The renaissance predator: complex predator-prey interactions and vertebrate diversity in arid Australia. This project will greatly increase understanding of how predators influence the ecology and diversity of their prey in Australia's deserts, and thus improve our ability to conserve and manage our iconic but fragile inland landscapes. It will increase awareness locally about the richness of desert life and stimulate national and international interest by contributing to emerging debate about h ....The renaissance predator: complex predator-prey interactions and vertebrate diversity in arid Australia. This project will greatly increase understanding of how predators influence the ecology and diversity of their prey in Australia's deserts, and thus improve our ability to conserve and manage our iconic but fragile inland landscapes. It will increase awareness locally about the richness of desert life and stimulate national and international interest by contributing to emerging debate about how predators influence diversity. It will also establish an unparalleled 24-year time series of ecological data, and thus provide a key resource to chart the biological effects of climate change and assist sustainable management of biodiversity across the continent's vast interior. Read moreRead less
Latitudinal gradients in biotic processes affecting plant growth and establishment. The idea that plant-animal interactions are more intense in the tropics underpins much thinking about tropical ecology, global patterns in plant traits, and latitudinal gradients in biodiversity. In this project, we will provide the first direct and global test of this idea by quantifying the intensity of herbivory, seed predation and density-dependent seedling mortality at approximately 100 study sites around th ....Latitudinal gradients in biotic processes affecting plant growth and establishment. The idea that plant-animal interactions are more intense in the tropics underpins much thinking about tropical ecology, global patterns in plant traits, and latitudinal gradients in biodiversity. In this project, we will provide the first direct and global test of this idea by quantifying the intensity of herbivory, seed predation and density-dependent seedling mortality at approximately 100 study sites around the world. We will also investigate the causes of these latitudinal gradients by determining which environmental variables are most closely associated with the strength of biotic interactions.Read moreRead less
Predicting Biodiversity from Population Dynamics. This research aims to deepen our understanding of how changes to the environment, including those attributable to human activities, influence the ecological and evolutionary mechanisms that generate and maintain biodiversity. This understanding is of urgent importance, in light of the predicted changes in climate and habitat over the next century, because biodiversity is critical to the proper functioning of ecosystems that human societies depend ....Predicting Biodiversity from Population Dynamics. This research aims to deepen our understanding of how changes to the environment, including those attributable to human activities, influence the ecological and evolutionary mechanisms that generate and maintain biodiversity. This understanding is of urgent importance, in light of the predicted changes in climate and habitat over the next century, because biodiversity is critical to the proper functioning of ecosystems that human societies depend upon. The graduate student involved in this research will have the opportunity to receive in-depth training as part of a cross-disciplinary collaboration that combines mathematics, ecology, evolution, and paleontology.
Read moreRead less
Desert island biogeography: vertebrate dynamics after fire-induced fragmentation of habitat in central Australia. Recent wildfires in the Simpson Desert have burnt over three million hectares of hummock grassland, creating an archipelago of unburnt spinifex islands amid extensive areas of bare sand. Small mammals and reptiles are now confined to these refugia. This project seeks to characterise the patchy distributional pattern of terrestrial vertebrates among spinifex islands, and to experiment ....Desert island biogeography: vertebrate dynamics after fire-induced fragmentation of habitat in central Australia. Recent wildfires in the Simpson Desert have burnt over three million hectares of hummock grassland, creating an archipelago of unburnt spinifex islands amid extensive areas of bare sand. Small mammals and reptiles are now confined to these refugia. This project seeks to characterise the patchy distributional pattern of terrestrial vertebrates among spinifex islands, and to experimentally evaluate factors (grazing, predators, food) influencing community recovery. Using an extensive prefire database, the project provides an unique and novel opportunity to chart and model responses of terrestrial vertebrates to wildfire, and to provide guidance for sustainable use of biodiversity in central Australia.Read moreRead less
Biodiversity enhancement in arid Australia: the importance of micro-refugia and biotic interactions. This project will dramatically increase our understanding of the factors that influence the biodiversity of Australia's deserts, and thus improve our ability to manage these iconic landscapes for both conservation and production needs. It will attract attention from the international community by helping to resolve contentious theoretical debate about the function of refuge habitats, and how spec ....Biodiversity enhancement in arid Australia: the importance of micro-refugia and biotic interactions. This project will dramatically increase our understanding of the factors that influence the biodiversity of Australia's deserts, and thus improve our ability to manage these iconic landscapes for both conservation and production needs. It will attract attention from the international community by helping to resolve contentious theoretical debate about the function of refuge habitats, and how species interact with each other to influence overall diversity. It will provide the longest time series of ecological data available for any Australian desert, and hence provide a key resource for increasing community awareness and achieving sustainable management of biodiversity throughout the continent's arid interior. Read moreRead less
What is the spatial and environmental distribution of phylogenetic diversity in the Australian biota? Almost nothing is known about the geographic distribution of phylogenetic relationships across Australia at fine resolutions of the order of tens of kilometres. The aim of this research is to map the spatial patterns of phylogenetic diversity in the Australian biota and identify possible environmental controls over them. We will analyse five disparate groups at a spatial resolution that is ord ....What is the spatial and environmental distribution of phylogenetic diversity in the Australian biota? Almost nothing is known about the geographic distribution of phylogenetic relationships across Australia at fine resolutions of the order of tens of kilometres. The aim of this research is to map the spatial patterns of phylogenetic diversity in the Australian biota and identify possible environmental controls over them. We will analyse five disparate groups at a spatial resolution that is orders of magnitude finer than previous research, analysing their relationship with possible environmental controls using advanced spatial analysis methods. The knowledge we will generate about the spatial distribution of these relationships is essential to understand and conserve Australia's unique biodiversity.Read moreRead less
Ecology of insect herbivore assemblages: influence of climate, evolutionary history and plant traits. The results from this project will be a key reference when assessing future impacts of human-induced impacts on natural communities. Our research will provide insights into the impacts of climate change on herbivorous insects associated with Acacia: the dominant plant genus in the major climatic zones of Australia. Results and conclusions from this research will aid land-holders, government agen ....Ecology of insect herbivore assemblages: influence of climate, evolutionary history and plant traits. The results from this project will be a key reference when assessing future impacts of human-induced impacts on natural communities. Our research will provide insights into the impacts of climate change on herbivorous insects associated with Acacia: the dominant plant genus in the major climatic zones of Australia. Results and conclusions from this research will aid land-holders, government agencies and other parties in determining how important Acacia-dominated ecosystems are in conserving insect biodiversity in a range of different habitats within regional and rural Australia. Our research will also aid in a better understanding of biocontrol agents of Australian Acacia pest species here and overseas.Read moreRead less
Unravelling the last great Gondwanan mystery: the first land vertebrate fauna from the Tertiary of New Zealand. This project will dramatically increase knowledge about Australia's and New Zealand's shared biodiversity and the history of trans-Tasman dispersals. By comparing Australian and New Zealand fossil records, it will be possible to assess the speed at which evolving vertebrates of one landmass invade another, as well as the biotic consequences of such events, and provide data important fo ....Unravelling the last great Gondwanan mystery: the first land vertebrate fauna from the Tertiary of New Zealand. This project will dramatically increase knowledge about Australia's and New Zealand's shared biodiversity and the history of trans-Tasman dispersals. By comparing Australian and New Zealand fossil records, it will be possible to assess the speed at which evolving vertebrates of one landmass invade another, as well as the biotic consequences of such events, and provide data important for predicting and responding to future potentially-damaging events of this kind. Developing understanding about the timing and intensity of antipodean faunal response to past climate change will improve ability to anticipate and manage processes that threaten ecosystem resilience in both lands.Read moreRead less
Comparative phylogeography and patterns of diversification in Amazonian fishes. I anticipate that this project will increase the research profile of Australia in the international scientific community by answering fundamental questions about the origin of biodiversity in the world's most diverse ecosystem, the lowland forests of central Amazonia. This will be achieved by analysing what will be the most comprehensive phylogeographic data set ever generated for Amazonian organisms. The project wil ....Comparative phylogeography and patterns of diversification in Amazonian fishes. I anticipate that this project will increase the research profile of Australia in the international scientific community by answering fundamental questions about the origin of biodiversity in the world's most diverse ecosystem, the lowland forests of central Amazonia. This will be achieved by analysing what will be the most comprehensive phylogeographic data set ever generated for Amazonian organisms. The project will provide information for comparing with patterns seen in the Australian wet tropics and will be inspirational for studies on population diversification of Australian fishes. Read moreRead less
Northern connections-movement of birds between Australia and its near northern neighbours. This project will better enable Australia to meet its international treaty obligations on migratory birds and provide much needed data on patterns of migratory connectivity in northern Australia. These data are critical for the conservation and management of bird species that spend part of their life-cycle outside Australia. The outputs of the project will be used to assist decision makers with policy and ....Northern connections-movement of birds between Australia and its near northern neighbours. This project will better enable Australia to meet its international treaty obligations on migratory birds and provide much needed data on patterns of migratory connectivity in northern Australia. These data are critical for the conservation and management of bird species that spend part of their life-cycle outside Australia. The outputs of the project will be used to assist decision makers with policy and management decisions relevant to (1) targeted surveillance for exotic and emergent diseases of relevance to Australia and (2) the conservation and management of bird populations in Northern Australia.Read moreRead less