How isolated is Antarctica? Assessing past and present plant colonisations. The project aims to assess how biologically isolated Antarctica is by discovering how, when and where natural colonisations of the continent have occurred. The research will focus on mosses, the dominant plant group in the Antarctic. genomic tools will be combined with environmental, spatial, and ecological data to assess mechanisms and directions of dispersal to and around Antarctica, and to predict areas most likely to ....How isolated is Antarctica? Assessing past and present plant colonisations. The project aims to assess how biologically isolated Antarctica is by discovering how, when and where natural colonisations of the continent have occurred. The research will focus on mosses, the dominant plant group in the Antarctic. genomic tools will be combined with environmental, spatial, and ecological data to assess mechanisms and directions of dispersal to and around Antarctica, and to predict areas most likely to be colonised in the future. This will help understand the processes underpinning the evolution and diversity of Antarctic species, and the vulnerability and adaptability of Antarctic ecosystems. Read moreRead less
Evolution of Australia's globally unique hotspot of floral diversity. Australia has a globally recognised biodiversity hotspot, the southwest of Western Australia, but this unique eucalypt-dominated flora is threatened. This project will gain new insights into the evolutionary processes that generate and maintain such diversity, their vulnerability; and how the iconic eucalypts came to dominate the Australian landscape.
Australia's Distinctive Succulent Flora. The project plans to investigate why Australia, the driest vegetated continent, has no landscape dominated by large succulents but nevertheless supports a distinctive, diverse and widespread succulent flora. Focusing on terrestrial succulents and epiphytic orchids, the project plans to explore the evolution, assembly and biodiversity of Australia’s succulent flora, evaluating the roles of genetic composition, photosynthetic physiology, aridity, fire, soil ....Australia's Distinctive Succulent Flora. The project plans to investigate why Australia, the driest vegetated continent, has no landscape dominated by large succulents but nevertheless supports a distinctive, diverse and widespread succulent flora. Focusing on terrestrial succulents and epiphytic orchids, the project plans to explore the evolution, assembly and biodiversity of Australia’s succulent flora, evaluating the roles of genetic composition, photosynthetic physiology, aridity, fire, soil nutrients and salinity in its historical expansion, and assessing the resilience of the assemblages to changing climate. Of particular interest will be how the most water-use efficient type of photosynthesis, crassulacean acid metabolism, is expressed across the succulent landscape.Read moreRead less
Using genetics to reconstruct the peopling and diversification of Sahul. A recent landmark study has revealed that people who first arrived on Sahul (the landmass connecting Australia with New Guinea) remained largely genetically isolated from subsequent migrations. However, there is still little known about the route(s) taken into Sahul, or how adaptation has shaped the enormous diversity now observed across Indigenous Australians and Papuans. This project aims to look at these issues by applyi ....Using genetics to reconstruct the peopling and diversification of Sahul. A recent landmark study has revealed that people who first arrived on Sahul (the landmass connecting Australia with New Guinea) remained largely genetically isolated from subsequent migrations. However, there is still little known about the route(s) taken into Sahul, or how adaptation has shaped the enormous diversity now observed across Indigenous Australians and Papuans. This project aims to look at these issues by applying phylogenetic and population genetic tools to the largest genetic dataset yet analysed from populations across Australia, New Guinea, and Island South East Asia. The outcomes of the project should reveal both the route(s) taken into Sahul and how adaptation has shaped the diversity now observed in descendants of the colonisation.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140101675
Funder
Australian Research Council
Funding Amount
$395,220.00
Summary
Integrating Evolutionary History into Ecological Modeling. Ecological niche models are used across evolution, ecology and conservation to estimate species' environmental tolerances. However, these methods suffer from a near-universal assumption that may be flawed; that the species is the appropriate evolutionary grouping for study. This project will develop methods for using evolutionary information to improve estimates of species' environmental tolerances, and will demonstrate those methods in ....Integrating Evolutionary History into Ecological Modeling. Ecological niche models are used across evolution, ecology and conservation to estimate species' environmental tolerances. However, these methods suffer from a near-universal assumption that may be flawed; that the species is the appropriate evolutionary grouping for study. This project will develop methods for using evolutionary information to improve estimates of species' environmental tolerances, and will demonstrate those methods in simulation and empirical studies. This will significantly improve our understanding of evolutionary ecology and will also result in improved conservation outcomes, addressing the national priority of an environmentally sustainable Australia and the goal of responding to environmental change and variability.Read moreRead less
Tracking the development of agricultural lifestyles in island Southeast Asia through modern and prehistoric rodent communities. The emergence of agriculture, a key transformational event in human history, seems to have occurred significantly later in island SE Asia than surrounding regions. However, the early stages of agriculture may be archaeologically ‘invisible’ in the tropics due to simple material culture and housing. This project proposes to use the recent evolutionary history of agricult ....Tracking the development of agricultural lifestyles in island Southeast Asia through modern and prehistoric rodent communities. The emergence of agriculture, a key transformational event in human history, seems to have occurred significantly later in island SE Asia than surrounding regions. However, the early stages of agriculture may be archaeologically ‘invisible’ in the tropics due to simple material culture and housing. This project proposes to use the recent evolutionary history of agricultural rodent pests, all of which emerged in situ from among a native rodent fauna, as a proxy for the origins and spread of agriculture, and its subsequent intensification. This project will use phylogeography and population genetics to infer the history of contemporary rodent populations, combined with archaeozoological and ancient DNA analyses of prehistoric samples to test our inferences.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE160100035
Funder
Australian Research Council
Funding Amount
$374,000.00
Summary
Why are biodiversity hotspots found where they are? This project aims to develop a method to study how evolution within species shapes the broad-scale distribution of unique biological diversity across landscapes and continents. The distribution of biological diversity is strikingly uneven, with much diversity found only in small ‘hotspots’. What factors determine the locations of these hotspots of endemism? This project aims to answer this question by using three biologically diverse areas as t ....Why are biodiversity hotspots found where they are? This project aims to develop a method to study how evolution within species shapes the broad-scale distribution of unique biological diversity across landscapes and continents. The distribution of biological diversity is strikingly uneven, with much diversity found only in small ‘hotspots’. What factors determine the locations of these hotspots of endemism? This project aims to answer this question by using three biologically diverse areas as test cases. It plans to use a new model to simulate processes of evolution over time, including range shifts, niche evolution, isolation and extinction, to determine how dynamics of divergence evolving within species contribute to broad-scale patterns of diversity. The project intends to improve understanding and management of biodiversity.Read moreRead less
Peripheral isolates as hotbeds of adaptive diversity. This project uses cutting edge molecular technology and spatial analyses to predict the location of diversity relevant to managing the impact of climate change. Knowledge generated in this project will open the door to the informed use of genetic translocation in efforts to kerb expected biodiversity losses.
Discovery Early Career Researcher Award - Grant ID: DE150101773
Funder
Australian Research Council
Funding Amount
$369,536.00
Summary
Bayesian Hierarchical Model for Biogeography. Species Distribution Models (SDMs) are crucial tools for conservation and planning, but they assume that environmental variables (e.g. temperature) are the only controls on distributions, when historical factors, like dispersal limitation and phylogenetic niche conservatism, are also important. A Bayesian Hierarchical Model (BHM) will be constructed to jointly estimate dispersal history, niche evolution, and present-day SDMs for each species in a cla ....Bayesian Hierarchical Model for Biogeography. Species Distribution Models (SDMs) are crucial tools for conservation and planning, but they assume that environmental variables (e.g. temperature) are the only controls on distributions, when historical factors, like dispersal limitation and phylogenetic niche conservatism, are also important. A Bayesian Hierarchical Model (BHM) will be constructed to jointly estimate dispersal history, niche evolution, and present-day SDMs for each species in a clade. BHMs will be tested against traditional SDMs using Australian clades (e.g. frogs) and simulations. BHMs will advance scientific understanding of how species and biogeography coevolve and provide practical improvements in predictions for species that are rare, data-poor, or in changed climates.Read moreRead less