How are visual gene pathways lost and restored during reptile evolution? This project aims to investigate how complex traits are lost during evolution, and once lost if they can be regained. The project will use the diverse visual systems of snakes and lizards to shed light on the process of gene loss in degenerative lineages, and discover the mechanisms that compensate for gene losses in taxa with secondarily evolved visual capabilities- providing a case of evolutionary re-innovation in complex ....How are visual gene pathways lost and restored during reptile evolution? This project aims to investigate how complex traits are lost during evolution, and once lost if they can be regained. The project will use the diverse visual systems of snakes and lizards to shed light on the process of gene loss in degenerative lineages, and discover the mechanisms that compensate for gene losses in taxa with secondarily evolved visual capabilities- providing a case of evolutionary re-innovation in complex traits.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150100542
Funder
Australian Research Council
Funding Amount
$355,000.00
Summary
Understanding adaptation of plants along environmental clines. This project aims to address a key debate on the relative roles of dispersal and selection on adaptation, testing how life history traits determine the magnitude of adaptation. Since dispersal should override selection, this project endeavours to show that plants that strongly disperse will display weaker signals of adaptation but a higher capacity to adapt. The project aims to test these predictions with ecological genomics and func ....Understanding adaptation of plants along environmental clines. This project aims to address a key debate on the relative roles of dispersal and selection on adaptation, testing how life history traits determine the magnitude of adaptation. Since dispersal should override selection, this project endeavours to show that plants that strongly disperse will display weaker signals of adaptation but a higher capacity to adapt. The project aims to test these predictions with ecological genomics and functional genetics at a multi-species scale across climate gradients in South Australia, using a novel design that separates dispersal (isolation-by-distance) from selection (isolation-by-ecology). This understanding will provide improved conservation planning that seeks to restore resilience to biological communities that are under increasing environmental pressures.Read moreRead less
Understanding adaptation to improve conservation of Australian flora. Using the Australian flora as our model, this project aims to tackle a central issue of evolution and conservation - what drives species adaptation? Since dispersal should override selection in populations, we predict that plants that are good dispersers will display weak signals of adaptation, but a higher capacity to adapt, than poorer dispersers. From these expectations we plan to develop a new adaptation guild classificati ....Understanding adaptation to improve conservation of Australian flora. Using the Australian flora as our model, this project aims to tackle a central issue of evolution and conservation - what drives species adaptation? Since dispersal should override selection in populations, we predict that plants that are good dispersers will display weak signals of adaptation, but a higher capacity to adapt, than poorer dispersers. From these expectations we plan to develop a new adaptation guild classification, and test predictions using ecological genomics and functional genetics at a continental and multi-species scale. In addition to progressing a central tenet of evolutionary biology, this project aims to improve seed sourcing and biodiversity management, readily applicable to plants that can be quickly classified by life history traits.Read moreRead less
Genomics for persistence of Australian freshwater fish. Biodiversity faces an unpredictable cocktail of impacts and global environmental change, against which the best insurance is genetic diversity. We will develop genomic measures of ecological-genetic functions and evolutionary potential for managing Australian freshwater fish.
Seminal fluid interferon-gamma: a potential inhibitor of reproductive success. This project aims to investigate mechanisms by which infection, heat stress and psycho-social stress interfere with fertility by inducing a signalling factor in seminal fluid that suppresses female immune adaptation for pregnancy. Factors in seminal fluid in addition to sperm parameters are known to affect male reproductive success, but these are not well defined. The cytokine interferon-gamma (IFNG) is variably prese ....Seminal fluid interferon-gamma: a potential inhibitor of reproductive success. This project aims to investigate mechanisms by which infection, heat stress and psycho-social stress interfere with fertility by inducing a signalling factor in seminal fluid that suppresses female immune adaptation for pregnancy. Factors in seminal fluid in addition to sperm parameters are known to affect male reproductive success, but these are not well defined. The cytokine interferon-gamma (IFNG) is variably present in seminal plasma of several mammalian species. It was recently discovered that IFNG interferes with the female immune response required for reproductive success. This project will investigate how seminal fluid IFNG alters female immune adaptation for pregnancy. This will define how environmental factors induce seminal fluid IFNG and determine whether inhibitory effects of IFNG can be overcome with pharmacological inhibitors to boost reproductive success.Read moreRead less
Reconstructing mechanisms of range contraction to avert species extinctions. This project aims to integrate biotic information from fossils and ancient DNA of vertebrates into computational models to establish ecological processes that drive the structure and dynamics of geographical ranges and regulate the severity of species extinction rates from global change. This approach is likely to improve theory on dynamic species borders and expected outcomes include providing a framework for better al ....Reconstructing mechanisms of range contraction to avert species extinctions. This project aims to integrate biotic information from fossils and ancient DNA of vertebrates into computational models to establish ecological processes that drive the structure and dynamics of geographical ranges and regulate the severity of species extinction rates from global change. This approach is likely to improve theory on dynamic species borders and expected outcomes include providing a framework for better allocating resources for endangered species in Australia and beyond. This will have significant benefits, such as providing the first mechanistic explanations for the principal drivers of mega-fauna extinctions during the late Pleistocene and Holocene.Read moreRead less
Reconstructing the impact of climate change on Australian native species. This project will explore the impact of past climate change on Australian native animals to identify species and ecosystems at greatest potential risk, and to help predict and minimise the effects of future change.
Improving prediction of rocky reef ecosystem responses to human impacts. This project aims to improve our understanding of inshore ecosystems to facilitate better management of our living marine heritage. The project first aims to extend field datasets on the density and distribution of thousands of marine fishes, invertebrates and macro-algae. These will then be combined using recent advances in quantitative ecological modelling to describe transfer of biomass between species at hundreds of sit ....Improving prediction of rocky reef ecosystem responses to human impacts. This project aims to improve our understanding of inshore ecosystems to facilitate better management of our living marine heritage. The project first aims to extend field datasets on the density and distribution of thousands of marine fishes, invertebrates and macro-algae. These will then be combined using recent advances in quantitative ecological modelling to describe transfer of biomass between species at hundreds of sites, with a primary focus on southern Australia. It is anticipated that this will provide site-level indices of major food web processes that, when combined with ‘before, after, control, impact’ data, will improve prediction of ecological consequences of fishing, climate change, pest outbreaks and pollution.Read moreRead less
Solving the problems of estimating extinction rates in recent and geological time. Human activity is causing species to go extinct at rates not seen for at least 65 million years: this is the sixth mass extinction event in the history of the Earth. This project will use state-of-the-art modelling tools applied to Australian and global species and land-use change data to quantify humanity's influence on recent and future extinctions.
Long-term changes in the phenology of Australia's temperate marine macroalgae: has climate change impacted the world's most diverse algal flora? Looking back at herbarium specimens collected over the past 100 years, this project will reconstruct a historical baseline of reproduction in Australian seaweeds. This unique opportunity to rigorously assess the extent of recent changes in response to ocean warming, will help secure the continued existence of the most species rich marine flora in the wo ....Long-term changes in the phenology of Australia's temperate marine macroalgae: has climate change impacted the world's most diverse algal flora? Looking back at herbarium specimens collected over the past 100 years, this project will reconstruct a historical baseline of reproduction in Australian seaweeds. This unique opportunity to rigorously assess the extent of recent changes in response to ocean warming, will help secure the continued existence of the most species rich marine flora in the world.Read moreRead less