Sources of phosphorus promoting cyanobacteria in subtropical reservoirs. Water managers around Australia are currently considering various strategies to deal with water shortages. Many of these management actions have potential to impact water quality, through altering the nutrient balance within reservoirs and hence affecting nutrients available for cyanobacteria. Cyanobacteria blooms pose an increasing threat to water supplies, with economic, social and environmental costs of $150M pa in Aus ....Sources of phosphorus promoting cyanobacteria in subtropical reservoirs. Water managers around Australia are currently considering various strategies to deal with water shortages. Many of these management actions have potential to impact water quality, through altering the nutrient balance within reservoirs and hence affecting nutrients available for cyanobacteria. Cyanobacteria blooms pose an increasing threat to water supplies, with economic, social and environmental costs of $150M pa in Australia. The project will provide tools to water quality managers to assess how changes to subtropical reservoirs, such as water recycling, catchment land-use changes and increased drawdown are likely to affect nutrient budgets and cyanobacteria blooms.Read moreRead less
Groundwater dynamics at the ocean-aquifer interface: Implications for modelling of regional flow in Pioneer Valley Aquifers. The Pioneer Valley Water Resources Plan, part of the Council of Australian Government's Water Reform Process, includes the development of regional groundwater flow and saltwater intrusion models for assisting in the allocation and management of the groundwater resources. The ocean forms the largest active boundary of the Pioneer groundwater system, where complex, dynamic h ....Groundwater dynamics at the ocean-aquifer interface: Implications for modelling of regional flow in Pioneer Valley Aquifers. The Pioneer Valley Water Resources Plan, part of the Council of Australian Government's Water Reform Process, includes the development of regional groundwater flow and saltwater intrusion models for assisting in the allocation and management of the groundwater resources. The ocean forms the largest active boundary of the Pioneer groundwater system, where complex, dynamic hydraulic conditions exist due to oceanic oscillations (tides and waves) and density effects. This project aims to investigate and quantify the effects of the dynamic seaward boundary condition on regional groundwater flow in Pioneer Valley aquifers. The research outcomes will also have important implications for other coastal aquifers.Read moreRead less
Identifying critical thresholds to prioritise lake restoration. This project aims to conduct a global assessment of lake water quality and prioritise lakes for restoration. This project expects to generate new understanding of trends in lake condition based on application of geospatial frameworks and models for nutrient loads and in-lake trophic state. This information will help to quantify the magnitude of actions required to restore lakes at landscape scale. The intended outcome is a global at ....Identifying critical thresholds to prioritise lake restoration. This project aims to conduct a global assessment of lake water quality and prioritise lakes for restoration. This project expects to generate new understanding of trends in lake condition based on application of geospatial frameworks and models for nutrient loads and in-lake trophic state. This information will help to quantify the magnitude of actions required to restore lakes at landscape scale. The intended outcome is a global atlas linking catchment hydrology, nutrient loads and lake attributes. Expected outcomes of this project include improved methods to predict effects of land use and climate change on lakes across the globe, and recommendations to water resource managers on investing in the restoration of lakes across the landscape.Read moreRead less
A Basic Study of Mixing and Dispersion in Riverine and Estuarine Systems in South-East Queensland. Dispersion of matter in natural river systems is of considerable importance, particularly in relation to the transport of nutrients, sediment and toxicants into ecosystems as a result of stormwater runoff and wastewater discharges. The project aims to improve our basic understanding of mixing and dispersion processes in tropical and subtropical rivers and estuaries, and to develop improved predicti ....A Basic Study of Mixing and Dispersion in Riverine and Estuarine Systems in South-East Queensland. Dispersion of matter in natural river systems is of considerable importance, particularly in relation to the transport of nutrients, sediment and toxicants into ecosystems as a result of stormwater runoff and wastewater discharges. The project aims to improve our basic understanding of mixing and dispersion processes in tropical and subtropical rivers and estuaries, and to develop improved predictive models to assist with the management of natural ecosystems. This will be achieved through a Ph.D. research project integrating basic water engineering and environmental sciences.Read moreRead less
A study of turbulence and influence of anthropogenic inputs in small subtropical estuaries. This project aims to improve our basic understanding of mixing and dispersion processes in small subtropical estuaries, and to develop improved predictive models to assist with the management of natural ecosystems. This will be the first comprehensive study of mixing processes and the influence of anthropogenic inputs in small subtropical estuaries.
Design Rationale for Gated Canal Estates. This project will provide new knowledge on how to design gated canal estates to maximise their water quality and avoid events leading to the development of poor, and even harmful, water quality. It will document this new knowledge as Engineering Design Guidelines, which can be implemented to minimise adverse water quality impacts. A User Manual will also be developed to document the application of water quality decision support systems for use in designi ....Design Rationale for Gated Canal Estates. This project will provide new knowledge on how to design gated canal estates to maximise their water quality and avoid events leading to the development of poor, and even harmful, water quality. It will document this new knowledge as Engineering Design Guidelines, which can be implemented to minimise adverse water quality impacts. A User Manual will also be developed to document the application of water quality decision support systems for use in designing canal estates. This project will foster technology transfer from the research environment to the private and public sectors, also enabling a student to complete a PhD program.Read moreRead less
Fluorinated surfactants and hydrocarbons at coastal airports. Fluorinated surfactants and hydrocarbons at coastal airports. This project aims to develop a model and parameters that describe transport and co-transport of fluoro-surfactants and hydrocarbons, priority pollutants with a wide range of physico-chemical properties, at coastal airports. Sixty percent of Australian airports are in the coastal plain, and all are affected by contamination from internationally banned fluoro-surfactants and ....Fluorinated surfactants and hydrocarbons at coastal airports. Fluorinated surfactants and hydrocarbons at coastal airports. This project aims to develop a model and parameters that describe transport and co-transport of fluoro-surfactants and hydrocarbons, priority pollutants with a wide range of physico-chemical properties, at coastal airports. Sixty percent of Australian airports are in the coastal plain, and all are affected by contamination from internationally banned fluoro-surfactants and hydrocarbons. Their extensive past use at firefighting training grounds resulted in costly remediation worldwide. Understanding the fate of persistent fluoro-surfactants from point sources, and their role in transporting non-polar chemicals such as hydrocarbons, will improve risk-based decision making. This research is expected to form the basis for effective risk management and intervention strategies.Read moreRead less
Unlocking the secrets of mangrove conservation success. This project aims to address the deterioration of mangrove ecosystems. Mangroves support fisheries, shoreline protection and carbon sequestration. The project aims to identify social-economic conditions that enable effective conservation in mangroves over multiple spatial scales. The project will use state of the art datasets and innovative modelling approaches to understand how factors such as population, governance and access to markets i ....Unlocking the secrets of mangrove conservation success. This project aims to address the deterioration of mangrove ecosystems. Mangroves support fisheries, shoreline protection and carbon sequestration. The project aims to identify social-economic conditions that enable effective conservation in mangroves over multiple spatial scales. The project will use state of the art datasets and innovative modelling approaches to understand how factors such as population, governance and access to markets influence changes in mangrove extent and restoration success. Expected outcomes include implementation of more effective environmental programs in Australia and overseas. This should provide significant benefits, including more cost-effective allocation of resources and increased delivery of ecosystem services.Read moreRead less
Quantifying the pathways and fluxes of iron to Moreton Bay. Recent investigations into the blooms of Lyngbya majuscula in Moreton Bay have identified dissolved iron, phosphorus and humic substances as important triggers of blooms. These chemicals are most likely sourced from land activities and transported by surface and ground water into the bay. Quantification of the groundwater discharge and associated chemical input to the bay has been identified by the Lyngbya Scientific Panel and the Lyng ....Quantifying the pathways and fluxes of iron to Moreton Bay. Recent investigations into the blooms of Lyngbya majuscula in Moreton Bay have identified dissolved iron, phosphorus and humic substances as important triggers of blooms. These chemicals are most likely sourced from land activities and transported by surface and ground water into the bay. Quantification of the groundwater discharge and associated chemical input to the bay has been identified by the Lyngbya Scientific Panel and the Lyngbya Management Steering Committee as a key issue for future Lyngbya scientific investigations. This project aims to investigate and quantify both surface and subsurface pathways and fluxes of iron to the bay.Read moreRead less
Multiphase flow and transport in complex coastal wetland systems. Salt marshes play an essential role in maintaining Australia's coastal bio-diversity. They also function as barriers to fluxes of terrestrial pollutants to our coastal sea. Australia has a large number of salt marshes listed by the Ramsar Convention as coastal wetlands of international importance but many of them are subject to loss and degradation due to competing land uses. This project, examining in detail the flow and transpor ....Multiphase flow and transport in complex coastal wetland systems. Salt marshes play an essential role in maintaining Australia's coastal bio-diversity. They also function as barriers to fluxes of terrestrial pollutants to our coastal sea. Australia has a large number of salt marshes listed by the Ramsar Convention as coastal wetlands of international importance but many of them are subject to loss and degradation due to competing land uses. This project, examining in detail the flow and transport processes in marsh soils, will lead to (1) better understanding of the marsh's response to anthropogenic stress; and (2) improvement of strategies and methods for marsh wetland preservation and restoration.Read moreRead less