How does ecological disturbance shape the genetic diversity of natural populations? Environmental disturbances shape the dynamics of the world's ecosystems. However, we do not understand how they influence biodiversity at its most fundamental level, genetic diversity. This is important, because genetic diversity affects the fitness of individuals, the viability of populations and the adaptability of species. This project will study fire in the Australian environment to discover how disturbance a ....How does ecological disturbance shape the genetic diversity of natural populations? Environmental disturbances shape the dynamics of the world's ecosystems. However, we do not understand how they influence biodiversity at its most fundamental level, genetic diversity. This is important, because genetic diversity affects the fitness of individuals, the viability of populations and the adaptability of species. This project will study fire in the Australian environment to discover how disturbance affects genetic diversity. By integrating landscape genomics and computational modelling with long-term field studies, the research will significantly advance our understanding of how genetic diversity is distributed, and improve our ability to predict the responses of natural populations to changes in the frequency and severity of wildfire.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100443
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Landscape genomics to make an endangered community resilient. This project aims to use landscape genomic techniques to assess how key species of the critically endangered Box-Gum Grassy Woodland community migrate and adapt under changing environmental conditions. Changing climate and land use threaten ecological communities, and alter environments at alarming rates. When species are pushed beyond their environmental tolerances, they will migrate, adapt or face local extinction. This alteration o ....Landscape genomics to make an endangered community resilient. This project aims to use landscape genomic techniques to assess how key species of the critically endangered Box-Gum Grassy Woodland community migrate and adapt under changing environmental conditions. Changing climate and land use threaten ecological communities, and alter environments at alarming rates. When species are pushed beyond their environmental tolerances, they will migrate, adapt or face local extinction. This alteration of the community structure affects the stability and function of the ecosystem. Expected outcomes include efficient use of limited conservation resources, ensuring the long term persistence of the endangered community.Read moreRead less
Optimising plant populations for ecological restoration and resilience. When choosing individual plants for restoration populations, there is potentially a trade-off between maximising genetic diversity (‘adaptability’) and selection for desirable properties (‘adaptation’). This project aims to develop pioneering methods to quantify this trade-off, and facilitate the design of optimised populations, with a focus on two Australian rainforest trees that are being impacted by myrtle rust infection: ....Optimising plant populations for ecological restoration and resilience. When choosing individual plants for restoration populations, there is potentially a trade-off between maximising genetic diversity (‘adaptability’) and selection for desirable properties (‘adaptation’). This project aims to develop pioneering methods to quantify this trade-off, and facilitate the design of optimised populations, with a focus on two Australian rainforest trees that are being impacted by myrtle rust infection: Rhodamnia argentea and Rhodamnia rubescens. By studying the genetic variation in each species, and how this relates to myrtle rust resistance and climate, this project aims to design populations that are genetically diverse, maximally resistant to myrtle rust, and adapted to future climate.Read moreRead less
Genomic signatures of adaptive diversification in woodland Eucalyptus. This project aims to map the sources of adaptive alleles underlying diversification is to reveal insights into the mechanisms of speciation. The source of the raw material for evolution can have significant impacts on the speed with which populations can adapt. An emerging pattern in speciation research is the importance of ancient alleles and introgressed genes, which differ in the genomic signatures left by selection. Eucal ....Genomic signatures of adaptive diversification in woodland Eucalyptus. This project aims to map the sources of adaptive alleles underlying diversification is to reveal insights into the mechanisms of speciation. The source of the raw material for evolution can have significant impacts on the speed with which populations can adapt. An emerging pattern in speciation research is the importance of ancient alleles and introgressed genes, which differ in the genomic signatures left by selection. Eucalyptus offers a unique opportunity to explore these modes of evolution using the latest genomic tools. Improving our understanding of adaptation and genetic variation in woodland eucalypts is expected to make a significant contribution to their conservation, management and restoration.Read moreRead less
The evolution and conservation consequences of promiscuity in plants pollinated by vertebrates. Pollen dispersal between plants, predominantly by insects and wind, is characteristically restricted to nearest neighbours. Recent molecular analysis of paternity for a Banksia pollinated by nectar-feeding birds showed atypical pollen dispersal, with high multiple paternity, wide outcrossing and local panmixis. With much of the Australian flora also bird-pollinated, our initial results have potentiall ....The evolution and conservation consequences of promiscuity in plants pollinated by vertebrates. Pollen dispersal between plants, predominantly by insects and wind, is characteristically restricted to nearest neighbours. Recent molecular analysis of paternity for a Banksia pollinated by nectar-feeding birds showed atypical pollen dispersal, with high multiple paternity, wide outcrossing and local panmixis. With much of the Australian flora also bird-pollinated, our initial results have potentially wide and novel significance. This project proposes to test the generality of our observations for other vertebrate-pollinated species, and to test the conservation and evolutionary consequences of reduced pollen dispersal caused by habitat fragmentation and declining pollinators for a pollination paradigm facilitating promiscuity.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180100046
Funder
Australian Research Council
Funding Amount
$365,058.00
Summary
Capturing highly beneficial and persistent legume symbionts. This project aims to investigate impacts of climate change on the survival of symbiotic soil bacteria and the nutritional benefits they provide plants, using molecular technology. This project will generate new knowledge about the process of adaptation in symbiotic bacteria, by measuring genomic changes. Expected outcomes of this project include enhanced capacity to design ecological or genetic manipulations of soil bacteria to augment ....Capturing highly beneficial and persistent legume symbionts. This project aims to investigate impacts of climate change on the survival of symbiotic soil bacteria and the nutritional benefits they provide plants, using molecular technology. This project will generate new knowledge about the process of adaptation in symbiotic bacteria, by measuring genomic changes. Expected outcomes of this project include enhanced capacity to design ecological or genetic manipulations of soil bacteria to augment plant survival and health. Anticipated benefits include enhanced woodland restoration in a biodiversity hotspot, options to mitigate habitat damage from climate change, and strategies to increase agricultural productivity with less fertiliser.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE190100326
Funder
Australian Research Council
Funding Amount
$419,406.00
Summary
Genomics of drought adaptation in endangered Eucalyptus woodlands. This project aims to investigate divergence in drought response strategies among foundation Eucalyptus species, using the latest genomic advances. The project expects to contribute new knowledge of drought adaptation in trees, specifically identifying above and below ground interactions that may constrain evolutionary responses to climate change by assessing genotype-trait associations in an integrated, whole plant research model ....Genomics of drought adaptation in endangered Eucalyptus woodlands. This project aims to investigate divergence in drought response strategies among foundation Eucalyptus species, using the latest genomic advances. The project expects to contribute new knowledge of drought adaptation in trees, specifically identifying above and below ground interactions that may constrain evolutionary responses to climate change by assessing genotype-trait associations in an integrated, whole plant research model. Expected outcomes include enhanced capacity to design agroforestry and restoration breeding programs to increase tree productivity and resilience under increasing aridity. This will benefit the conservation of endangered Australian woodlands, restoration of degraded landscapes, and production forestry.Read moreRead less