Heterarchical modelling of nutritional ecology: from individuals to communities. The project will combine advances in nutritional theory, agent-based modelling and landscape ecology to produce a modelling framework with which to understand the interrelationships between the physiology and behaviour of individual organisms and the populations, communities and ecosystems in which they reside. The resulting computational model will provide a major new initiative in quantitative ecology and allow sp ....Heterarchical modelling of nutritional ecology: from individuals to communities. The project will combine advances in nutritional theory, agent-based modelling and landscape ecology to produce a modelling framework with which to understand the interrelationships between the physiology and behaviour of individual organisms and the populations, communities and ecosystems in which they reside. The resulting computational model will provide a major new initiative in quantitative ecology and allow specific practical problems to be addressed in relation to agricultural pests, invasive species, conservation biology and animal production systems.Read moreRead less
Ecological and evolutionary impacts of toxic prey. The current invasion of feral cane toads into the Australian wet-dry tropics provides a unique opportunity to study natural selection in action. These highly toxic anurans kill many of the predators that attempt to ingest them. Within two years, the toads will reach a floodplain near Darwin where we are conducting a longterm (already, > 15-year) ecological research program on snakes. The knowledge and data base resulting from this program, pl ....Ecological and evolutionary impacts of toxic prey. The current invasion of feral cane toads into the Australian wet-dry tropics provides a unique opportunity to study natural selection in action. These highly toxic anurans kill many of the predators that attempt to ingest them. Within two years, the toads will reach a floodplain near Darwin where we are conducting a longterm (already, > 15-year) ecological research program on snakes. The knowledge and data base resulting from this program, plus many thousands of individually-marked predators whose home ranges and demographic histories are known, provide a unique opportunity to examine the ecological and evolutionary impact of toads.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775666
Funder
Australian Research Council
Funding Amount
$200,000.00
Summary
Flora and Fauna Research Facility. Our ability to make informed decisions regarding conservation and management of unique Australian ecosytems depends greatly on our understanding of the organisms inhabiting them. Researchers at the University of Wollongong are addressing this need through a wide range of studies including the: effects of climate change on plants, biology of invasive species, possible causes for declining frog populations, role of the immune system in aging and natural selection ....Flora and Fauna Research Facility. Our ability to make informed decisions regarding conservation and management of unique Australian ecosytems depends greatly on our understanding of the organisms inhabiting them. Researchers at the University of Wollongong are addressing this need through a wide range of studies including the: effects of climate change on plants, biology of invasive species, possible causes for declining frog populations, role of the immune system in aging and natural selection, effects of maternal hormones on offspring, effects of pesticides on native vertebrates, and impacts of bushfires on ecosystems. The infrastructure requested will enable research in these and other important areas.Read moreRead less
Boom and bust: the role of fire and rain in driving the dynamics of seeds and rodents in arid Australia. The arid Australian environment oscillates between spectacular boom periods, when biotic productivity and diversity are high, and busts, when biotic resources are depleted. This project first outlines a conceptual model of this dynamic and complex system. It then investigates the roles of rainfall and fire in driving boom-bust events, focusing particularly on food resources (seeds) and their ....Boom and bust: the role of fire and rain in driving the dynamics of seeds and rodents in arid Australia. The arid Australian environment oscillates between spectacular boom periods, when biotic productivity and diversity are high, and busts, when biotic resources are depleted. This project first outlines a conceptual model of this dynamic and complex system. It then investigates the roles of rainfall and fire in driving boom-bust events, focusing particularly on food resources (seeds) and their consumers (desert rodents) in the hyper-variable Simpson Desert. We propose observations and experiments to quantify how these climatic events affect seed production, seed fate, and ultimately the dynamics of desert rodents, and outline their importance for effective management of the desert environment.Read moreRead less
The role of plant chemical defences in the population ecology of mammal herbivores. Plants defend themselves against herbivores by producing toxic compounds in their leaves. Many studies show that such compounds influence diet selection by mammal herbivores, but we understand much less about their effects on populations of such species. This project will investigate how concentrations of leaf toxins in eucalypts affect reproductive success, distribution and abundance of the marsupials that feed ....The role of plant chemical defences in the population ecology of mammal herbivores. Plants defend themselves against herbivores by producing toxic compounds in their leaves. Many studies show that such compounds influence diet selection by mammal herbivores, but we understand much less about their effects on populations of such species. This project will investigate how concentrations of leaf toxins in eucalypts affect reproductive success, distribution and abundance of the marsupials that feed on them. The knowledge gained by this study will be important in modelling populations of these marsupial species and predicting their responses to environmental change.Read moreRead less
Influence of energy intake on reproduction. Understanding reproduction is fundamentally important to ecology and conservation. Despite intensive research, the processes that regulate energy acquisition and allocation for reproduction are still unclear for most animal species. Many of the obstacles to progress in this field of research are logistical, reflecting the complexity and temporal overlap of significant components of energy allocation pathways. Our proposed study avoids many of these l ....Influence of energy intake on reproduction. Understanding reproduction is fundamentally important to ecology and conservation. Despite intensive research, the processes that regulate energy acquisition and allocation for reproduction are still unclear for most animal species. Many of the obstacles to progress in this field of research are logistical, reflecting the complexity and temporal overlap of significant components of energy allocation pathways. Our proposed study avoids many of these logistical difficulties by focusing on animals (snakes) that display clear temporal partitioning between successive segments of the reproductive cascade (i.e., vitellogenesis, ovulation, embryogenesis); and by adopting a simple but novel method (based on stable isotope analysis) to tease apart the relationship between energy acquisition and energy expenditure in different phases of the animal's life-history.Read moreRead less
Putting adaptation into vegetation models: towards a predictive theory of trait diversity and stand structure. By incorporating natural selection into models of vegetation, this project will help to predict what sorts of plants are found where and why. This will greatly improve the ability to predict the likely outcomes of human impacts (changing climates, increased disturbance, logging) for future vegetation and species diversity.
Australian Laureate Fellowships - Grant ID: FL100100080
Funder
Australian Research Council
Funding Amount
$2,859,732.00
Summary
Evolutionary ecology of vegetation. A more fundamental understanding will be developed about the architecture and ecology of vegetation and why it varies around the world. Understanding confers benefits for land management as well as cultural value. Under a high carbon dioxide future scenario, models will be needed that operate through fundamental mechanisms of evolution, competition and physiology, rather than through extrapolation from present-day plants. Australia is a leader in globalising p ....Evolutionary ecology of vegetation. A more fundamental understanding will be developed about the architecture and ecology of vegetation and why it varies around the world. Understanding confers benefits for land management as well as cultural value. Under a high carbon dioxide future scenario, models will be needed that operate through fundamental mechanisms of evolution, competition and physiology, rather than through extrapolation from present-day plants. Australia is a leader in globalising plant trait ecology, and the program will develop that role further. Through intensive short courses within the Sydney basin and at national scale, research capacity will be developed towards the coming four-way fusion among functional ecology, earth system science, comparative genomics and palaeobiology.Read moreRead less
On the importance of sex in plants: determining which biotic and environmental factors favour sexual versus clonal reproduction. This project will use plants to provide novel tests of the idea that sex helps species escape from their parasites and pathogens, and that sexual species are faster to adapt to changed environmental conditions than are clonal species. The findings will help predict how plants will respond to future changes in climate and parasite pressure.
Australian alpine seed ecology: Plant conservation and adaptation to climate change. The Australian alpine region is critically vulnerable to climate change. Many alpine plant species are already threatened. Our project facilitates effective management of Australian alpine flora, enabling us to preserve alpine biodiversity and improve ecosystem resilience to climate change. Seed banking provides conservation of nationally vulnerable and threatened flora, providing insurance against extinction. O ....Australian alpine seed ecology: Plant conservation and adaptation to climate change. The Australian alpine region is critically vulnerable to climate change. Many alpine plant species are already threatened. Our project facilitates effective management of Australian alpine flora, enabling us to preserve alpine biodiversity and improve ecosystem resilience to climate change. Seed banking provides conservation of nationally vulnerable and threatened flora, providing insurance against extinction. Our exemplary contribution to global seed conservation provides a national resource of alpine seeds for revegetation and research and interpretive resources at the Australian National Botanic Gardens facilitate public awareness of the ecological significance and fragility of Australian alpine ecology in response to climate change.Read moreRead less