankton growth, which ultimately regulates the drawdown of carbon dioxide by the oceans.
Discovery Early Career Researcher Award - Grant ID: DE150100500
Funder
Australian Research Council
Funding Amount
$321,000.00
Summary
Electron transfer at the microbe-mineral interface via cytochromes/exudates. This project aims to develop the kinetic (both in vivo and in vitro) and thermodynamic models of the extracellular electron transfer processes at the microbe-mineral interface via outer membrane cytochromes and exudates of dissimilatory iron-reducing bacteria, and elucidating the potential electron transfer process from iron-reducing bacteria to semiconducting iron minerals. The observed models will provide a more compr ....Electron transfer at the microbe-mineral interface via cytochromes/exudates. This project aims to develop the kinetic (both in vivo and in vitro) and thermodynamic models of the extracellular electron transfer processes at the microbe-mineral interface via outer membrane cytochromes and exudates of dissimilatory iron-reducing bacteria, and elucidating the potential electron transfer process from iron-reducing bacteria to semiconducting iron minerals. The observed models will provide a more comprehensive understanding of electron transfer reactions at the microbe-mineral interface, which will be helpful in the prediction of natural redox processes of iron transformation and in the development of bioremediation strategies for contaminated sites.Read moreRead less
Defining and controlling seawater intrusion in threatened coastal aquifers. This project aims to improve knowledge of coastal aquifer processes and management practices in order to increase the security of highly vulnerable freshwater. In particular, it aims to address critical barriers to the regional-scale investigation of coastal aquifers, including island lenses – the most vulnerable freshwater resources on earth. Threats to coastal aquifers are intensifying globally, and key knowledge gaps ....Defining and controlling seawater intrusion in threatened coastal aquifers. This project aims to improve knowledge of coastal aquifer processes and management practices in order to increase the security of highly vulnerable freshwater. In particular, it aims to address critical barriers to the regional-scale investigation of coastal aquifers, including island lenses – the most vulnerable freshwater resources on earth. Threats to coastal aquifers are intensifying globally, and key knowledge gaps prevail in our current understanding and representation of transient, regional-scale seawater intrusion. The project plans to use coastal aquifer case studies from Australia and overseas to evaluate seawater intrusion reversibility, intermittent pumping effects, offshore aquifer processes, and management approaches. The project may improve coastal aquifer practices globally by unravelling the driving forces of transient seawater intrusion and developing new seawater intrusion models.Read moreRead less
Resolving the geochemistry of coastal floodplain blackwaters. Deoxygenated dead zones are a rapidly growing global crisis in coastal areas. A major cause of dead zones in our estuaries is the formation and release of blackwaters from coastal wetlands. This project will provide the knowledge necessary to manage blackwaters in these wetlands and to greatly improve the health and sustainability of our estuaries.
Microbiology of a tropical creek impacted by sewage effluent: novel assessment using N-cycle functional markers and changes in community composition. Although most of Darwin Harbour has good water quality, there is much concern about local 'hot spots' where sewage has degraded ecosystem processes and values. As no bio-indicators of tropical marine water and sediment quality are known, the project will identify functional markers and microbial indicators of stress for integrated environmental mo ....Microbiology of a tropical creek impacted by sewage effluent: novel assessment using N-cycle functional markers and changes in community composition. Although most of Darwin Harbour has good water quality, there is much concern about local 'hot spots' where sewage has degraded ecosystem processes and values. As no bio-indicators of tropical marine water and sediment quality are known, the project will identify functional markers and microbial indicators of stress for integrated environmental monitoring.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE130100153
Funder
Australian Research Council
Funding Amount
$240,000.00
Summary
A liquid chromatography/gas bench: isotope ratio mass spectrometer for new and novel carbon and nitrogen research in coastal systems. This project will build a cutting-edge facility that will allow measurement of new and novel carbon and nitrogen stable isotopes. The facility will allow ground-breaking research to be undertaken in a variety of environmental fields such as coastal eutrophication, climate change, ocean acidification, coastal hydrology, and coral reefs.
Hydrogen: an overlooked intermediate during anoxia in permeable sediments. This project aims to quantify the respiratory pathways and the importance of hydrogen as an intermediate during anoxia in permeable (sand) sediments which dominate our coastline. It is anticipated the findings of this project will enable more accurate fundamental understanding of sediment diagenetic processes which control nutrient regeneration and loss pathways in the marine environment. This will enable better manageme ....Hydrogen: an overlooked intermediate during anoxia in permeable sediments. This project aims to quantify the respiratory pathways and the importance of hydrogen as an intermediate during anoxia in permeable (sand) sediments which dominate our coastline. It is anticipated the findings of this project will enable more accurate fundamental understanding of sediment diagenetic processes which control nutrient regeneration and loss pathways in the marine environment. This will enable better management of these environments in the face of increasing coastal population growth.Read moreRead less
Seagrass denitrification: importance for global nitrogen budgets. The objective of this project is to use cutting-edge techniques to measure denitrification rates in communities dominated by different tropical and temperate seagrass species. Denitrification is a globally significant critical ecosystem process, but it is poorly understood in seagrass communities. This project is significant because of the potential importance of seagrass communities for nitrogen loss via denitrification in coasta ....Seagrass denitrification: importance for global nitrogen budgets. The objective of this project is to use cutting-edge techniques to measure denitrification rates in communities dominated by different tropical and temperate seagrass species. Denitrification is a globally significant critical ecosystem process, but it is poorly understood in seagrass communities. This project is significant because of the potential importance of seagrass communities for nitrogen loss via denitrification in coastal systems and the importance of coastal systems in the global nitrogen budget. The expected outcomes of this study may significantly advance our understanding of the functioning of coastal systems and global nitrogen budgets.Read moreRead less