Carbon uptake and water use by plants: is there pre-stomatal control? Society relies on mathematical descriptions of climate change, weather forecasting, crop performance, and other processes in which the control of carbon uptake and water loss by plants forms a basic element. Scientists also use the same element in ascribing sources and sinks of carbon dioxide (CO2), describing vegetation, hydrological and ecological processes. A key physiological assumption in this element is now in doubt and ....Carbon uptake and water use by plants: is there pre-stomatal control? Society relies on mathematical descriptions of climate change, weather forecasting, crop performance, and other processes in which the control of carbon uptake and water loss by plants forms a basic element. Scientists also use the same element in ascribing sources and sinks of carbon dioxide (CO2), describing vegetation, hydrological and ecological processes. A key physiological assumption in this element is now in doubt and we will test it rigorously and if necessary provide a robust alternative. We will do this by developing a novel 'window' on intact leaf functioning that will reveal the concentration of water vapour and other gases inside leaves.Read moreRead less
Enhancing long-term soil organic carbon sequestration. This project addresses National Research Priority One areas, restoration of land surfaces through sustainable land management practices and sequestration of carbon. The resulting data will be transferable to domestic and international sustainable agricultural and land rehabilitation applications. The project specifically addresses an area of global significance, the long-term, millennia rather than short-term sequestration of terrestrial car ....Enhancing long-term soil organic carbon sequestration. This project addresses National Research Priority One areas, restoration of land surfaces through sustainable land management practices and sequestration of carbon. The resulting data will be transferable to domestic and international sustainable agricultural and land rehabilitation applications. The project specifically addresses an area of global significance, the long-term, millennia rather than short-term sequestration of terrestrial carbon. There will be spin-off benefits including the provision of a formula for sustainable agriculture resources and localised employment opportunities, educational and financial incentives for farmers to improve on-farm soil health as well as health benefits from the reduction of atmospheric CO2.Read moreRead less
Why our biota is unique: ecophysiological response, adaptive radiation and changing environments in Cainozoic Australia. We seek to resolve Cainozoic diversification and extinction patterns leading to the modern Australian biota. We propose a broad-scale, multi-disciplinary approach involving systematic palaeontology, palaeobiology, biostratigraphy, molecular and morphological systematics and physiology of modern organisms. For the first time, we will synthesise data on past climatic and environ ....Why our biota is unique: ecophysiological response, adaptive radiation and changing environments in Cainozoic Australia. We seek to resolve Cainozoic diversification and extinction patterns leading to the modern Australian biota. We propose a broad-scale, multi-disciplinary approach involving systematic palaeontology, palaeobiology, biostratigraphy, molecular and morphological systematics and physiology of modern organisms. For the first time, we will synthesise data on past climatic and environmental influences on the evolution of Australian plants, animals and community structure through time. This will provide a solid historical basis to develop management strategies for the Australian biota under different, future, climatic scenarios, and will also provide a biostratigraphic framework essential for high-resolution mineral and hydrocarbon exploration.Read moreRead less
Effects of global climate change on marine phytoplankton: interactions between UV radiation and elevated atmospheric carbon dioxide levels. Global climate change is one of the most significant ecological challenges for the 21st Century. Phytoplankton contribute over 45% of the planet's annual net primary production and form the basis of most aquatic food chains. Conversely, some phytoplankton are toxic and cause problems in marine and fresh waters. Climate change can potentially disrupt aquatic ....Effects of global climate change on marine phytoplankton: interactions between UV radiation and elevated atmospheric carbon dioxide levels. Global climate change is one of the most significant ecological challenges for the 21st Century. Phytoplankton contribute over 45% of the planet's annual net primary production and form the basis of most aquatic food chains. Conversely, some phytoplankton are toxic and cause problems in marine and fresh waters. Climate change can potentially disrupt aquatic foodchains by its impact on primary production by phytoplankton or stimulating growth of potentially toxic forms. Our project will investigate the combined impact of increasing carbon dioxide and ultraviolet light on phytoplankton and thereby help climate modellers assess the impact of climate change on aquatic ecosystems and particularly on the nation's and the world's fisheries.Read moreRead less
What limits CO2 diffusion inside leaves? Dissecting the diffusion path with Arabidopsis mutants. Human induced increase in atmospheric carbon dioxide is now generally accepted as contributing to global warming. Forecasting our future impact relies on models of terrestrial photosynthesis which use a signature in the atmosphere created by plants when they discriminate against the heavy stable isotope of carbon during photosynthesis. Discrimination between isotopes is affected by carbon dioxide dif ....What limits CO2 diffusion inside leaves? Dissecting the diffusion path with Arabidopsis mutants. Human induced increase in atmospheric carbon dioxide is now generally accepted as contributing to global warming. Forecasting our future impact relies on models of terrestrial photosynthesis which use a signature in the atmosphere created by plants when they discriminate against the heavy stable isotope of carbon during photosynthesis. Discrimination between isotopes is affected by carbon dioxide diffusion within leaves and key steps in this process will be identified through the use of Arabidopsis mutants. Better representation of this process in models will improve estimates of terrestrial photosynthesis and climate change forecastsRead moreRead less
Special Research Initiatives - Grant ID: SR0354740
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
CaGaWaLo: regulation of carbon gain and water loss by woody vegetation. Trees and shrubs are widely perceived as central to solving problems of national and international significance. Seed funding is sought to facilitate establishment of a research network focused on their ability to sequester carbon and transmit water to the atmosphere. The proposed network is broadly based in plant physiology and ecology and contains a strong cross-section of leading international expertise in relevant sub- ....CaGaWaLo: regulation of carbon gain and water loss by woody vegetation. Trees and shrubs are widely perceived as central to solving problems of national and international significance. Seed funding is sought to facilitate establishment of a research network focused on their ability to sequester carbon and transmit water to the atmosphere. The proposed network is broadly based in plant physiology and ecology and contains a strong cross-section of leading international expertise in relevant sub-disciplines. By leveraging the huge pool of international expertise and focusing on a range of scales (from molecular to biosphere scales), this network will yield new ideas and approaches that will produce outputs and outcomes of national significance.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0882935
Funder
Australian Research Council
Funding Amount
$110,000.00
Summary
Tuneable diode laser for field and laboratory measurement of stable isotopes of CO2. The tuneable diode laser system will facilitate projects with major environmental benefits to Australia. Projects will provide major insights into Australia's CO2 balance. This will improve our ability to predict whether ecosystems are net sources or sinks for CO2 -- information that underpins Australia's greenhouse gas balance. The tuneable diode laser system will also benefit Australia's economy via enhanci ....Tuneable diode laser for field and laboratory measurement of stable isotopes of CO2. The tuneable diode laser system will facilitate projects with major environmental benefits to Australia. Projects will provide major insights into Australia's CO2 balance. This will improve our ability to predict whether ecosystems are net sources or sinks for CO2 -- information that underpins Australia's greenhouse gas balance. The tuneable diode laser system will also benefit Australia's economy via enhancing understanding of agricultural and forest production, a key portion of our GDP. These economic benefits will stem from new knowledge about the limitations to plant growth and the water-use efficiency of plants. Read moreRead less
Ecosystem level impacts of climate change on a temperate grassland. The sustainable use of temperate native pastures is important economically because of grazing and for biodiversity since they are home to many threatened plants. Native pasture sustainability depends on maintaining species diversity and vegetation productivity, both of which have been shown to change in response to climate change. The aims of this project are to elucidate what impact these changes have on the ecosystem propertie ....Ecosystem level impacts of climate change on a temperate grassland. The sustainable use of temperate native pastures is important economically because of grazing and for biodiversity since they are home to many threatened plants. Native pasture sustainability depends on maintaining species diversity and vegetation productivity, both of which have been shown to change in response to climate change. The aims of this project are to elucidate what impact these changes have on the ecosystem properties of a native pasture. This is important, as it will allow likely problems caused by global climate change to be predicted by increasing the understanding of the underlying mechanisms as well as improving the management of grasslands in an environmentally sustainable way. Read moreRead less
Mid-rotation diagnosis and management options for correction of water and nutrient deficiencies in plantation-grown eucalypts. This research will improve productivity of bluegum plantations by improving current diagnostic techniques (foliage and soil analysis) for nutrient disorders and the supply of water. Using a novel phloem sampling and analysis technique, we will develop a nutrient (e.g. N, P) and water diagnosis procedure that is quick, cheap, robust and reliable for field use. A major in ....Mid-rotation diagnosis and management options for correction of water and nutrient deficiencies in plantation-grown eucalypts. This research will improve productivity of bluegum plantations by improving current diagnostic techniques (foliage and soil analysis) for nutrient disorders and the supply of water. Using a novel phloem sampling and analysis technique, we will develop a nutrient (e.g. N, P) and water diagnosis procedure that is quick, cheap, robust and reliable for field use. A major innovation will be distinguishing the effects of shortages of water on growth from those of other growth influences. Overall, this project will provide a highly significant theoretical, conceptual and practical advance in mid-rotation, diagnostics for plantations with considerable commercial promise.Read moreRead less
Metabolite pools and their implications for plant responses to global change. Australian landscape management faces significant challenges from existing land practices and the effects of climate change. Effective management and targeted remediation requires an understanding of the processes that drive ecosystem function. The development of broadly applicable tools for the monitoring of plant and ecosystem health is therefore of considerable interest. Flexibility in core processes of plant functi ....Metabolite pools and their implications for plant responses to global change. Australian landscape management faces significant challenges from existing land practices and the effects of climate change. Effective management and targeted remediation requires an understanding of the processes that drive ecosystem function. The development of broadly applicable tools for the monitoring of plant and ecosystem health is therefore of considerable interest. Flexibility in core processes of plant function represents a significant opportunity to develop such tools. With a focus on plant metabolites, this project will characterise how Australian trees alter the allocation of resources to cope with environmental changes and produce metabolite-based selective traits for stress tolerance in Australian trees. Read moreRead less