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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.
Keystone effects of Australia's top predators: dingoes, devils and biodiversity. This project will study the interactions of Australia's two largest predators, the dingo and Tasmanian devil, with other species. The project will help develop an understanding of the value of these predators in maintaining ecosystem processes and diversity, and guide their management in the future.
The contribution of human/marine herbivore interactions to reef degradation. This project aims to define how interactions between human society and herbivores influence marine ecosystem structure and function. It will analyse geographic patterns from recent systematic sampling of reef communities worldwide and study fish, macro-invertebrate and meso-grazer herbivory to identify herbivores’ role in the collapse and recovery of reef ecosystems. This project will examine the match between a critica ....The contribution of human/marine herbivore interactions to reef degradation. This project aims to define how interactions between human society and herbivores influence marine ecosystem structure and function. It will analyse geographic patterns from recent systematic sampling of reef communities worldwide and study fish, macro-invertebrate and meso-grazer herbivory to identify herbivores’ role in the collapse and recovery of reef ecosystems. This project will examine the match between a critical ecosystem function and community structure across local to global scales, including the identification of non-linearities and interactions involving human effects on this process. This research is expected to safeguard marine ecosystems from collapse.Read moreRead less
Transformation of vegetation by big herbivores, from the Pleistocene to now. The project aims to provide a coherent understanding of the effects of extinct and extant large herbivores on ecosystems over space and time. The structure and distribution of vegetation types is determined not only by climate and soils, but also by the impacts of herbivores and fire as consumers of plant biomass. Recent research has shown how fire shapes the large-scale distribution of vegetation types, but we do not h ....Transformation of vegetation by big herbivores, from the Pleistocene to now. The project aims to provide a coherent understanding of the effects of extinct and extant large herbivores on ecosystems over space and time. The structure and distribution of vegetation types is determined not only by climate and soils, but also by the impacts of herbivores and fire as consumers of plant biomass. Recent research has shown how fire shapes the large-scale distribution of vegetation types, but we do not have an equivalent understanding of the effects of large ground-dwelling herbivores. The project plans to test the effects of such animals on vegetation structure in the Pleistocene, when mega-herbivores were common, and today, and thus to compare the impacts of fire and herbivores on the distribution of vegetation types.Read moreRead less
Characteristic length scales of marine systems: Can they be measured and what do they mean? A crucial question in ecology is the ?characteristic? scale or scales at which a system should be observed to most clearly observe its deterministic dynamics. We propose to modify methods recently developed for model ecosystems so they may be applied to real ecosystems, assess the performance of these measures in identifying unambiguous length scales, and ascertain what these scales reveal about the under ....Characteristic length scales of marine systems: Can they be measured and what do they mean? A crucial question in ecology is the ?characteristic? scale or scales at which a system should be observed to most clearly observe its deterministic dynamics. We propose to modify methods recently developed for model ecosystems so they may be applied to real ecosystems, assess the performance of these measures in identifying unambiguous length scales, and ascertain what these scales reveal about the underlying ecology. The work will provide significant advances to important applied scaling questions such as the optimal size of reserves and ecosystem management ?units?, and the appropriate scale of observation to detect deterministic trends in ecosystem dynamics.
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New thinking on the relationship of dingo ecology to biodiversity conservation and sustainable cattle production. This project will provide new understanding of the role of Australia's only native large mammal predator in sustaining biodiversity and ecological function. This will result in improved management of dingoes as a key part of Australian ecosystems. The project will also test the possibility that relaxation of current controls on dingoes could provide net benefits to beef cattle produc ....New thinking on the relationship of dingo ecology to biodiversity conservation and sustainable cattle production. This project will provide new understanding of the role of Australia's only native large mammal predator in sustaining biodiversity and ecological function. This will result in improved management of dingoes as a key part of Australian ecosystems. The project will also test the possibility that relaxation of current controls on dingoes could provide net benefits to beef cattle producers, and thereby improve the viability and sustainability of Australia's cattle-grazing industry.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
Community-level selection: Empirical tests in a microbial system. Given the profile of the question of community-level selection as a long-running controversy, the main benefit of the proposed work, which will critically test the idea in an empirical system, will be to increase recognition of Australia's position as a research nation in evolutionary biology. In exploring mechanisms of floc formation, a key component of wastewater treatment, the work will establish important foundations for impro ....Community-level selection: Empirical tests in a microbial system. Given the profile of the question of community-level selection as a long-running controversy, the main benefit of the proposed work, which will critically test the idea in an empirical system, will be to increase recognition of Australia's position as a research nation in evolutionary biology. In exploring mechanisms of floc formation, a key component of wastewater treatment, the work will establish important foundations for improving the efficiency of wastewater treatment. Improvement in performance of only a few percent will bring important economic savings. This is evidenced by recent commitment of >$US 230 billion to improving the efficiency of wastewater treatment in Germany, Italy and Spain over 5 years.Read moreRead less
Understanding marine migratory connectivity for more sustainable oceans. Ocean basin-scale migrations of iconic sea turtles, marine mammals, seabirds, and fish expose them to multiple stressors and governance regimes, leading to gaps in management and population declines. The project aims to deliver the methods and evidence base of cross-taxa migratory connectivity that is essential to support the
conservation of these species. Expected outcomes include comprehensive and integrated models of mig ....Understanding marine migratory connectivity for more sustainable oceans. Ocean basin-scale migrations of iconic sea turtles, marine mammals, seabirds, and fish expose them to multiple stressors and governance regimes, leading to gaps in management and population declines. The project aims to deliver the methods and evidence base of cross-taxa migratory connectivity that is essential to support the
conservation of these species. Expected outcomes include comprehensive and integrated models of migratory connectivity, conservation theory development, and new methods that allow incorporation of migratory connectivity in conservation planning. Benefits include: a cross-taxa baseline that will enable Australia to measure environmental change in marine migratory connectivity for the first time.Read moreRead less