Does climatic thermal variability matter? This project aims to research how annual and daily variability in temperature effects the distribution of species, their tolerance to temperature, their dispersal ability and genetic structuring. Expected outcomes include more accurate assessment of the ecological risk of climate change, which is expected to result in altered average temperatures and temperature variability. Such assessments will result in better management of species and ecosystems faci ....Does climatic thermal variability matter? This project aims to research how annual and daily variability in temperature effects the distribution of species, their tolerance to temperature, their dispersal ability and genetic structuring. Expected outcomes include more accurate assessment of the ecological risk of climate change, which is expected to result in altered average temperatures and temperature variability. Such assessments will result in better management of species and ecosystems facing threats from climate change.Read moreRead less
Drought-induced mortality in arid-zone tree species: a mechanistic study. This project aims to determine the relative importance of elevated temperature and increased vapour pressure deficit during drought in causing drought induced mortality (DIM). The outcomes of this project will be an enhanced ability to predict future mortality in response to a warmer and atmospherically drier climate. This will benefit the development of future management strategies and our ability to predict drought impac ....Drought-induced mortality in arid-zone tree species: a mechanistic study. This project aims to determine the relative importance of elevated temperature and increased vapour pressure deficit during drought in causing drought induced mortality (DIM). The outcomes of this project will be an enhanced ability to predict future mortality in response to a warmer and atmospherically drier climate. This will benefit the development of future management strategies and our ability to predict drought impacts on landscape function and productivity.Read moreRead less
Sex is important in adaptation to environmental change. Aims: This project will use novel experiments with the aim of determining the potential for plasticity to be adaptive with sexual selection and how non-genetic effects transfer across generations by establishing genomic mechanisms. Significance: Plasticity (or acclimation) is often hailed as the saviour for species in the face of rapid climate change, but it is problematic if it is not adaptive in nature. Expected outcomes: Expected outcome ....Sex is important in adaptation to environmental change. Aims: This project will use novel experiments with the aim of determining the potential for plasticity to be adaptive with sexual selection and how non-genetic effects transfer across generations by establishing genomic mechanisms. Significance: Plasticity (or acclimation) is often hailed as the saviour for species in the face of rapid climate change, but it is problematic if it is not adaptive in nature. Expected outcomes: Expected outcomes include an enhanced ability to predict adaptation of fish under environmental change. Benefits: This project will provide significant benefits to Australian and international communities that rely on fish for nutrition, economic and social values, through an improved evidence base to inform management.Read moreRead less
Will trees get enough nitrogen to sustain productivity in elevated CO2? The project proposes to explore how tissue nitrogen declines in future elevated carbon dioxide (eCO2) by studying the availability of soil nitrogen to plants and use of nitrogen by Eucalyptus woodland trees. Plant canopy nitrogen concentrations decline in nearly every large-scale eCO2 study done on native soils. The project plans to explore how changes in ecosystem nitrogen balance occur, by investigating if leaf nitrogen de ....Will trees get enough nitrogen to sustain productivity in elevated CO2? The project proposes to explore how tissue nitrogen declines in future elevated carbon dioxide (eCO2) by studying the availability of soil nitrogen to plants and use of nitrogen by Eucalyptus woodland trees. Plant canopy nitrogen concentrations decline in nearly every large-scale eCO2 study done on native soils. The project plans to explore how changes in ecosystem nitrogen balance occur, by investigating if leaf nitrogen declines under eCO2 due to the balance of plant activity versus changes in soil nitrogen availability. The outcomes are central to knowing the extent to which extra nitrogen ‘feeds’ the eCO2 fertilisation response and sustains long-term increases in productivity. Expected outcomes may support the development of management options to sustain future forest productivity.Read moreRead less
Resilience of eucalypts to future droughts. This project aims to examine how resilient Eucalyptus species are to future droughts by combining data synthesis, manipulative experiments and modelling. Climate change is expected to increase the frequency, magnitude and duration of future droughts, with major environmental and socio-economic consequences for Australia. Current predictive capacity is extremely limited: experiments are limited in scale and cannot capture important global change interac ....Resilience of eucalypts to future droughts. This project aims to examine how resilient Eucalyptus species are to future droughts by combining data synthesis, manipulative experiments and modelling. Climate change is expected to increase the frequency, magnitude and duration of future droughts, with major environmental and socio-economic consequences for Australia. Current predictive capacity is extremely limited: experiments are limited in scale and cannot capture important global change interactions, whilst models do not represent the functional characteristics and adaptions of eucalypts. This project will develop a strong evidence- and process-based understanding to quantify the functional behaviour of drought-adapted Eucalyptus species and leverage this insight to make future model projections.Read moreRead less
Annual rainfall variability and extreme drought over the late Holocene. This project aims to understand long-term rainfall variability for Australia by developing a network of extended, high resolution rainfall records from tree rings. How anthropogenic changes to the atmosphere have influenced changing rainfall patterns across Australia is unclear. By extracting climatic information from tree growth rings across a latitudinal gradient from the subtropical north to the south coast of western Aus ....Annual rainfall variability and extreme drought over the late Holocene. This project aims to understand long-term rainfall variability for Australia by developing a network of extended, high resolution rainfall records from tree rings. How anthropogenic changes to the atmosphere have influenced changing rainfall patterns across Australia is unclear. By extracting climatic information from tree growth rings across a latitudinal gradient from the subtropical north to the south coast of western Australia, the project will extend hydroclimatic records by several centuries, to identify the frequency and extent of extreme droughts across the continent. Outcomes are expected to provide appropriate context for evaluating and adapting to climate change, allowing climate modellers, agricultural producers and other industries to improve forecasts of likely change for risk management.Read moreRead less
Brown is the new green: grassland responses to drought and heat. This project aims to improve accuracy and precision in predicting the impact of water availability and heat stress on grassland function. Grassland ecosystems are important reservoirs of global biodiversity and carbon storage. Grasslands are highly sensitive to drought and heat stress, but studies recently showed that current grassland models cannot predict these responses because they do not adequately represent the key processes ....Brown is the new green: grassland responses to drought and heat. This project aims to improve accuracy and precision in predicting the impact of water availability and heat stress on grassland function. Grassland ecosystems are important reservoirs of global biodiversity and carbon storage. Grasslands are highly sensitive to drought and heat stress, but studies recently showed that current grassland models cannot predict these responses because they do not adequately represent the key processes of physiological drought tolerance, leaf browning, and species traits. This project will collect targeted data sets in order to develop and test model representations of these key processes. This will provide significant benefits, such as greatly increasing capacity to predict the impact of drought and heat stress on grasslands, at scales ranging from field to globe.Read moreRead less
Understanding the survival of forests under drought . Droughts are predicted to become more extreme in the near future, with potentially devastating impacts on Australian forest ecosystems. This project aims to address key knowledge gaps in our understanding of how plants tolerate extreme drought stress and utilise this new knowledge to improve vegetation models suitable for assessing ecosystem vulnerability. We will use innovative experimental methodology to determine the processes by which wat ....Understanding the survival of forests under drought . Droughts are predicted to become more extreme in the near future, with potentially devastating impacts on Australian forest ecosystems. This project aims to address key knowledge gaps in our understanding of how plants tolerate extreme drought stress and utilise this new knowledge to improve vegetation models suitable for assessing ecosystem vulnerability. We will use innovative experimental methodology to determine the processes by which water transport breaks down in roots, stems and leaves and the mechanisms governing recovery from severe drought stress. The project will provide a deeper understanding of drought tolerance in trees, improved forecasting of risks to native vegetation, and enhanced management of native forest resources. Read moreRead less
How climate-resilient are our temperate fisheries species? This project assesses the resilience of our temperate fisheries species to climate change. Using natural warming hotspots and volcanic CO2 vents we study populations of fisheries species that are already pre-adapted to future climate, and therefore could act as key populations for replenishment of future fisheries stocks. An innovative and interdisciplinary approach combines the ecology, genetics, behaviour, and physiology of fisheries s ....How climate-resilient are our temperate fisheries species? This project assesses the resilience of our temperate fisheries species to climate change. Using natural warming hotspots and volcanic CO2 vents we study populations of fisheries species that are already pre-adapted to future climate, and therefore could act as key populations for replenishment of future fisheries stocks. An innovative and interdisciplinary approach combines the ecology, genetics, behaviour, and physiology of fisheries species to evaluate their climate resilience. An advanced food web model will be developed to forecast changes to fisheries production in a future world. This provides a much-improved forecast of climate adaptation and managing future biodiversity and fisheries species through resilient genes and populations.Read moreRead less
Is climate change altering the carrying capacity of the world’s forests? Planting trees at a global scale has been proposed as a key strategy to reduce global atmospheric CO2 levels. However, changing climatic conditions threaten the ability of forests to be net CO2 absorbers. In a warmer and drier future, forests may not be able to support as many trees. This project aims to identify how climate will alter
forest carrying capacity across millions of hectares of the world’s forests. By combining ....Is climate change altering the carrying capacity of the world’s forests? Planting trees at a global scale has been proposed as a key strategy to reduce global atmospheric CO2 levels. However, changing climatic conditions threaten the ability of forests to be net CO2 absorbers. In a warmer and drier future, forests may not be able to support as many trees. This project aims to identify how climate will alter
forest carrying capacity across millions of hectares of the world’s forests. By combining recent advances in forest modelling with large-scale and long-term forest inventory data, the project will develop a novel framework to forecast forest dynamics under climate change. It will provide specific guidelines to inform global reforestation strategies and foster climate-smart forest management.Read moreRead less