Were the Tertiary radiations of the Australian flora synchronous? A molecular phylogenetic approach. The fossil record shows that in a short period from about 20 Mya, the ancestral Gondwanan rainforest gave way to the unique Australian ?sclerophyll? flora dominated by eucalypts, acacias and casuarinas. This coincided with a drying climate and the advent of fire. It is hypothesized that ?explosive? evolutionary radiations rapidly increased the number of sclerophyll species, rather than a mere r ....Were the Tertiary radiations of the Australian flora synchronous? A molecular phylogenetic approach. The fossil record shows that in a short period from about 20 Mya, the ancestral Gondwanan rainforest gave way to the unique Australian ?sclerophyll? flora dominated by eucalypts, acacias and casuarinas. This coincided with a drying climate and the advent of fire. It is hypothesized that ?explosive? evolutionary radiations rapidly increased the number of sclerophyll species, rather than a mere range expansion of pre-existing species. In a novel approach, molecular phylogenies of several distantly related plant groups will be used to test whether explosive evolutionary radiations took place simultaneously and to identify the environmental triggers.Read moreRead less
Uncovering the evolutionary history of Australasian marsupials: combining molecular phylogenetics and ecological inference. Marsupials are symbolic of the uniqueness of Australia's biological systems and there is widespread public interest in their natural history. Yet we know little of the evolutionary mechanisms that have shaped their biodiversity. This is a critical problem when considered in the context of Australian marsupials having suffered the highest extinction rate of any continental m ....Uncovering the evolutionary history of Australasian marsupials: combining molecular phylogenetics and ecological inference. Marsupials are symbolic of the uniqueness of Australia's biological systems and there is widespread public interest in their natural history. Yet we know little of the evolutionary mechanisms that have shaped their biodiversity. This is a critical problem when considered in the context of Australian marsupials having suffered the highest extinction rate of any continental mammal fauna over the past 200 years. This project will make a major contribution to understanding the origins, timescale and ecological nature of Australasian marsupial evolution. In doing so, it will inform conservation strategy, promote Australasian marsupials as a model system for studying faunal coevolution and develop widely applicable bioinformatic tools.Read moreRead less
Understanding “reinforcement”, an evolutionary process that can lead to the origin of new species and generate species diversity. Understanding how species are formed is of broad significance. National benefit will come from internationally competitive research and collaborations with leading international researchers. Benefits will also come under the ARC Priority Goals of 'An Environmentally Sustainable Australia' as I will (i) provide genetic data that will be invaluable for the conservation ....Understanding “reinforcement”, an evolutionary process that can lead to the origin of new species and generate species diversity. Understanding how species are formed is of broad significance. National benefit will come from internationally competitive research and collaborations with leading international researchers. Benefits will also come under the ARC Priority Goals of 'An Environmentally Sustainable Australia' as I will (i) provide genetic data that will be invaluable for the conservation of a highly threatened species, (ii) determine the importance of contact zones for generating new species and maintaining the evolutionary potential of regions, and (iii) address the role of climate change in shaping diversity over recent evolutionary time, an understanding of which is essential for predicting the impact of future change. Read moreRead less
Molecular Phylogenetics of Australian Myobatrachid Frogs and the Evolution of Reproductive Strategies. The Family Myobatrachidae (22 genera, 120+ species) is wholly endemic to the Australo-Papuan region, represents 57% of the Australian frog fauna and displays more diversity in reproductive strategies than any other group of frogs. We will recover a robust molecular phylogeny for all species in this family and use it to exploit existing ecological and behavioural data sets to provide powerful te ....Molecular Phylogenetics of Australian Myobatrachid Frogs and the Evolution of Reproductive Strategies. The Family Myobatrachidae (22 genera, 120+ species) is wholly endemic to the Australo-Papuan region, represents 57% of the Australian frog fauna and displays more diversity in reproductive strategies than any other group of frogs. We will recover a robust molecular phylogeny for all species in this family and use it to exploit existing ecological and behavioural data sets to provide powerful tests of alternative hypotheses concerning the evolution of diverse reproductive strategies. This multi-disciplinary research project will provide detailed phylogenetic information for one of the most diverse vertebrate radiations in Australia and address important questions in historical ecology.Read moreRead less
Diversity out of a hybrid zone: the interplay of reinforcement and sexual selection in the formation of new species. How are there so many different species? Understanding how new species arise is a fundamental question because it explains current biodiversity and reveals the processes that will continue to give rise to new species in the future. An integral part of any animal species is who they choose to mate with, but how mate choice evolves to create new species remains poorly understood. He ....Diversity out of a hybrid zone: the interplay of reinforcement and sexual selection in the formation of new species. How are there so many different species? Understanding how new species arise is a fundamental question because it explains current biodiversity and reveals the processes that will continue to give rise to new species in the future. An integral part of any animal species is who they choose to mate with, but how mate choice evolves to create new species remains poorly understood. Here I will be studying the processes that affect the evolution of mate choice in an Australian rainforest frog hybrid zone. This system is uniquely suitable for providing internationally important insights into the evolutionary processes that form new species.Read moreRead less
Food and sex: ecological and sexual roles of a functional ornament, the red bill of the sooty oystercatcher. Little is understood about the significance of ornaments in species where both sexes are equally ornamented. Using sooty oystercatchers as a model, in a novel integrative approach I will investigate the role of their bright red bill as a signal of mate qualities, as well as the consequences of sex differences in bill and diet. Although sexual diet specialisation is common, few studies hav ....Food and sex: ecological and sexual roles of a functional ornament, the red bill of the sooty oystercatcher. Little is understood about the significance of ornaments in species where both sexes are equally ornamented. Using sooty oystercatchers as a model, in a novel integrative approach I will investigate the role of their bright red bill as a signal of mate qualities, as well as the consequences of sex differences in bill and diet. Although sexual diet specialisation is common, few studies have examined its function. Sooty oystercatchers are one of only seven waders to breed in Australia and one of our most visible coastal birds. Since their life history is largely unknown, aside from the academic benefits, this project will also yield valuable information on breeding and foraging requirements of this locally common but declining species.Read moreRead less
Tolerance of temperature extremes under drought: linking physiological processes with morphological constraints on leaf function. Freezing temperatures affect over 70% of Australia. Each year frosts cause substantial damage to agriculture and forestry. We will examine how decrease in hydraulic conduit diameter increases freeze tolerance in native woody species and quantify impacts of this tolerance on productivity of leaves. The results have application in managing temperate woody vegetation un ....Tolerance of temperature extremes under drought: linking physiological processes with morphological constraints on leaf function. Freezing temperatures affect over 70% of Australia. Each year frosts cause substantial damage to agriculture and forestry. We will examine how decrease in hydraulic conduit diameter increases freeze tolerance in native woody species and quantify impacts of this tolerance on productivity of leaves. The results have application in managing temperate woody vegetation under current and future climate scenarios. By improving understanding of the behaviour of water in leaves during freezing, we will contribute to improved models of physical stresses and strains in biological tissues during freezing, which find application in cryo-storage of biological materials important in agriculture, medicine, and conservation.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989589
Funder
Australian Research Council
Funding Amount
$550,000.00
Summary
A massively parallel genome analysis facility for the ACT region. Maintaining a healthy environment, supporting a sustainable agriculture industry and providing excellent healthcare are three key requirements for the future of Australia and Australians. Modern biological research has a major role to play in all three areas. The success and application of this research requires a serious investment in the new technologies that enable a systems-wide high throughput approach to biological questions ....A massively parallel genome analysis facility for the ACT region. Maintaining a healthy environment, supporting a sustainable agriculture industry and providing excellent healthcare are three key requirements for the future of Australia and Australians. Modern biological research has a major role to play in all three areas. The success and application of this research requires a serious investment in the new technologies that enable a systems-wide high throughput approach to biological questions. Co-investing in a massively parallel genome analysis facility to underpin cutting edge environmental, agricultural and biomedical research in the ACT region, will facilitate progress in areas of the utmost importance to the community and future of the nation.Read moreRead less