Development of Viable Geopolymer. This project aims to improve the manufacture of geopolymer. Geopolymer (‘green cement’) is produced by alkali activation of fly ash and is a sustainable, low carbon dioxide alternative to conventional cement. Evaluation of raw materials and ensuring reliable performance are critical issues in geopolymer manufacture. The project aims to understand the geopolymerisation process and the behaviour of fly ash and activator in the process. It plans to establish a reac ....Development of Viable Geopolymer. This project aims to improve the manufacture of geopolymer. Geopolymer (‘green cement’) is produced by alkali activation of fly ash and is a sustainable, low carbon dioxide alternative to conventional cement. Evaluation of raw materials and ensuring reliable performance are critical issues in geopolymer manufacture. The project aims to understand the geopolymerisation process and the behaviour of fly ash and activator in the process. It plans to establish a reactivity index to quantitatively evaluate fly ash and match it with activator to achieve efficient activation with predictable properties. The project is expected to result in a scientific tool to assess fly ash suitability and a method to design and produce viable geopolymers.Read moreRead less
Tipping points and early warning signals in complex ecosystems. This project aims to create a theory of early warning that uses spatial data available on system state, connectivity and environmental stress, and to create tools to infer the risk of ecosystem collapse. Many ecosystems have irreversible tipping points. Since their locations are often unknown, metrics may provide an early warning of collapse but are difficult to apply because they need long time series which are usually lacking. Thi ....Tipping points and early warning signals in complex ecosystems. This project aims to create a theory of early warning that uses spatial data available on system state, connectivity and environmental stress, and to create tools to infer the risk of ecosystem collapse. Many ecosystems have irreversible tipping points. Since their locations are often unknown, metrics may provide an early warning of collapse but are difficult to apply because they need long time series which are usually lacking. This project will use the Great Barrier Reef as a testbed because it has both long time series (standard approach) and rich spatial data (new approach), and exhibits early warning signs. We will use these tools to gauge whether symptoms on the Great Barrier Reef predict local collapse and to develop intervention plans.Read moreRead less
Impact of increased sediment and nutrient discharges on the long-term sustainability of the Great Barrier Reef. The Great Barrier Reef, one of Australia's greatest natural assets, is under increasing threat from extreme climatic events caused by global warming and from land-based pollution. This research will identify the main sources of sediment and nutrient pollution caused by river runoff and by how much this has increased above 'natural levels'. We will discover how the very sensitive offsho ....Impact of increased sediment and nutrient discharges on the long-term sustainability of the Great Barrier Reef. The Great Barrier Reef, one of Australia's greatest natural assets, is under increasing threat from extreme climatic events caused by global warming and from land-based pollution. This research will identify the main sources of sediment and nutrient pollution caused by river runoff and by how much this has increased above 'natural levels'. We will discover how the very sensitive offshore coral reefs have responded to increased pollution and whether this is the cause of the very devastating crown-of-thorn-starfish infestations. Understanding the long-term effects of land-based pollution on the ecology of coral reefs in the GBR will thus provide a scientific basis to help ensure that it has a sustainable future.Read moreRead less
THE CORAL RECORD OF ENVIRONMENTAL IMPACTS IN THE GREAT BARRIER REEF:QUANTIFICATION OF ANTHROPOGENIC FLUXES. The objective of this proposal is to quantify the environmental impacts of enhanced terrestrial fluxes and climate change on the coral reefs in the Great Barrier Reef. This will be achieved by using an integrated approach based on coral proxy records of river plumes and sea surface temperatures that are preserved in carbonate skeletons of the long-lived (200-400 year old) Porites coral. ....THE CORAL RECORD OF ENVIRONMENTAL IMPACTS IN THE GREAT BARRIER REEF:QUANTIFICATION OF ANTHROPOGENIC FLUXES. The objective of this proposal is to quantify the environmental impacts of enhanced terrestrial fluxes and climate change on the coral reefs in the Great Barrier Reef. This will be achieved by using an integrated approach based on coral proxy records of river plumes and sea surface temperatures that are preserved in carbonate skeletons of the long-lived (200-400 year old) Porites coral. This will be integrated with monitoring and process studies of river flood plumes and coral reefs and provide a scientific basis to ensure the long-term sustainability of the GBR.Read moreRead less
Systematic planning beyond conservation: a multi-objective, multi action framework for sustainable biodiversity. When planning for conservation in rivers, protecting plants and animals can not simply be achieved by protecting parts of a river. This project will develop a strategy to sustain freshwater biodiversity that will optimally allocate conservation and restoration resources and minimises negative socioeconomic impacts on stakeholders.
Enhancing biodiversity and ecosystem services in production landscapes. This project aims to develop new approaches using causal inference, optimal allocation theory, and spatial statistics to characterise impacts on a diverse suite of ecosystem services. It will endeavour to develop case studies from three continents and generalisations explicitly tested using simulated landscapes. Environmental and agricultural policies promote land sharing (biodiversity-friendly production) or land sparing (p ....Enhancing biodiversity and ecosystem services in production landscapes. This project aims to develop new approaches using causal inference, optimal allocation theory, and spatial statistics to characterise impacts on a diverse suite of ecosystem services. It will endeavour to develop case studies from three continents and generalisations explicitly tested using simulated landscapes. Environmental and agricultural policies promote land sharing (biodiversity-friendly production) or land sparing (protected areas, with yield increases elsewhere). Yet the impacts of such policies in diverse contexts and for multiple outcomes are poorly understood. The project could advance our ability to deliver sustainable outcomes and more effective as well as equitable policies for production landscapes.Read moreRead less
The Indian Ocean Dipole, Australasian drought, and the great-earthquake cycle: Long-term perspectives for improved prediction. The protracted drought across Australia and Boxing Day 2004 earthquake in Sumatra defied prediction, and are causing incalculable environmental, economic, and social harm. Knowledge of past climate extremes will enhance our ability to predict climate change, and alleviate adverse affects for Australasian nations who miss-out in the future redistribution of life-giving mo ....The Indian Ocean Dipole, Australasian drought, and the great-earthquake cycle: Long-term perspectives for improved prediction. The protracted drought across Australia and Boxing Day 2004 earthquake in Sumatra defied prediction, and are causing incalculable environmental, economic, and social harm. Knowledge of past climate extremes will enhance our ability to predict climate change, and alleviate adverse affects for Australasian nations who miss-out in the future redistribution of life-giving moisture. Insights into the great-earthquake cycle will help fulfil Australia's responsibility to predict tsunamis, for the benefit of nations fringing Australasian seismotectonic zones. Development of improved techniques in palaeoclimatology, palaeoclimate modelling, and palaeoseismology will provide new collaborations and opportunities for research, training, and education.Read moreRead less
Linking phytoplankton to fisheries using zooplankton size spectra. This project aims to develop innovative numerical methods to understand the dynamics, carbon export, and trophic structure of zooplankton. The trophic links between phytoplankton, zooplankton and fisheries are unknown. The size- frequency distribution of zooplankton (size spectrum) is an innovative method for estimating their growth, predation and production as food for fish. Analysis of a global synthesis of zooplankton size dis ....Linking phytoplankton to fisheries using zooplankton size spectra. This project aims to develop innovative numerical methods to understand the dynamics, carbon export, and trophic structure of zooplankton. The trophic links between phytoplankton, zooplankton and fisheries are unknown. The size- frequency distribution of zooplankton (size spectrum) is an innovative method for estimating their growth, predation and production as food for fish. Analysis of a global synthesis of zooplankton size distributions from tropical to polar environments are expected to reveal these vital rates of pelagic ecosystems. The zooplankton rates will reveal, for the first time, the link between phytoplankton and fisheries, and will significantly improve ecosystem models and global assessments of environmental change.Read moreRead less
Thermal stratification, overturning and mixing in riverine environments. Thermal stratification is common in Australia's rivers due to our hot, drought-prone climate and high human demands relative to available supply, which has led to a significant reduction in flows relative to natural levels. Thermal stratification inhibits mixing, creating stagnant conditions characterised by low oxygen levels and increased concentrations of contaminants, leading to algal blooms, fish kills and systemic dama ....Thermal stratification, overturning and mixing in riverine environments. Thermal stratification is common in Australia's rivers due to our hot, drought-prone climate and high human demands relative to available supply, which has led to a significant reduction in flows relative to natural levels. Thermal stratification inhibits mixing, creating stagnant conditions characterised by low oxygen levels and increased concentrations of contaminants, leading to algal blooms, fish kills and systemic damage to ecosystems. The aim of this project is to develop predictive models for the effects of physical processes such as night-time cooling, wind, turbulence and currents on riverine thermal stratification. This is expected to enable a more accurate determination of the flow rates required to maintain the health of our river systems.Read moreRead less
Promoting Plant Innovation in Australia: maximising the benefits of intellectual property for Australian agriculture. The development of new plant varieties is crucial to the ongoing competitiveness and sustainability of Australian agriculture. It also has wider social, cultural and economic consequences. Intellectual property laws have the potential to promote and hinder the developments of new plant varieties. In recent years there has been a shift towards the use of patents to protect plant i ....Promoting Plant Innovation in Australia: maximising the benefits of intellectual property for Australian agriculture. The development of new plant varieties is crucial to the ongoing competitiveness and sustainability of Australian agriculture. It also has wider social, cultural and economic consequences. Intellectual property laws have the potential to promote and hinder the developments of new plant varieties. In recent years there has been a shift towards the use of patents to protect plant innovations: a trend which has the potential to transform existing research and development arrangements and industry practices in Australia. By providing policy-makers and stakeholders with recommendations on how to respond to and manage these changes, the project will promote plant breeding in Australia and also enhance the sustainability and competitiveness of Australian agriculture.Read moreRead less