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
Optimal management of coastal ecosystems for blue carbon sequestration. Optimal management of coastal ecosystems for blue carbon sequestration. This project aims to develop decision tools to predict how different management plans could affect the persistence of coastal ecosystems and their capacity to sequester carbon. Coastal ‘blue carbon’ ecosystems (seagrasses, saltmarshes, mangroves) are among Earth’s most efficient carbon sinks, but coastal development and climate change threaten their capa ....Optimal management of coastal ecosystems for blue carbon sequestration. Optimal management of coastal ecosystems for blue carbon sequestration. This project aims to develop decision tools to predict how different management plans could affect the persistence of coastal ecosystems and their capacity to sequester carbon. Coastal ‘blue carbon’ ecosystems (seagrasses, saltmarshes, mangroves) are among Earth’s most efficient carbon sinks, but coastal development and climate change threaten their capacity to sequester carbon. Resource managers urgently need guidance to manage coasts to minimise carbon losses and maximise gains. This project is expected to develop knowledge of how to manage blue carbon ecosystems to achieve maximum carbon sequestration capacity, and to put Australia at the forefront of international efforts to incorporate coastal carbon within carbon dioxide mitigation strategies.Read moreRead less
Influence of Marine Protected Areas on ecosystem resilience and ecological processes. Australia is implementing a national representative system of marine protected areas (MPAs). The aims of the MPAs include ensuring ecological viability, maintaining ecological processes, and protecting biodiversity. The ability of MPAs to achieve these aims, however, is based largely on theory rather than empirical evidence. Implementation of MPAs is often controversial as it may cause economic hardship to comm ....Influence of Marine Protected Areas on ecosystem resilience and ecological processes. Australia is implementing a national representative system of marine protected areas (MPAs). The aims of the MPAs include ensuring ecological viability, maintaining ecological processes, and protecting biodiversity. The ability of MPAs to achieve these aims, however, is based largely on theory rather than empirical evidence. Implementation of MPAs is often controversial as it may cause economic hardship to communities dependent on fishing. Our project will benefit environmental managers by determining if and how MPAs influence biodiversity, ecological processes, and ecosystem services and resilience. It will benefit the wider community by providing the rigorous scientific evidence in favour of MPAs that is demanded by stakeholders.Read moreRead less
Universal properties and application of species size distributions. This project aims to identify general properties of body size distributions for thousands of aquatic species by bringing together datasets enabled by global observation and citizen science programs, novel statistical methods and latest theoretical advances. By addressing temperature effects on body sizes, the project expects to generate new knowledge about species status globally, under the combined impacts of climate change and ....Universal properties and application of species size distributions. This project aims to identify general properties of body size distributions for thousands of aquatic species by bringing together datasets enabled by global observation and citizen science programs, novel statistical methods and latest theoretical advances. By addressing temperature effects on body sizes, the project expects to generate new knowledge about species status globally, under the combined impacts of climate change and harvesting. Expected outcomes include new tools to integrate limited body size data into a consistent framework for significance advancement of models used in research and management. This should increase the capacity to assess human impacts on natural ecosystems and predict global warming driven changes.Read moreRead less
Anthropogenic influences on the source, transformation and fate of carbon and nitrogen in coastal waters: a case study of the Derwent Estuary. Ninety five percent of Australia's population live in the coastal zone on the shores of our major bays and estuaries. These water bodies are valuable resources for recreation, boating, fishing, marine transport and industry, but some activities, particularly the release of nitrogen, impose an environmental and economic cost. This project will significant ....Anthropogenic influences on the source, transformation and fate of carbon and nitrogen in coastal waters: a case study of the Derwent Estuary. Ninety five percent of Australia's population live in the coastal zone on the shores of our major bays and estuaries. These water bodies are valuable resources for recreation, boating, fishing, marine transport and industry, but some activities, particularly the release of nitrogen, impose an environmental and economic cost. This project will significantly advance our understanding of the natural processes that control the transformation and fate of nitrogen in coastal waters. As such the outcomes of this study will provide key information for managers on the environmental outcomes of nutrient management strategies.Read moreRead less
Understanding and predicting sediment distribution and net transport in estuaries and coastal oceans with an emphasis on muddy bottom layers. This project will design and implement a field campaign to observe fluid mud layers in the muddy harbours and develop predictive models to investigate these layers. This research will give new direction to port management by developing adaptive tools to solve water quality and siltation problems in muddy ports and harbours in Australia.
Discovery Early Career Researcher Award - Grant ID: DE160101207
Funder
Australian Research Council
Funding Amount
$334,000.00
Summary
Predicting fisheries change from cumulative impacts to aquatic habitats. This project intends to quantify the role that aquatic habitats play in fisheries, and to help identify where to restore degraded aquatic habitats. Fisheries are a globally important resource but their status is declining in many regions, often because of the loss of aquatic habitats. However, the role of habitat in fishery declines is poorly quantified, and new models are needed that integrate existing datasets to attribut ....Predicting fisheries change from cumulative impacts to aquatic habitats. This project intends to quantify the role that aquatic habitats play in fisheries, and to help identify where to restore degraded aquatic habitats. Fisheries are a globally important resource but their status is declining in many regions, often because of the loss of aquatic habitats. However, the role of habitat in fishery declines is poorly quantified, and new models are needed that integrate existing datasets to attribute change in a fishery to change in its habitats. The project aims to develop a new statistical analysis to examine the role of habitat loss in the global status of fisheries and how multiple human impacts to habitats affect fisheries, to decide how we can best protect aquatic habitats.Read moreRead less
Fish Jenga: metapopulation management for coastal river fish. This project aims to address the escalating threats to coastal freshwater fish from drought, fire, and other disturbances. The project expects to generate new knowledge on contemporary distributions of NSW coastal freshwater fishes, and will develop models of population dynamics to explore the consequences of alternative water management and disturbance scenarios. The expected outcome of the project is to revolutionise management by r ....Fish Jenga: metapopulation management for coastal river fish. This project aims to address the escalating threats to coastal freshwater fish from drought, fire, and other disturbances. The project expects to generate new knowledge on contemporary distributions of NSW coastal freshwater fishes, and will develop models of population dynamics to explore the consequences of alternative water management and disturbance scenarios. The expected outcome of the project is to revolutionise management by replacing the current practice of managing river basins separately, with a framework that accounts for among-basin linkages that are essential for the long-term persistence of fish populations. Significant benefits include more efficient use of water resources and improved conservation outcomes for native fish.Read moreRead less
Impacts of changing detrital source biodiversity on estuarine ecosystems. Coastal development, invasive pests, and climate change are impacting abundances of estuarine aquatic plants. This in turn is affecting the composition and magnitude of detrital enrichment, threatening biodiversity, fisheries production and endangered birds. Our pioneering research will forecast the impacts of changing detrital-source biodiversity on soft-sediment communities and the food webs they support in Australia and ....Impacts of changing detrital source biodiversity on estuarine ecosystems. Coastal development, invasive pests, and climate change are impacting abundances of estuarine aquatic plants. This in turn is affecting the composition and magnitude of detrital enrichment, threatening biodiversity, fisheries production and endangered birds. Our pioneering research will forecast the impacts of changing detrital-source biodiversity on soft-sediment communities and the food webs they support in Australia and the USA. Ecological generalities obtained can be used to support policy development that ensures sustainable management of estuaries. This work will also facilitate training of early career researchers and focus research efforts of leading US researchers towards issues crucial for Australian estuarine management.Read moreRead less
Reconciling competing objectives for the design of marine reserve networks: biodiversity, food security, and local equity in benefits. This project uses a decision-theoretic framework to balance the often conflicting marine conservation objectives of preserving biodiversity and building food security for local communities in the socially and ecologically complex region of the Coral Triangle. A new reserve design will boost biodiversity conservation and better support livelihoods.