Designing for uncertainty in conservation auctions. Economic theory and case study evidence show that tenders or auctions are more efficient than grant mechanisms for encouraging landholders to produce environmental outcomes on private land. These studies have ignored the effects of uncertainty of both bidders and administrators about factors such as landholder participation and the level of environmental benefits that will be delivered. This project will test whether distributing environmental ....Designing for uncertainty in conservation auctions. Economic theory and case study evidence show that tenders or auctions are more efficient than grant mechanisms for encouraging landholders to produce environmental outcomes on private land. These studies have ignored the effects of uncertainty of both bidders and administrators about factors such as landholder participation and the level of environmental benefits that will be delivered. This project will test whether distributing environmental funds via tenders is still efficient when uncertainty about various important factors is considered. Results from this research are expected to inform the cost effective design of systems to pay landholders for the provision of environmental benefits even when there is high uncertainty.Read moreRead less
Private Land Conservation in a Dynamically Changing and Risky World. Climate change, and the increasing risk of drought, heatwaves, and fire, have major implications for the design and effectiveness of private land conservation programs. This project aims to generate new knowledge about the effect of climate change on adoption and outcomes of private land conservation agreements. It will use an innovative social-ecological approach focused on koalas. Expected outcomes include an innovative frame ....Private Land Conservation in a Dynamically Changing and Risky World. Climate change, and the increasing risk of drought, heatwaves, and fire, have major implications for the design and effectiveness of private land conservation programs. This project aims to generate new knowledge about the effect of climate change on adoption and outcomes of private land conservation agreements. It will use an innovative social-ecological approach focused on koalas. Expected outcomes include an innovative framework to help make decisions about private land conservation investments under climate change. This should provide significant benefits for government and non-government organisations by providing solutions to climate-proof their conservation investments on private land in a rapidly changing world.Read moreRead less
Greenhouse gas emission from sugarcane and mangrove communities in coastal Queensland. Greenhouse gases threaten the global climate. Many estimates of vegetation as sinks and sources for greenhouse gases have a high degree of uncertainty. This project will generate important information about greenhouse gas emissions from Queensland coastal vegetation. Characterised by moist and nutrient rich conditions, sugarcane fields and mangrove ecosystems represent significant sources/sinks of potent green ....Greenhouse gas emission from sugarcane and mangrove communities in coastal Queensland. Greenhouse gases threaten the global climate. Many estimates of vegetation as sinks and sources for greenhouse gases have a high degree of uncertainty. This project will generate important information about greenhouse gas emissions from Queensland coastal vegetation. Characterised by moist and nutrient rich conditions, sugarcane fields and mangrove ecosystems represent significant sources/sinks of potent greenhouse gases nitrous oxide and methane. Sugarcane and mangroves exposed to different nutrient inputs will allow to (i) identify mechanisms of N2O and CH4 emission, (ii) model N2O and CH4 emissions under different nutrient and climate conditions, and (iii) control/reduce emissions by improving coastal ecosystem management.Read moreRead less
A Fundamental Understanding of Methane Driven Denitrification. Eutrophication in waterways due to the presence of nutrients including nitrogen is a well-recognised environmental problem. Moreton Bay, for example, used to receive 3,300 tons of nitrogen each year from point sources. Stringent nitrogen discharge limits have therefore been imposed on most wastewater treatment systems across Australia. Nitrogen removal from wastewater is commonly accomplished in a biological way involving the use of ....A Fundamental Understanding of Methane Driven Denitrification. Eutrophication in waterways due to the presence of nutrients including nitrogen is a well-recognised environmental problem. Moreton Bay, for example, used to receive 3,300 tons of nitrogen each year from point sources. Stringent nitrogen discharge limits have therefore been imposed on most wastewater treatment systems across Australia. Nitrogen removal from wastewater is commonly accomplished in a biological way involving the use of bacteria. The project aims to investigate a particular bacterial community, which is able to perform nitrogen removal from wastewater with methane as a renewable carbon source. The project will therefore lead to more sustainable wastewater treatment systems.Read moreRead less
Endogenous Processes in Biological Wastewater Treatment Systems. Biomass decay, or endogenous processes play a major role in biological wastewater treatment systems, but are poorly understood at present. Drawing on the expertise of four internationally leading groups in the area, we will carry out a comprehensive and profound study of these processes. The study will yield novel designs and operational strategies for wastewater treatment plants that optimise the microbial populations to achieve l ....Endogenous Processes in Biological Wastewater Treatment Systems. Biomass decay, or endogenous processes play a major role in biological wastewater treatment systems, but are poorly understood at present. Drawing on the expertise of four internationally leading groups in the area, we will carry out a comprehensive and profound study of these processes. The study will yield novel designs and operational strategies for wastewater treatment plants that optimise the microbial populations to achieve lower sludge production and higher treatment capacity and performance. It will also deliver a reliable, yet easy to use, model for endogenous processes. Furthermore, a number of highly skilled PhD students will be trained.Read moreRead less
Novel nitrogen removal process via nitrite in a biofilm system and analysis of microbial community dynamics. Nitrogen removal from wastewater is essential to protect our unique aquatic environment. This removal is typically achieved via two steps: Nitrification converts ammonium via nitrite to nitrate; denitrification converts nitrate via nitrite again to harmless nitrogen gas. This project will develop a biofilm reactor system, which enables this process to run via nitrite only, instead of nitr ....Novel nitrogen removal process via nitrite in a biofilm system and analysis of microbial community dynamics. Nitrogen removal from wastewater is essential to protect our unique aquatic environment. This removal is typically achieved via two steps: Nitrification converts ammonium via nitrite to nitrate; denitrification converts nitrate via nitrite again to harmless nitrogen gas. This project will develop a biofilm reactor system, which enables this process to run via nitrite only, instead of nitrate. Savings of 40% carbon and 25% oxygen requirements are possible this way. This process has not yet been demonstrated under controlled conditions, but recent progress in the research groups in Australia and Korea now offer novel ways to accomplish this promising process.Read moreRead less
Enhancing Biological Denitrification by Addition of External Carbon Sources: What, Where and When. External carbon addition for enhancing nitrogen removal is being increasingly used by wastewater treatment industry both in Australia and worldwide. This technology adds considerably to the operating cost, to which the non-optimal use of carbon sources has contributed significantly. To ensure long-term optimal denitrification performance with minimal use of external carbon, we will perform the firs ....Enhancing Biological Denitrification by Addition of External Carbon Sources: What, Where and When. External carbon addition for enhancing nitrogen removal is being increasingly used by wastewater treatment industry both in Australia and worldwide. This technology adds considerably to the operating cost, to which the non-optimal use of carbon sources has contributed significantly. To ensure long-term optimal denitrification performance with minimal use of external carbon, we will perform the first comprehensive study of the impact of external carbon addition on the denitrifying community and denitrification performance and, on this basis, answer the questions of what carbon sources should be used, where and when/how they should be added under various process design and operational conditions.Read moreRead less
Locating jobs to improve urban sustainability: investigating the Transport Impacts of Employment Decentralisation in Australian Cities (TIEDAC). This project investigates how the relocation of public sector employment to suburban nodes can improve the efficiency of Australian cities. The project will identify transport efficiencies from employment decentralisation that can reduce infrastructure costs for governments and reduce commuting distances for Australian urban residents.
Evaluating the role of buffer strips in reducing soil erosion and sediment delivery to water bodies. The role of vegetative buffer strips in reducing soil erosion and sediment delivery to water bodies is well established, but the physical processes and their interactions involved are not well understood. These hydraulic, sediment/chemical transport processes will be modelled from physical principles, recognising that the multi-size characteristics of soil plays a vital role in buffer strip effec ....Evaluating the role of buffer strips in reducing soil erosion and sediment delivery to water bodies. The role of vegetative buffer strips in reducing soil erosion and sediment delivery to water bodies is well established, but the physical processes and their interactions involved are not well understood. These hydraulic, sediment/chemical transport processes will be modelled from physical principles, recognising that the multi-size characteristics of soil plays a vital role in buffer strip effectiveness. This model will be validated using new and existing data sources, including both controlled experiments and field data obtained in Australia and overseas. A user friendly version of the model will be developed for farm managers and advisory services as a design tool.Read moreRead less
Reconstructing land tenure maps of Australia in 3D. Existing land tenure maps of above and below ground, such as apartment ownership, tunnels, and mining, are maintained using 2D drawings. However, the drawings are not structured and valuable for detailed and advanced visualisation, analytics, and simulation, which are essential for testing potential interventions and policy development. This project aims to develop a data validation framework for transforming current drawings and reconstructing ....Reconstructing land tenure maps of Australia in 3D. Existing land tenure maps of above and below ground, such as apartment ownership, tunnels, and mining, are maintained using 2D drawings. However, the drawings are not structured and valuable for detailed and advanced visualisation, analytics, and simulation, which are essential for testing potential interventions and policy development. This project aims to develop a data validation framework for transforming current drawings and reconstructing them into 3D models. The outcomes include validation principles, formal mathematical terms, and computational algorithms. Benefits include a cost-effective onshore alternative to offshore 3D reconstruction practices, efficient land development and infrastructure planning, and fewer property disputes.Read moreRead less