Why conserve genetic variation? Is this misdirected effort or a crucial concern? In attempting to conserve populations of threatened plants, ecosystem managers must prioritise allocation of resources to both immediate and long-term threats, including loss of genetic variation. This study will determine the importance of maintaining existing genetic variation within populations of several species in a major Australian plant group. As well as advancing theory in the area of plant ecological genet ....Why conserve genetic variation? Is this misdirected effort or a crucial concern? In attempting to conserve populations of threatened plants, ecosystem managers must prioritise allocation of resources to both immediate and long-term threats, including loss of genetic variation. This study will determine the importance of maintaining existing genetic variation within populations of several species in a major Australian plant group. As well as advancing theory in the area of plant ecological genetics and evolutionary biology, our results will provide a stronger scientific basis for the development of conservation policy and management decisions for conserving threatened plant species. Read moreRead less
Fire, bees and other disturbances: the basis for variation in genetic diversity in long-lived plants. An understanding of processes generating temporal and spatial patterns of genetic diversity in perennial plants must underpin successful conservation. Our long-term study will exploit systems in the family Proteaceae in which we have completed foundation studies. We will develop and extend molecular techniques to measure (i) genetic changes from seed to adult, (ii) gene flow by different pollina ....Fire, bees and other disturbances: the basis for variation in genetic diversity in long-lived plants. An understanding of processes generating temporal and spatial patterns of genetic diversity in perennial plants must underpin successful conservation. Our long-term study will exploit systems in the family Proteaceae in which we have completed foundation studies. We will develop and extend molecular techniques to measure (i) genetic changes from seed to adult, (ii) gene flow by different pollinator classes, and (iii) genetic contamination by foreign gene pools, in systems affected by introduced pollinators and natural and cultivar hybridization. Most importantly, we will use fire as an accelerant of generational change and test fitness consequences of changes in genotypic diversity.Read moreRead less
Conjugate natural convection boundary layers. Conjugate natural convection systems occur when a conducting vertical wall separates fluids at different temperatures (that is at a window separating the interior of a room from the outside or when a container of fluid is placed in a refrigerator). This project will provide accurate predictions of such flows together with scaling relations.
Enhancing passive cooling using flexible baffles. The project aims to develop a novel passive strategy using fluid-structure-thermal interactions to enhance passive cooling by natural convection and improve the energy efficiency of engineering systems. Comparing to the existing strategies, the new strategy does not require driving fan or pump and is quiet, reliable, self-adaptive and economical. The Multiphysics embodied in the proposal is at the leading edge of the field. Expected outcomes incl ....Enhancing passive cooling using flexible baffles. The project aims to develop a novel passive strategy using fluid-structure-thermal interactions to enhance passive cooling by natural convection and improve the energy efficiency of engineering systems. Comparing to the existing strategies, the new strategy does not require driving fan or pump and is quiet, reliable, self-adaptive and economical. The Multiphysics embodied in the proposal is at the leading edge of the field. Expected outcomes include advanced understanding of the complex Multiphysics and design rules for enhancing passive cooling by natural convection using flexible baffles. The research is expected to bring direct economic benefit to relevant industry and significant environmental and social benefit to the general public.Read moreRead less
A new phylogenetic framework for estimating local, regional, and global biodiversity. Australia is one of the 12 megadiverse countries that together account for 75% of global biodiversity. Invertebrates comprise the single largest component of biodiversity. The Australian invertebrate fauna is poorly known and therefore most conservation planning takes place in the absence of knowledge about the group that contributes most to biodiversity. This project will provide novel methods for estimating i ....A new phylogenetic framework for estimating local, regional, and global biodiversity. Australia is one of the 12 megadiverse countries that together account for 75% of global biodiversity. Invertebrates comprise the single largest component of biodiversity. The Australian invertebrate fauna is poorly known and therefore most conservation planning takes place in the absence of knowledge about the group that contributes most to biodiversity. This project will provide novel methods for estimating invertebrate species richness for conservation planning as well as contributing to the important debate about the magnitude and distribution of global biodiversity.Read moreRead less
Refining Restoration Ecology: Is Range of Historical Variability an appropriate concept to guide ecosystem management and restoration? Ecosystem restoration is an urgent task in many Australian landscapes. Range of Historical Variability (RHV) theory provides an influential but largely untested framework to guide restoration activities. We will test the RHV proposition that biodiversity conservation is enhanced if the structure of altered ecosystems is restored within the pre-settlement range. P ....Refining Restoration Ecology: Is Range of Historical Variability an appropriate concept to guide ecosystem management and restoration? Ecosystem restoration is an urgent task in many Australian landscapes. Range of Historical Variability (RHV) theory provides an influential but largely untested framework to guide restoration activities. We will test the RHV proposition that biodiversity conservation is enhanced if the structure of altered ecosystems is restored within the pre-settlement range. Plants, vertebrates and invertebrates will be compared between ?unrestored? Callitris woodlands dominated by post-settlement regrowth, and ?restored? stands where regrowth has been reduced within the RHV. This will be the first test of RHV theory to encompass a range of taxonomic and functional groups at both local and landscape scales.Read moreRead less
Large Scale Natural Convection Boundary Layers with Non-Boussinesq Effects. This proposal aims to understand and predict heat transfer by turbulent natural convection in two scenarios, firstly at very large environmental scales, such as occur on melting Antarctic ice sheets, and secondly convection involving very large temperature differences such as occur in solar thermal power plants and industrial processes. These natural convection flow regimes are incredibly difficult to investigate directl ....Large Scale Natural Convection Boundary Layers with Non-Boussinesq Effects. This proposal aims to understand and predict heat transfer by turbulent natural convection in two scenarios, firstly at very large environmental scales, such as occur on melting Antarctic ice sheets, and secondly convection involving very large temperature differences such as occur in solar thermal power plants and industrial processes. These natural convection flow regimes are incredibly difficult to investigate directly but by focusing on the fundamental dynamics of the turbulent flows using large scale numerical simulations and innovative experiments, the project is expected to develop better analytical and computational models which will underpin improvements in
global ocean models and improve energy efficiency.Read moreRead less
Reducing the energy consumed by lighting with gaze-dependent illumination. Lighting consumes approximately 18% of electricity, but only a fraction of the light emitted into buildings actually supports occupants’ vision – the rest is wasted. This research aims to reduce the energy consumed by lighting by developing strategies for illuminating only the portions of architectural environments that are visible to occupants, thereby reducing unnecessary light. The impacts of gaze-dependent lighting on ....Reducing the energy consumed by lighting with gaze-dependent illumination. Lighting consumes approximately 18% of electricity, but only a fraction of the light emitted into buildings actually supports occupants’ vision – the rest is wasted. This research aims to reduce the energy consumed by lighting by developing strategies for illuminating only the portions of architectural environments that are visible to occupants, thereby reducing unnecessary light. The impacts of gaze-dependent lighting on energy consumption and the visual environment will be characterized and design guidelines will be generated to facilitate the development of innovative lighting systems that consume less energy by producing less light, without negatively impacting the visual experiences of building occupants.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
Protecting prey with chemical camouflage. We develop an entirely new solution to protect rare and endangered wildlife and to improve the survival of rehabilitated and reintroduced animals at risk from alien predation. Our cost-effective approach will improve conservation efforts in Australia and our solution can be used by both large conservation organisations as well as small community groups aiming to protect key wildlife. Our technique can also be exported to solve alien species problems else ....Protecting prey with chemical camouflage. We develop an entirely new solution to protect rare and endangered wildlife and to improve the survival of rehabilitated and reintroduced animals at risk from alien predation. Our cost-effective approach will improve conservation efforts in Australia and our solution can be used by both large conservation organisations as well as small community groups aiming to protect key wildlife. Our technique can also be exported to solve alien species problems elsewhere in the world. This work strengthens Australia's world renowned expertise for research into alien species and ability to develop novel solutions to alien impactsRead moreRead less