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Enhancing nutrient retention in soils through management of microbial biomass. Soil microbial-processes are generally studied in relation to mineralisation of nutrients but rarely for their potential to retain nutrients and reduce nutrient leaching. We hypothesise that management of microbial immobilisation will enhance nutrient retention in nutrient enriched soils during seasonal rains. This hypothesis will be tested under strongly seasonal environments of southwest Australia where nutrient lea ....Enhancing nutrient retention in soils through management of microbial biomass. Soil microbial-processes are generally studied in relation to mineralisation of nutrients but rarely for their potential to retain nutrients and reduce nutrient leaching. We hypothesise that management of microbial immobilisation will enhance nutrient retention in nutrient enriched soils during seasonal rains. This hypothesis will be tested under strongly seasonal environments of southwest Australia where nutrient leaching from soils degrades quality of surface and groundwater. We will first investigate pathways and conditions leading to microbial immobilisation. We will then explore the regulation of substrate and nutrient conditions to promote such retention, and subsequently develop management interventions based on microbially-mediated nutrient retention.Read moreRead less
Why are complex habitats more diverse? This project aims to develop and test theory for the ubiquitous relationship between habitat complexity and biodiversity. Whether in forests, grasslands, kelp forests or coral reefs, habitat complexity is increasingly being flattened by natural and human-based processes. The project will integrate novel three-dimensional habitat models with established ecological theory, and then validate the theory on coral reefs that have undergone disturbances with diffe ....Why are complex habitats more diverse? This project aims to develop and test theory for the ubiquitous relationship between habitat complexity and biodiversity. Whether in forests, grasslands, kelp forests or coral reefs, habitat complexity is increasingly being flattened by natural and human-based processes. The project will integrate novel three-dimensional habitat models with established ecological theory, and then validate the theory on coral reefs that have undergone disturbances with different effects on complexity (cyclones and bleaching). This project will significantly advance the predictive capacity of biodiversity risk assessments of these threatened ecosystems and potentially others worldwide.Read moreRead less
The impact of severe bushfires on the ecology, demography and genetics of frogs in the Victorian Kinglake region. The February 2009 bushfires in Victoria devastated many communities, and also had a profound impact on wildlife species. This research is aimed at measuring the impact of these fires on frogs in the Kinglake region. It will provide a range of national benefits, including a better understanding of the effects of wildfire on native species and their habitats, information to help plan c ....The impact of severe bushfires on the ecology, demography and genetics of frogs in the Victorian Kinglake region. The February 2009 bushfires in Victoria devastated many communities, and also had a profound impact on wildlife species. This research is aimed at measuring the impact of these fires on frogs in the Kinglake region. It will provide a range of national benefits, including a better understanding of the effects of wildfire on native species and their habitats, information to help plan conservation efforts for frogs, and a vital connection with local landowners; some of whom lost their homes in the fires but were still concerned about the wellbeing of frogs in the area. Australia is a fire-prone country, and this project will help develop responses to the threats posed by the expected increase in the frequency and intensity of fires in southern Australia.Read moreRead less
Special Research Initiatives - Grant ID: SR0354582
Funder
Australian Research Council
Funding Amount
$20,000.00
Summary
Australia-NZ Network for Vegetation Function and Futures. Plants shape our landscapes and drive ecosystem processes from local to global scale. Plant species vary widely in quantitative functional traits. Global datasets about functional variation are emerging, with Australian and NZ leadership. A network would be supported in both Australia and NZ and with strong links elsewhere. It would target seven ambitious but achievable research developments. Each of them demands intensive conversation be ....Australia-NZ Network for Vegetation Function and Futures. Plants shape our landscapes and drive ecosystem processes from local to global scale. Plant species vary widely in quantitative functional traits. Global datasets about functional variation are emerging, with Australian and NZ leadership. A network would be supported in both Australia and NZ and with strong links elsewhere. It would target seven ambitious but achievable research developments. Each of them demands intensive conversation between separate disciplines. Networking across all seven strands will create a broader linkage, spanning across palaeobiology, ecosystem function, vegetation structure, global change, ecophysiology, phylogeny, genomics, ecoinformatics and evolutionary theory.Read moreRead less
The origins of electroreception and nocturnality in the earliest known jawed vertebrates and their bearing on vertebrate diversification. This project aims to discover primary new data to pinpoint the timing, anatomical origins and phylogenetic significance when two key sensory systems first appeared in modern vertebrates: electroreception and specialised nocturnal vision. Such abilities today allow high diversity of vertebrates to co-exist within the same geographical range, for example on trop ....The origins of electroreception and nocturnality in the earliest known jawed vertebrates and their bearing on vertebrate diversification. This project aims to discover primary new data to pinpoint the timing, anatomical origins and phylogenetic significance when two key sensory systems first appeared in modern vertebrates: electroreception and specialised nocturnal vision. Such abilities today allow high diversity of vertebrates to co-exist within the same geographical range, for example on tropical reefs or rainforest communities, through careful temporal niche partitioning where reliance on other sensory systems takes over from vision and olfaction as the principal method of prey detection. This project aims to elucidate how the modern fish diversity was shaped by such significant early evolutionary events.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140101281
Funder
Australian Research Council
Funding Amount
$384,589.00
Summary
Mechanisms influencing the evolutionary trajectories of extended phenotypes. Although we know how the environment and predator-prey interactions shape traits, we have a poor grasp of the evolution of extended phenotypes. The webs of spiders have switched repeatedly between two- and three-dimensional forms over time, so are excellent models for assessing extended phenotype evolution. This project will use innovative experiments to assess whether the prey capture performance of webs or their visib ....Mechanisms influencing the evolutionary trajectories of extended phenotypes. Although we know how the environment and predator-prey interactions shape traits, we have a poor grasp of the evolution of extended phenotypes. The webs of spiders have switched repeatedly between two- and three-dimensional forms over time, so are excellent models for assessing extended phenotype evolution. This project will use innovative experiments to assess whether the prey capture performance of webs or their visibility to insects drove the repeated This project will provide insights into the interactive roles of the environment and prey in shaping extended phenotype diversification. Read moreRead less
ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ....ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ecoinformatics and evolutionary theory. Across this span, working groups will target nine identified opportunities for breakthrough research. Each research target needs input from two or more disciplines. Together, the nine targets link across disciplines, as a network that spans from genomic to planetary scales.Read moreRead less
Impacts of changing detrital source biodiversity on estuarine ecosystems. Coastal development, invasive pests, and climate change are impacting abundances of estuarine aquatic plants. This in turn is affecting the composition and magnitude of detrital enrichment, threatening biodiversity, fisheries production and endangered birds. Our pioneering research will forecast the impacts of changing detrital-source biodiversity on soft-sediment communities and the food webs they support in Australia and ....Impacts of changing detrital source biodiversity on estuarine ecosystems. Coastal development, invasive pests, and climate change are impacting abundances of estuarine aquatic plants. This in turn is affecting the composition and magnitude of detrital enrichment, threatening biodiversity, fisheries production and endangered birds. Our pioneering research will forecast the impacts of changing detrital-source biodiversity on soft-sediment communities and the food webs they support in Australia and the USA. Ecological generalities obtained can be used to support policy development that ensures sustainable management of estuaries. This work will also facilitate training of early career researchers and focus research efforts of leading US researchers towards issues crucial for Australian estuarine management.Read moreRead less
A novel approach to tracking estuarine food chains: combined use of fatty acid and stable isotope biomarkers. Fatty acid biomarkers provide promising novel tracers for studying estuarine food chains. Stable isotopes, commonly employed in food chain studies, lack specificity to allow easy determination of feeding relationships. Different primary producers are characterised by unique fatty acid sequences. This study will thoroughly evaluate the applicability of fatty acid biomarkers in tracking ....A novel approach to tracking estuarine food chains: combined use of fatty acid and stable isotope biomarkers. Fatty acid biomarkers provide promising novel tracers for studying estuarine food chains. Stable isotopes, commonly employed in food chain studies, lack specificity to allow easy determination of feeding relationships. Different primary producers are characterised by unique fatty acid sequences. This study will thoroughly evaluate the applicability of fatty acid biomarkers in tracking both natural and human-impacted estuarine food chains. By developing a new approach of combining the advantages of fatty acid bioamrkers and stable isotopes in studying estuarine trophodynamics, this study will provide essential information for the management of estuarine biotic resources.Read moreRead less
Heterogeneity and ecosystem function: The role of microphytobenthos and macrofauna in inducing spatial variability in biogeochemical processes and fluxes. Human disturbances such as eutrophication (nutrient enrichment) increasingly threaten the sustainable use of Australia's coastal seas. Management of threats such as eutrophication are usually based on observations at large spatial scales, but ecological processes underpinning nutrient dynamics occur at much smaller scales. This multi-disciplin ....Heterogeneity and ecosystem function: The role of microphytobenthos and macrofauna in inducing spatial variability in biogeochemical processes and fluxes. Human disturbances such as eutrophication (nutrient enrichment) increasingly threaten the sustainable use of Australia's coastal seas. Management of threats such as eutrophication are usually based on observations at large spatial scales, but ecological processes underpinning nutrient dynamics occur at much smaller scales. This multi-disciplinary study will examine the relationship between processes mediated by small organisms (microscopic algae and burrowing animals), and large-scale nutrient dynamics pattern on sheltered coasts. Modern technologies will be used for monitoring the micro-scale processes, allowing models to be constructed to benefit both scientists and policy-makers alike.Read moreRead less