Predicting the Impact of Damming on the Endangered Mary River Turtle. Little is known about the effects of inland river alteration on the ecology of freshwater turtles, where river damming results in dramatic changes in river physical, chemical and biological characteristics. In Australia there are 446 large dams, necessary for hydro-electric power, navigation, flood control, irrigation and drinking water. Many of these rivers are inhabited by freshwater turtles, endemic to Australia, and this ....Predicting the Impact of Damming on the Endangered Mary River Turtle. Little is known about the effects of inland river alteration on the ecology of freshwater turtles, where river damming results in dramatic changes in river physical, chemical and biological characteristics. In Australia there are 446 large dams, necessary for hydro-electric power, navigation, flood control, irrigation and drinking water. Many of these rivers are inhabited by freshwater turtles, endemic to Australia, and this project will assess the impact of changes in habitat quality on the endangered Mary River Turtle (Elusor macrurus). The study comes at a timely opportunity, as proposed river damming will substantially alter the turtles' habitat, and its survival potential remains unknown.Read moreRead less
Towards sustainable bioproduction systems: harnessing organic nitrogen for plant growth. It is of great concern that over 50% of nitrogen fertiliser applied to crops is lost to the environment, resulting in a large environmental footprint and greenhouse gas emission. Future farming systems have to reduce nitrogen fertiliser use but this threatens crop and biofuel production. Alternatives to man-made nitrogen fertilisers are crop residues and organic materials which are more stable in soils but l ....Towards sustainable bioproduction systems: harnessing organic nitrogen for plant growth. It is of great concern that over 50% of nitrogen fertiliser applied to crops is lost to the environment, resulting in a large environmental footprint and greenhouse gas emission. Future farming systems have to reduce nitrogen fertiliser use but this threatens crop and biofuel production. Alternatives to man-made nitrogen fertilisers are crop residues and organic materials which are more stable in soils but less available to plants. How plants can best access organic nitrogen will be explored, based on our recent discovery that plants can use protein as a nitrogen source for growth. The project will produce essential knowledge for nitrogen-efficient bioproduction.Read moreRead less
Hoop pine nitrogen and water use efficiency: improving the understanding and management with advanced stable isotope, physiological and molecular techniques. This project represents the first attempt to integrate the use of innovative stable isotope, physiological and molecular techniques for improving the understanding and management of genetic and environmental factors regulating hoop pine nitrogen use efficiency (NUE) and water use efficiency (WUE). The successful conduct of the project will ....Hoop pine nitrogen and water use efficiency: improving the understanding and management with advanced stable isotope, physiological and molecular techniques. This project represents the first attempt to integrate the use of innovative stable isotope, physiological and molecular techniques for improving the understanding and management of genetic and environmental factors regulating hoop pine nitrogen use efficiency (NUE) and water use efficiency (WUE). The successful conduct of the project will result in improved stable isotope, physiological and molecular techniques for NUE and WUE studies; improved understanding and management of hoop pine NUE and WUE for enhancing plantation productivity; and successful training of a high-calibre postgraduate student and sustaining a pool of world-class researchers to meet the needs of Australian forest industry.Read moreRead less
ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ....ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ecoinformatics and evolutionary theory. Across this span, working groups will target nine identified opportunities for breakthrough research. Each research target needs input from two or more disciplines. Together, the nine targets link across disciplines, as a network that spans from genomic to planetary scales.Read moreRead less
Interactive effects of salinity and nutrients: linking physiological processes with patterns in mangrove forest productivity. The proposed research will provide insight into physiological mechanisms that underpin mangrove productivity along salinity and aridity gradients, and determine how these factors affect plant responses to nutrient enrichment. Plant traits that increase salt and drought tolerance will be identified, thereby assisting development of plant varieties suited to Australian cond ....Interactive effects of salinity and nutrients: linking physiological processes with patterns in mangrove forest productivity. The proposed research will provide insight into physiological mechanisms that underpin mangrove productivity along salinity and aridity gradients, and determine how these factors affect plant responses to nutrient enrichment. Plant traits that increase salt and drought tolerance will be identified, thereby assisting development of plant varieties suited to Australian conditions. The results will also contribute to development of process-based models to better manage mangrove resources with climate change and increasing nutrient influx from urban or agricultural activities. Such models are essential for managing mangrove productivity for sustainable fisheries, and protecting the ecological well being of the coastal zone.Read moreRead less
Salinity tolerance along an aridity gradient: linking physiological processes with morphological constraints on leaf function in mangroves. The proposed research will provide insight into the physiological and morphological features that control the productivity of mangrove forests across broad gradients in salinity and aridity. Central to this is this identification of plant traits that increase salt and drought tolerance, which will assist in the development of plant varieties suited to Austra ....Salinity tolerance along an aridity gradient: linking physiological processes with morphological constraints on leaf function in mangroves. The proposed research will provide insight into the physiological and morphological features that control the productivity of mangrove forests across broad gradients in salinity and aridity. Central to this is this identification of plant traits that increase salt and drought tolerance, which will assist in the development of plant varieties suited to Australian conditions. The results will also contribute to development of process-based models to better predict the response of mangrove vegetation to changing climate. A deep understanding of the processes that influence the growth and survival of mangroves is of fundamental importance to sustainable fisheries and protection of wildlife reliant on coastal ecosystems. Read moreRead less
Plant cell wall - aluminium interactions: a role in aluminium stress. Soil acidity, resulting in Al toxicity, affects production on circa 50% of Australia's intensively used agricultural land, resulting in 8.5 times more foregone agricultural income than dryland salinity (National Land and Water Resources Audit, 2001). Often, remediation with lime is not possible or affordable. By understanding Al reactions with cell wall components, we aim to identify root parameters related to Al resistance by ....Plant cell wall - aluminium interactions: a role in aluminium stress. Soil acidity, resulting in Al toxicity, affects production on circa 50% of Australia's intensively used agricultural land, resulting in 8.5 times more foregone agricultural income than dryland salinity (National Land and Water Resources Audit, 2001). Often, remediation with lime is not possible or affordable. By understanding Al reactions with cell wall components, we aim to identify root parameters related to Al resistance by plants. These parameters will be useful as selection markers to identify and breed Al-tolerant crop genotypes. This, in turn, will improve yields and farm profitability, allowing farmers to use lime to prevent further acidification. This increases sustainability of cropping operations on the 50 Mha with acid soils.Read moreRead less
Eco-Turf: Water and nutrient use efficient turfgrasses from Australian biodiversity. Domestic water consumption in Australia is approximately 30% higher than the OECD average. Approximately one third of domestic water consumption is applied to the garden, including turfgrass lawns. Turfgrasses are significant users of fertilisers, which can lead to problems with runoff and infiltration into the water table. We will use the unique diversity of Australian couch grasses to identify new turfs for ....Eco-Turf: Water and nutrient use efficient turfgrasses from Australian biodiversity. Domestic water consumption in Australia is approximately 30% higher than the OECD average. Approximately one third of domestic water consumption is applied to the garden, including turfgrass lawns. Turfgrasses are significant users of fertilisers, which can lead to problems with runoff and infiltration into the water table. We will use the unique diversity of Australian couch grasses to identify new turfs for domestic, sportsground and amenity lawns. This project will develop tools to select turfgrasses that maintain quality with reduced inputs of water and nutrients, leading to an overall reduction in resource use and downstream ecological effects. Benefits of this project extend to urban and rural communities Australia-wide.Read moreRead less