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The Prediction and Analysis of Complex Morphology in Coastal Environments. Coastal features, incorporating river, tide and wave induced flows and associated sediment transport, represent highly complex systems. At present it is impossible to analyse anything but the simplest forms, yet it is often necessary to determine their overall properties and behaviour in engineering analysis and design. The aim of the project is to develop and verify a modelling approach using the concept of entropy and a ....The Prediction and Analysis of Complex Morphology in Coastal Environments. Coastal features, incorporating river, tide and wave induced flows and associated sediment transport, represent highly complex systems. At present it is impossible to analyse anything but the simplest forms, yet it is often necessary to determine their overall properties and behaviour in engineering analysis and design. The aim of the project is to develop and verify a modelling approach using the concept of entropy and an efficient optimisation algorithm to allow key properties of complex coastal systems to be determined. The proposal represents an innovative approach to the coastal modelling problem that would overcome significant limitations of current morphological models.Read moreRead less
Bioinvasions: the interactive effects of propagule pressure and pollution. The successful establishment of species outside their native range is an increasingly frequent occurrence and can cause reductions in biodiversity and ecosystem disruption. Bioinvasions may also cause public health risks and damage to agriculture and fisheries. Nowhere is the accelerating pace of bioinvasions more dramatic than in ports and harbours. This project will determine the effects of pollution on invasion in a ma ....Bioinvasions: the interactive effects of propagule pressure and pollution. The successful establishment of species outside their native range is an increasingly frequent occurrence and can cause reductions in biodiversity and ecosystem disruption. Bioinvasions may also cause public health risks and damage to agriculture and fisheries. Nowhere is the accelerating pace of bioinvasions more dramatic than in ports and harbours. This project will determine the effects of pollution on invasion in a marine system. This project is in the national interest because it will identify mechanisms through which the invasion of exotic species are encouraged and assist in the identification and prioritisation of effective management strategies to prevent invasion.Read moreRead less
Do pollution events facilitate biotic invasion in marine systems? This project aims to determine whether pollution affects the biological resistance of assemblages to invasion. The discharge of toxicants into coastal waters is an increasingly important source of disturbance that has the potential to make marine assemblages more susceptible to biotic invasion. The project will determine if pollution events facilitate the colonisation, persistence and spread of non-native species and how initial a ....Do pollution events facilitate biotic invasion in marine systems? This project aims to determine whether pollution affects the biological resistance of assemblages to invasion. The discharge of toxicants into coastal waters is an increasingly important source of disturbance that has the potential to make marine assemblages more susceptible to biotic invasion. The project will determine if pollution events facilitate the colonisation, persistence and spread of non-native species and how initial assemblage diversity modifies this response. The generality of several important ecological hypotheses developed in plant communities are tested in marine systems for the first time and extended to include the role of toxic disturbances.Read moreRead less
Does the timing and frequency of transient pollution events affect sessile marine invertebrates? Disturbances play a fundamental role in many coastal ecosystems, and understanding how they act is central to managing coastal areas. Humans are a major source of disturbances, especially through the controlled and accidental input of toxicants. Managing these inputs requires an understanding of how the timing and frequency of pollution events affect the animals exposed to these substances. I will ....Does the timing and frequency of transient pollution events affect sessile marine invertebrates? Disturbances play a fundamental role in many coastal ecosystems, and understanding how they act is central to managing coastal areas. Humans are a major source of disturbances, especially through the controlled and accidental input of toxicants. Managing these inputs requires an understanding of how the timing and frequency of pollution events affect the animals exposed to these substances. I will use a new field dosing system to determine these relationships, using copper, a common pollutant, as a model. The results will provide a broader understanding of the role of disturbance and produce a predictive model applicable to other pollutants.Read moreRead less
Identifying and creating essential habitat for rare Australian intertidal molluscs. Coastal development in Australia causes major changes to natural habitats. Obligations to conserve biodiversity are impossible without reliable information about how animals respond to habitat and how best to restore damaged habitat. Current management treats habitats as large-scale units and ignores fine-scale use of habitat by animals. This project will provide essential understanding to guide policy about coas ....Identifying and creating essential habitat for rare Australian intertidal molluscs. Coastal development in Australia causes major changes to natural habitats. Obligations to conserve biodiversity are impossible without reliable information about how animals respond to habitat and how best to restore damaged habitat. Current management treats habitats as large-scale units and ignores fine-scale use of habitat by animals. This project will provide essential understanding to guide policy about coastal conservation, by providing ecologically realistic understanding of associations between rare invertebrates and habitat. New protocols to measure these associations and success of restoration, will be applicable to any rare species in any complex habitat, increasing present capabilities for conservation.Read moreRead less
A biogeochemical study of a coastal lagoon - tests of a mechanistic model. The water quality and seagrass biomass of intermittently closed-open lagoons (ICOLs), which dominate the NSW coast, are declining in response to development and their low flushing rates. A combination of field sampling, biogeochemical analysis and ecological modelling will be used to improve our quantitative understanding and prediction of ecological processes in small estuaries. A novel, mechanistic model of nutrients- ....A biogeochemical study of a coastal lagoon - tests of a mechanistic model. The water quality and seagrass biomass of intermittently closed-open lagoons (ICOLs), which dominate the NSW coast, are declining in response to development and their low flushing rates. A combination of field sampling, biogeochemical analysis and ecological modelling will be used to improve our quantitative understanding and prediction of ecological processes in small estuaries. A novel, mechanistic model of nutrients-phytoplankton-seagrass-zooplankton will be improved with detailed sampling of Smiths Lake on the central NSW coast. Simulations indicative of future development, fish re-stocking or management options will indicate the cost-benefit on estuarine ecosystems.Read moreRead less
The stability of shallow coastal sediments with and without seagrasses. One of the key factors influencing the success of seagrass transplantation work appears to be the stability of the surrounding sediment, and therefore an understanding of the dynamism of the sediments is crucial to further progress in this field. This project will examine the dynamics of sediments around seagrass meadows across a range of wave energies. A series of automated sediment height loggers will be deployed in seagra ....The stability of shallow coastal sediments with and without seagrasses. One of the key factors influencing the success of seagrass transplantation work appears to be the stability of the surrounding sediment, and therefore an understanding of the dynamism of the sediments is crucial to further progress in this field. This project will examine the dynamics of sediments around seagrass meadows across a range of wave energies. A series of automated sediment height loggers will be deployed in seagrass meadows, as well as locations where seagrass meadows have been lost. Detailed studies of the sediments and environmental conditions will be undertaken at the same time, permitting comparisons between different locations.Read moreRead less
Do artificial structures enhance the spread of exotic marine invertebrates in NSW estuaries? This project will investigate whether artificial structures in estuaries enhance the spread of exotic marine invertebrates and will examine the impacts of exotic species on rocky reef species. The introduction of exotic species is a significant threat to native biodiversity, second only to habitat destruction. These two threats are coincident in urbanised estuaries. This project will also provide infor ....Do artificial structures enhance the spread of exotic marine invertebrates in NSW estuaries? This project will investigate whether artificial structures in estuaries enhance the spread of exotic marine invertebrates and will examine the impacts of exotic species on rocky reef species. The introduction of exotic species is a significant threat to native biodiversity, second only to habitat destruction. These two threats are coincident in urbanised estuaries. This project will also provide information about the possible roles of different types of boating activity in transporting exotic species. Research on the role of artificial structures in invasions has not been done anywhere in the world and is essential if we are to understand, manage and ameliorate the threats of exotic species.Read moreRead less
Unraveling the nitrogen cycle in a periodically anoxic estuary. Climate change is likely to lead to reduced river inflows to estuaries which can lead to oxygen depletion and major changes in nutrient cycling. This project will help inform the public and policy makers about the role of environmental flows in maintaining estuarine function, and thus guide future decisions on environmental flow requirements in the Yarra River Estuary. The benefits of this understanding will also flow on to improv ....Unraveling the nitrogen cycle in a periodically anoxic estuary. Climate change is likely to lead to reduced river inflows to estuaries which can lead to oxygen depletion and major changes in nutrient cycling. This project will help inform the public and policy makers about the role of environmental flows in maintaining estuarine function, and thus guide future decisions on environmental flow requirements in the Yarra River Estuary. The benefits of this understanding will also flow on to improved understanding and management of nitrogen loads to Port Phillip Bay. This project will form a close collaborative partnership between Monash University, Melbourne Water and the EPA. This collaboration will ensure the integration of cutting edge science with innovative management regimes Read moreRead less
Investigation of chemical clogging in a permeable reactive barrier (PRB) installed for remediating groundwater from acid sulphate soils. Soil acidity is a major geo-environmental problem in coastal Australia, whereby acidified groundwater pollutes estuaries with catastrophic consequences on local aquaculture (e.g. fish, oyster and prawn farming) and agricultural industries. The project aims to optimise the design and performance of permeable reactive barriers (PRBs) utilising waste materials suc ....Investigation of chemical clogging in a permeable reactive barrier (PRB) installed for remediating groundwater from acid sulphate soils. Soil acidity is a major geo-environmental problem in coastal Australia, whereby acidified groundwater pollutes estuaries with catastrophic consequences on local aquaculture (e.g. fish, oyster and prawn farming) and agricultural industries. The project aims to optimise the design and performance of permeable reactive barriers (PRBs) utilising waste materials such as recycled concrete and oyster shells for neutralising groundwater acidity prior to discharge to waterways. The main research includes the study of potential clogging and fouling of these PRB materials due to chemical reactions and to develop a predictive tool for long-term PRB performance as a means of ground acidity alleviation.Read moreRead less