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Measuring tree water use and calculating stand water use. The national benefit of this project is significant. Woodlands and forests transpire vast amounts of water into the atmosphere and this water is thus lost to human consumptive use. Given large variation in rainfall between years and between seasons, it is vital that water and catchment resource managers are able to estimate how much water is lost through trees. This allows estimation of the amount of water available for irrigation, drinki ....Measuring tree water use and calculating stand water use. The national benefit of this project is significant. Woodlands and forests transpire vast amounts of water into the atmosphere and this water is thus lost to human consumptive use. Given large variation in rainfall between years and between seasons, it is vital that water and catchment resource managers are able to estimate how much water is lost through trees. This allows estimation of the amount of water available for irrigation, drinking, other industrial uses or maintaining ecosystem health. This project will be the first to generate a mechanistic understanding thereby allowing estimates of water use across a range of woody ecosystems in Australia.Read moreRead less
Eucalypt growth in past and future environments - a novel approach to understanding the impacts of atmospheric CO2 and climate. The impact of climate change and rising atmospheric CO2 on Australia's plantation and native forests is a major concern for government and land managers. These forests are important for environmental, aesthetic, and economic purposes, including carbon sequestration and trading. Forests use large amounts of water, reducing stream flow and water supplies for rural and u ....Eucalypt growth in past and future environments - a novel approach to understanding the impacts of atmospheric CO2 and climate. The impact of climate change and rising atmospheric CO2 on Australia's plantation and native forests is a major concern for government and land managers. These forests are important for environmental, aesthetic, and economic purposes, including carbon sequestration and trading. Forests use large amounts of water, reducing stream flow and water supplies for rural and urban communities. Knowledge generated from the proposed project will provide insight into mechanisms driving productivity and water use of forests in current and future environments. The knowledge will be used by land managers and government to develop strategies to cope with future impacts of climate change.Read moreRead less
Insect herbivore and plant responses in eucalypt forests under climate change at physiological, species and community scales. Understanding the drivers for insect populations and vulnerabilities to climate change are the first steps to predicting adaptation and mitigation strategies to minimise impacts of climate change on forest biodiversity. Our research will quantify the outcome of climate change on the still neglected but important insect community associated with eucalypts in Australian for ....Insect herbivore and plant responses in eucalypt forests under climate change at physiological, species and community scales. Understanding the drivers for insect populations and vulnerabilities to climate change are the first steps to predicting adaptation and mitigation strategies to minimise impacts of climate change on forest biodiversity. Our research will quantify the outcome of climate change on the still neglected but important insect community associated with eucalypts in Australian forests. These insect communities are widespread, diverse and quintessential for the Australian economy and ecology. Apparent climate change is expected to cause biodiversity shifts, leading to outbreaks and extinctions of insects in eucalypt forests. Negative outcomes of impacts could also include the accumulation of leaf litter, increasing bush fire activity in the future.Read moreRead less
Spatially integrated estimates of landscape water fluxes at several contrasting sites. Woodlands transpire large amounts (> 80 % of rainfall) of water into the atmosphere and this water is lost from the catchment. Australia experiences large annual and seasonal variations in rainfall. Water and catchment managers need to estimate how much water is transpired, especially as climate and land-use practices change, as this determines how much water is available for drinking, use in mining, forestr ....Spatially integrated estimates of landscape water fluxes at several contrasting sites. Woodlands transpire large amounts (> 80 % of rainfall) of water into the atmosphere and this water is lost from the catchment. Australia experiences large annual and seasonal variations in rainfall. Water and catchment managers need to estimate how much water is transpired, especially as climate and land-use practices change, as this determines how much water is available for drinking, use in mining, forestry, irrigation, and for ecosystem health purposes. This project is the first to combine the use of scintillometry to compare spatially averaged rates of water use with development of a model to predict landscape water use. By using 4 contrasting ecosystems we shall provide a deep understanding of the controls of vegetation water use.Read moreRead less
The physiological ecology of forest succession: explaining shade tolerance variation in evergreen and deciduous trees. This work will strengthen both the theoretical framework and the local knowledge base for sustainable timber production from natural forests, and for habitat restoration programs (National Research Priority 1.5: Sustainable Use of Australia's Biodiversity). These same advances of global and local relevance will also enable better quality input into models predicting vegetation d ....The physiological ecology of forest succession: explaining shade tolerance variation in evergreen and deciduous trees. This work will strengthen both the theoretical framework and the local knowledge base for sustainable timber production from natural forests, and for habitat restoration programs (National Research Priority 1.5: Sustainable Use of Australia's Biodiversity). These same advances of global and local relevance will also enable better quality input into models predicting vegetation dynamics under climate change scenarios (Research Priority 1.7: Responding to climate change & variability). Furthermore, by clarifying relationships of shade tolerance with other stress-tolerance strategies, this work will help us understand the evolutionary potential of local floras to respond to global change.Read moreRead less
Mechanisms linking site water status and net primary productivity. Australia is the driest of all inhabited continents and also has the lowest primary productivity. This project will determine the mechanisms linking these observations. Through development of a detailed mechanistic understanding of how site water balance determines site productivity and application of this understanding in a state-of-the-art model, we shall improve forest and water resource management and our understanding of the ....Mechanisms linking site water status and net primary productivity. Australia is the driest of all inhabited continents and also has the lowest primary productivity. This project will determine the mechanisms linking these observations. Through development of a detailed mechanistic understanding of how site water balance determines site productivity and application of this understanding in a state-of-the-art model, we shall improve forest and water resource management and our understanding of the unique ecology of Australia.Read moreRead less
Plant : fungal symbioses in Australian forests - new perspectives using laser microdissection. Ericaceae are important components of the Australian flora in many habitats, including forests and fragile alpine regions that are significant to Australia's cultural and natural heritage, and several species are considered threatened. This project addresses the fundamental question of whether networks of symbiotic fungal mycelia act as below-ground bridges between Ericaceae plants and tree roots. If d ....Plant : fungal symbioses in Australian forests - new perspectives using laser microdissection. Ericaceae are important components of the Australian flora in many habitats, including forests and fragile alpine regions that are significant to Australia's cultural and natural heritage, and several species are considered threatened. This project addresses the fundamental question of whether networks of symbiotic fungal mycelia act as below-ground bridges between Ericaceae plants and tree roots. If demonstrated, this would alter current views of carbon and nutrient cycling in Australian forests and provide the basis for better informed decisions for the sustainable management of Australian forest resources. This is particularly important in the context of carbon sequestration and future climate change.Read moreRead less