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Effects of European colonisation on indigenous ecosystems: multiple-scale spatial structure of pre- and post-settlement Callitris forests. Since European colonisation, altered disturbance regimes, especially fire and grazing, have greatly affected intact ecosystems across the globe. However, the extent and causes of changes are often hotly contested. This study will examine how European colonisation has affected natural ecosystems, by documenting historical fire regimes and comparing pre- and po ....Effects of European colonisation on indigenous ecosystems: multiple-scale spatial structure of pre- and post-settlement Callitris forests. Since European colonisation, altered disturbance regimes, especially fire and grazing, have greatly affected intact ecosystems across the globe. However, the extent and causes of changes are often hotly contested. This study will examine how European colonisation has affected natural ecosystems, by documenting historical fire regimes and comparing pre- and post-settlement forest patterns across multiple spatial scales. The study will be conducted in temperate Callitris forests, and will provide the first, multiple-scale, spatial analysis of post-settlement vegetation changes in Australia. Results will enhance our global understanding of European environmental impacts and provide quantitative benchmarks to inform vegetation management.Read moreRead less
Grazing as a management tool for biodiversity conservation: adaptive management strategies for threatened grassland ecosystems. Lowland temperate grasslands are threatened Australian ecosystems that support an important, and in many cases threatened, biota. These habitats are significantly under-represented in the reserve system, and occur in bioregions that have been subjected to extensive vegetation clearing, intensive production and high stocking densities. This project will develop strategie ....Grazing as a management tool for biodiversity conservation: adaptive management strategies for threatened grassland ecosystems. Lowland temperate grasslands are threatened Australian ecosystems that support an important, and in many cases threatened, biota. These habitats are significantly under-represented in the reserve system, and occur in bioregions that have been subjected to extensive vegetation clearing, intensive production and high stocking densities. This project will develop strategies for maintenance of species and habitat diversity in grasslands through the application of adaptive management principles informed by rigorous ecological research. Outcomes include best-practice approaches to on- and off-reserve management in grazed ecosystems, and better approaches to the interaction between research and biodiversity conservationRead moreRead less
Grazing-fire interactions and vegetation dynamics. Grazing and fire are the two major cost-effective tools that can be used to manipulate the vegetation of reserves and rangelands. This project will result in information and models that will enable a more effective use of grazing than at present in natural vegetation management for both nature conservation and production. An understanding of the ways in which vertebrate grazing animals influence the incidence and intensity of fire is also highly ....Grazing-fire interactions and vegetation dynamics. Grazing and fire are the two major cost-effective tools that can be used to manipulate the vegetation of reserves and rangelands. This project will result in information and models that will enable a more effective use of grazing than at present in natural vegetation management for both nature conservation and production. An understanding of the ways in which vertebrate grazing animals influence the incidence and intensity of fire is also highly important in planning to prevent the occasional vegetation fire that causes substantial losses of life, property and conservation values, especially in the context of predicted climatic change.Read moreRead less
Novel species interactions arising from synergistic environmental changes. Synergistic environmental changes, including climate and land use change, are altering Australia's ecosystems and creating novel species assemblages. We know little about how these assemblages develop and function, and yet they are likely to become more pervasive and provide a significant conservation and restoration challenge. We aim to improve our understanding of the factors affecting the creation of novel plant assemb ....Novel species interactions arising from synergistic environmental changes. Synergistic environmental changes, including climate and land use change, are altering Australia's ecosystems and creating novel species assemblages. We know little about how these assemblages develop and function, and yet they are likely to become more pervasive and provide a significant conservation and restoration challenge. We aim to improve our understanding of the factors affecting the creation of novel plant assemblages (through invasions and changes in species' ranges) in the York Gum woodlands of Western Australia. We will examine how novel assemblages function, improve the ability to predict potential ongoing changes in assemblages and provide guidance for the management of these and other internationally important plant communities.Read moreRead less
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
Landscape-scale monitoring and adaptive management of woodland birds in the Mt Lofty Ranges. Despite the fundamental role of scientific monitoring in nature conservation, its research importance and potential is widely neglected. There is an urgent need to improve quantitative rigour, particularly to ensure adequate statistical power is achieved when monitoring at a landscape scale. We will apply new analytical tools to the problem of devising a powerful and flexible monitoring regime for a high ....Landscape-scale monitoring and adaptive management of woodland birds in the Mt Lofty Ranges. Despite the fundamental role of scientific monitoring in nature conservation, its research importance and potential is widely neglected. There is an urgent need to improve quantitative rigour, particularly to ensure adequate statistical power is achieved when monitoring at a landscape scale. We will apply new analytical tools to the problem of devising a powerful and flexible monitoring regime for a highly threatened woodland bird community in South Australia. Monitoring will be embedded within a decision-making framework with explicit links to local management agencies. Results will be broadly applicable across agricultural areas of Australia, where bird assemblages are in general decline.Read moreRead less
Sustainable Farms: Tree Regeneration and the Future of Farmland Biodiversity. While many government and community initiatives aim to enhance the sustainability of Australian farming systems, none specifically target the important regional-scale threatening process of tree recruitment failure. Unless this problem is addressed urgently, many farming landscapes may be virtually treeless in the future, with severe negative ramifications for both biodiversity and agricultural productivity. 'Sustainab ....Sustainable Farms: Tree Regeneration and the Future of Farmland Biodiversity. While many government and community initiatives aim to enhance the sustainability of Australian farming systems, none specifically target the important regional-scale threatening process of tree recruitment failure. Unless this problem is addressed urgently, many farming landscapes may be virtually treeless in the future, with severe negative ramifications for both biodiversity and agricultural productivity. 'Sustainable Farms' will have major national and community benefits because it will: (1) identify more sustainable farming practices that are conducive to successful tree recruitment in the future, and (2) raise awareness about a much neglected threat to the sustainability of Australian farming landscapes.Read moreRead less
A physiological and biochemical basis for seed storage for biodiversity conservation and restoration. Seed banking is a vital component of the integrated strategies required to conserve biodiversity and restore degraded landscapes. The effectiveness of seed banking for Australian flora is limited by a lack of research into the factors affecting seed viability during storage. For key indicative Australian species this study will focus on morphological, biophysical and biochemical factors governin ....A physiological and biochemical basis for seed storage for biodiversity conservation and restoration. Seed banking is a vital component of the integrated strategies required to conserve biodiversity and restore degraded landscapes. The effectiveness of seed banking for Australian flora is limited by a lack of research into the factors affecting seed viability during storage. For key indicative Australian species this study will focus on morphological, biophysical and biochemical factors governing seed longevity to determine the optimum storage conditions and identify bio-indicators of seed deterioration for rapid determination of seed storage behaviour. This project will develop benchmark standards by which the estimated 325 seed banks storing native seeds in Australia will benefit.Read moreRead less
Time frame for the evolution of Australia's extraordinary mammals. This Project will refine a national biostratigraphic framework integrating growing understanding about the history of Australia's unique mammals, climate change and geological events. Increasing precision in correlating Australia's phylogenetic, palaeoecological and palaeoclimatological events will clarify how these act synergistically to change environments and biodiversity. Increased precision in the biostratigraphic framework ....Time frame for the evolution of Australia's extraordinary mammals. This Project will refine a national biostratigraphic framework integrating growing understanding about the history of Australia's unique mammals, climate change and geological events. Increasing precision in correlating Australia's phylogenetic, palaeoecological and palaeoclimatological events will clarify how these act synergistically to change environments and biodiversity. Increased precision in the biostratigraphic framework will also serve evolutionary genetics which needs age data to calculate molecular rates of divergence, economic geologists needing to know the age of Cainozoic sediments, biologists trying to understand the origins and nature of biodiversity and conservationists using divergence dates and relative branch lengths to help determine conservation priorities. Read moreRead less
Managing the evolutionary potential of fragmented native plant populations. Many previously widespread plant species now exist in small fragmented populations threatened with extinction due to genetic decline. We will apply a novel and powerful new genetic approach for the assessment of the evolutionary potential of these populations. Through the most detailed characterisation of realized mating yet possible, we will determine if recently fragmented populations are in genetic decline, and how ....Managing the evolutionary potential of fragmented native plant populations. Many previously widespread plant species now exist in small fragmented populations threatened with extinction due to genetic decline. We will apply a novel and powerful new genetic approach for the assessment of the evolutionary potential of these populations. Through the most detailed characterisation of realized mating yet possible, we will determine if recently fragmented populations are in genetic decline, and how anciently fragmented species avoid extinction. Our aim is to generate general principles for the early measurement and/or prediction of genetic decline in species most at risk, that will enable us to determine how and when remediation measures are required.Read moreRead less