Maternal effects and sex allocation: an integrated approach. This project will produce research of a high international standard combining a number of key fields in evolution and ecology. The team we have assembled provides a link between Australian-based researchers and leading overseas theoreticians facilitating integration between evolutionary theory and empirical research on the unique Australian fauna. Furthermore, while climate change is identified as a priority area for research, Australi ....Maternal effects and sex allocation: an integrated approach. This project will produce research of a high international standard combining a number of key fields in evolution and ecology. The team we have assembled provides a link between Australian-based researchers and leading overseas theoreticians facilitating integration between evolutionary theory and empirical research on the unique Australian fauna. Furthermore, while climate change is identified as a priority area for research, Australia typically lacks the history of long-term phenological monitoring that is required to understand climate change impacts. This project takes an important step towards addressing this shortcoming.Read moreRead less
Big squids in Australian waters, insights into their biology, movement and activity, old questions - new technology. This project will assess important biological parameters of shelf and slope ommastrephid squids. Lab based studies will explore age, growth, maturity rates and diet for the deepwater squid Todarodes filippovae. Cutting -edge telemetry technology (manual tracking, listening curtains and satellite pop-up tags) will assess movement, activity, metabolism and vertical migration of bo ....Big squids in Australian waters, insights into their biology, movement and activity, old questions - new technology. This project will assess important biological parameters of shelf and slope ommastrephid squids. Lab based studies will explore age, growth, maturity rates and diet for the deepwater squid Todarodes filippovae. Cutting -edge telemetry technology (manual tracking, listening curtains and satellite pop-up tags) will assess movement, activity, metabolism and vertical migration of both T. filippovae in deep water and arrow squid (Nototodarus gouldi) on the shelf. A comprehensive understanding will be gained of the biology and lifestyle of these two key squid species that will be utilised by implementers of the South-east Regional Marine Plan, ecosystem modelers and resource managers.Read moreRead less
Molecular aggression: variation and heritability of the levels of reactive oxygen species, and their effects on the evolution of life histories in the wild. Three areas of biology have intrigued every generation since Aristotle (c. 300 BC)- sex, embryology, and ageing. This proposal targets all three of these areas with a special focus on aspects of ageing. In particular, we assess how 'free radicals', so often identified in our food and wine for good and bad, exert selection on living organisms ....Molecular aggression: variation and heritability of the levels of reactive oxygen species, and their effects on the evolution of life histories in the wild. Three areas of biology have intrigued every generation since Aristotle (c. 300 BC)- sex, embryology, and ageing. This proposal targets all three of these areas with a special focus on aspects of ageing. In particular, we assess how 'free radicals', so often identified in our food and wine for good and bad, exert selection on living organisms and whether resistance (and defense) towards free radicals may drive evolution of ageing in the wild, its trade offs with fertility and fecundity, and how it is influenced by sexual or non-sexual reproduction. In spite of excellent work in the laboratory, this is the first attempt to do this in 'the real world' and will extend Australia's excellent reputation in evolutionary biology.Read moreRead less
Flexibility in the timing of parturition: the key to viviparity in lizards? Embryos of viviparous lizards usually gain adequate nutrients from yolk. Why then has placentotrophy evolved in some species, and what new opportunities has it opened up? The answer may lie in the advantages gained from flexibility in the timing of birth, made possible by supplementary transfer of storage lipids to embryos during gestation. We argue that this provides a pivotal opportunity for evolutionary divergence: so ....Flexibility in the timing of parturition: the key to viviparity in lizards? Embryos of viviparous lizards usually gain adequate nutrients from yolk. Why then has placentotrophy evolved in some species, and what new opportunities has it opened up? The answer may lie in the advantages gained from flexibility in the timing of birth, made possible by supplementary transfer of storage lipids to embryos during gestation. We argue that this provides a pivotal opportunity for evolutionary divergence: some alpine species exploit flexible parturition; other species replace optional placentotrophy with obligate transfer. Our unique experimental approach, using two well-researched clades of viviparous skinks, will result in new testable hypotheses about the evolution of viviparity.Read moreRead less
Landscape-scale population dynamics of open forests in the Australian monsoon tropics. Over the last century there has been a trend of increasing tree cover in many landscapes. Yet the causes of this globally important ecological phenomenon are poorly understood, but may include the effects of climate, fire, grazing and CO2. We will determine how an area of forest has changed over 50 years in Kakadu National Park, linking forest demography with remote sensing techniques, re-measurement and analy ....Landscape-scale population dynamics of open forests in the Australian monsoon tropics. Over the last century there has been a trend of increasing tree cover in many landscapes. Yet the causes of this globally important ecological phenomenon are poorly understood, but may include the effects of climate, fire, grazing and CO2. We will determine how an area of forest has changed over 50 years in Kakadu National Park, linking forest demography with remote sensing techniques, re-measurement and analysis of long-term tree demography datasets, and simulation models of tree population dynamics on a landscape scale. This will provide a scientific framework to develop sustainable land management and the conservation of Australia's forest biodiversity.Read moreRead less
Effects of maternal foraging success and oceanographic variation on offspring behaviour and survival in the southern elephant seal. Juvenile survival is the key determinant of mammalian population performance, but the proximate determinants of this have rarely been established in large, long-lived predators. Southern elephant seals, with their concentrated lactation effort and marked separation of energy acquisition (at-sea foraging) and expenditure (on-land lactation) provide an ideal model for ....Effects of maternal foraging success and oceanographic variation on offspring behaviour and survival in the southern elephant seal. Juvenile survival is the key determinant of mammalian population performance, but the proximate determinants of this have rarely been established in large, long-lived predators. Southern elephant seals, with their concentrated lactation effort and marked separation of energy acquisition (at-sea foraging) and expenditure (on-land lactation) provide an ideal model for investigating these factors. In this study, we investigate the partitioning of pre-partum performance (fat acquired in mothers) relative to spatial-temporal variation in ocean productivity and the effect of this expenditure on offspring condition and survival. Here, the final missing link of energy transfer and its effects on offspring will be a major outcome of this project.Read moreRead less
Dynamic resilience and stability properties of marine systems: the importance of environment-engineer feedbacks in kelp forests. Kelp forests form complex habitats that support diverse, productive and economically important food-webs. This project will determine whether healthy kelp forests engineer their environment to make conditions more suitable for their continued recruitment and survivorship, thus increasing their stability and resilience in response to anthropogenic threats.
From genes to ecosystems: does genetic divergence in eucalyptus alter biodiversity and ecosystem function? The project will use a dominant tree species of south-eastern Australia to examine how genetic based variation in its traits influences community organisation, biodiversity and ecosystem processes. Outcomes from this research will be important for responding to an uncertain future environment and maintaining the services ecosystems provide.
Inbreeding and Amphibian Decline: from an Individual to a Global Perspective. Amphibian decline is not a phenomenon unique to overseas continents and countries. In the long line of research papers addressing this issue in the best science journals (e.g., Nature and Science), Australian frog decline has even been singled out for specific coverage. This project targets the interplay between habitat fragmentation, loss of genetic variation (inbreeding), and its effects on UV and pathogen resistance ....Inbreeding and Amphibian Decline: from an Individual to a Global Perspective. Amphibian decline is not a phenomenon unique to overseas continents and countries. In the long line of research papers addressing this issue in the best science journals (e.g., Nature and Science), Australian frog decline has even been singled out for specific coverage. This project targets the interplay between habitat fragmentation, loss of genetic variation (inbreeding), and its effects on UV and pathogen resistance in a laboratory model system. It integrates three disciplines (immunobiology, evolutionary genetics, and conservation biology) to resolve fundamental aspects of the drastic, ongoing disappearance of the most significant ecological indicator taxa known today (amphibians). Read moreRead less
Detecting and deciphering extinction dynamics under environmental change. This project aims to improve knowledge of extinction processes and impacts. It will use high-performance computing and museum collections to disentangle the ecological mechanisms that were integral in the initial decline and later extinction of Australia's unique mammals. Its significance is that it will establish the historical ranges and past population trajectories of Australian threatened mammals, pinpointing the combi ....Detecting and deciphering extinction dynamics under environmental change. This project aims to improve knowledge of extinction processes and impacts. It will use high-performance computing and museum collections to disentangle the ecological mechanisms that were integral in the initial decline and later extinction of Australia's unique mammals. Its significance is that it will establish the historical ranges and past population trajectories of Australian threatened mammals, pinpointing the combinations of ecological characteristics and threats that most affect risk of extinction from environmental change. Expected outcomes and benefits are new data and verified models to enrich conservation research and inform evidence-based solutions to better protect and recover some of Australia’s most threatened species.Read moreRead less