Turning water into carbon: a synthesis of plant water-use efficiency from leaf to globe. The efficiency with which plants use water to gain carbon is a fundamental aspect of plant growth that has been frequently measured but is poorly understood. Using our new theory to draw together major datasets, the project will make a dramatic advance in our ability to understand and predict this key aspect of ecosystem function.
To grow or to store: Do plants hedge their bets? This project aims to resolve a long-standing question about the function of perennial plants: how much of the carbon taken up by photosynthesis is used immediately for growth, and how much is kept in reserve as insurance against future stress? This question is important to our understanding of how plants respond to stresses such as severe drought, and yet lack of data and theoretical modelling currently hampers our ability to answer it. By applyin ....To grow or to store: Do plants hedge their bets? This project aims to resolve a long-standing question about the function of perennial plants: how much of the carbon taken up by photosynthesis is used immediately for growth, and how much is kept in reserve as insurance against future stress? This question is important to our understanding of how plants respond to stresses such as severe drought, and yet lack of data and theoretical modelling currently hampers our ability to answer it. By applying novel data analysis and modelling tools to recent experimental results, the project plans to test hypotheses for how plants allocate carbon between growth and storage in response to stress. Insights from the project may underpin better management of Australia’s vulnerable ecosystems.Read moreRead less
Comparative eco-physiology of two contrasting arid-zone woodlands in Central Australia: hydrological niche separation and ecosystem resilience. This proposal addresses two fundamental questions: how do co-occurring species co-exist and why do Australian ecosystems have larger ecosystem water-use-efficiencies than those in the USA? This proposal will: determine the resilience of two contrasting arid-zone woodlands; compare variation in hydraulic-related plant traits across co-existing species; an ....Comparative eco-physiology of two contrasting arid-zone woodlands in Central Australia: hydrological niche separation and ecosystem resilience. This proposal addresses two fundamental questions: how do co-occurring species co-exist and why do Australian ecosystems have larger ecosystem water-use-efficiencies than those in the USA? This proposal will: determine the resilience of two contrasting arid-zone woodlands; compare variation in hydraulic-related plant traits across co-existing species; and, determine the relative contribution of changes in assimilation and stomatal conductance to variation (across species and time) in water-use-efficiency. Outcomes of this work include a mechanistic understanding of the behaviour of water-limited woodlands in current and future climates. This is significant because such biomes are globally important and are home to two billion people. Read moreRead less
Predicting the delivery of ecosystem services in agricultural landscapes. The ecological sustainability of Australian agriculture relies on services (for example, pollination) provided by ecosystems. Service provision is threatened by environmental change, but there is no established approach for predicting the impact of change on services. This project will undertake the most comprehensive experimental examination of ecosystem-service delivery ever conducted in Australia, testing the predictive ....Predicting the delivery of ecosystem services in agricultural landscapes. The ecological sustainability of Australian agriculture relies on services (for example, pollination) provided by ecosystems. Service provision is threatened by environmental change, but there is no established approach for predicting the impact of change on services. This project will undertake the most comprehensive experimental examination of ecosystem-service delivery ever conducted in Australia, testing the predictive capacity of an approach that links environmental change with variation in service provision through species’ traits. The major outcomes include greater capacity for agriculturalists to maximise ecosystem benefits and increase economic returns, and improved biodiversity conservation through recognition of its contribution to agriculture. Read moreRead less
A novel approach for assessing environmental flows using satellite data. This project will determine how ecosystems respond to environmental flow by linking flooding history with vegetation responses, using remote sensing, climate data layers, spatial statistics, models of environmental flows and ecological theory. Beneficiaries will include water and land managers in Australia.
Securing soil and water using carbon. This project will ascertain the role of sequestered carbon in positively impacting on chemical, physical and biological and associated feedback mechanisms in order to increase the capacity of soil to store water and carbon. This information will allow us to maximise our ability to manage and rehabilitate Australia's increasing degraded soil resource.
Upland swamps and chains-of-ponds as unique and rare Australian river types: understanding their function to improve conservation and rehabilitation. Upland swamps and chains-of-ponds are nationally listed endangered ecosystems. They regulate water supply and quality in catchments. This project will deliver science on the physical and ecological function of these systems so conservation and rehabilitation initiatives within catchment action plans are effectively designed and implemented.