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
Sediment-derived scenarios of wetland status and change, the Lower River Murray, SA. River Murray wetlands changed early in European settlement so the pre-impact conditions are invisible to managers relying on anecdote or monitoring. Baseline conditions of wetlands can be derived from ecological archives preserved in sediments. Fossil diatom assemblages, reflective of past water quality, and other fossils, will be exhumed from sediment sequences to reconstruct wetland conditions. The integration ....Sediment-derived scenarios of wetland status and change, the Lower River Murray, SA. River Murray wetlands changed early in European settlement so the pre-impact conditions are invisible to managers relying on anecdote or monitoring. Baseline conditions of wetlands can be derived from ecological archives preserved in sediments. Fossil diatom assemblages, reflective of past water quality, and other fossils, will be exhumed from sediment sequences to reconstruct wetland conditions. The integration of multiple indicators of the past will generate graphic re-enactments of natural wetland dynamics. These will provide a vision for community and government on-ground managers enabling them to perceive appropriate targets for wetland state and so generate measures to work towards sustainable conditions.Read moreRead less
Retrospective ecological character assessment for a review of Ramsar status of The Coorong, SA. Integrated analyses of the chemical and biological remains contained in the sediments of the Coorong will provide for a reconstruction of ecological change and variability over the last several thousand years. Detailed analyses of the recent sediments will measure how the condition of the Coorong has departed from this natural background and so provide an audit of human impact on the last wetland in t ....Retrospective ecological character assessment for a review of Ramsar status of The Coorong, SA. Integrated analyses of the chemical and biological remains contained in the sediments of the Coorong will provide for a reconstruction of ecological change and variability over the last several thousand years. Detailed analyses of the recent sediments will measure how the condition of the Coorong has departed from this natural background and so provide an audit of human impact on the last wetland in the Murray darling Basin. This evidence will directly inform the determination of the ecological character of this Ramsar listed, national ecological asset and steer its management for a sustainable future. Read moreRead less
An inventory of past biodiversity in Western Australia using ancient DNA. Fossil bones and museum skins are genetic time capsules that facilitate the exploration of Australia's past biodiversity. Travelling back in 'genetic time' provides important insights into how ecosystems functioned prior to the arrival of Europeans and the feral species that accompanied them. This funding will facilitate research into the genetic heritage of endangered WA species such as Woylies and Cockatoos. Native speci ....An inventory of past biodiversity in Western Australia using ancient DNA. Fossil bones and museum skins are genetic time capsules that facilitate the exploration of Australia's past biodiversity. Travelling back in 'genetic time' provides important insights into how ecosystems functioned prior to the arrival of Europeans and the feral species that accompanied them. This funding will facilitate research into the genetic heritage of endangered WA species such as Woylies and Cockatoos. Native species face increasing pressures from climate change and invasive species. Compiling a genetic inventory of WA's past biodiversity will assist in developing scientifically sound conservation management responses. Such approaches are critically important if this biodiversity hotspot is to be preserved for future generations.Read moreRead less
European impact on Eastern Australian coastal lakes: understanding pre-impact conditions and post-settlement modification. Coastal lakes are vulnerable to European impact, yet little is known about how they have been altered in the last 200 years. For example: Are blue-green algal blooms a natural occurrence in coastal lakes? How long have freshwater lakes been isolated from the ocean? Preliminary results indicate that, at key sites, blue-green algae were more abundant before European settlement ....European impact on Eastern Australian coastal lakes: understanding pre-impact conditions and post-settlement modification. Coastal lakes are vulnerable to European impact, yet little is known about how they have been altered in the last 200 years. For example: Are blue-green algal blooms a natural occurrence in coastal lakes? How long have freshwater lakes been isolated from the ocean? Preliminary results indicate that, at key sites, blue-green algae were more abundant before European settlement and that coastal lakes thought to be permanently fresh have been exposed to the ocean within the past 200 years. By documenting change at representative sites, the project will identify which lake types are most vulnerable to impact. Results from the project will ensure that costly restoration efforts are not misplaced.Read moreRead less
The role of natural selection in macroevolution: a case study examining convergence of form and function in marine predator guilds. Darwin's theory of evolution natural selection is one of the most successful in the history of science and provides the framework for modern biology: however, areas of debate or uncertainty are often misinterpreted by non-scientists as indication of fundamental flaws in the theory. New 'hi-tech' tools provide the opportunity to re-examine these areas, and also to de ....The role of natural selection in macroevolution: a case study examining convergence of form and function in marine predator guilds. Darwin's theory of evolution natural selection is one of the most successful in the history of science and provides the framework for modern biology: however, areas of debate or uncertainty are often misinterpreted by non-scientists as indication of fundamental flaws in the theory. New 'hi-tech' tools provide the opportunity to re-examine these areas, and also to demonstrate the process of science to the public. The new tool is Computational Biomechanics, the future of studying biological form, and this project will further develop the leading role of Australian research in this technology which has applications for palaeontology, environmental management, medical science, and the next generation of engineering using 'biomaterials'.Read moreRead less
Light islands in a sea of dark rainforest: Human influence on fire, climate and biodiversity in the Australian tropics. A key outcome will be an informed framework for protecting and enhancing biodiversity in the face of global warming. This research will build on previous archaeological and palaeoecological studies into plant processing practices; provide mediation between different approaches to rainforest management and further an understanding of the antiquity of rainforest occupation in the ....Light islands in a sea of dark rainforest: Human influence on fire, climate and biodiversity in the Australian tropics. A key outcome will be an informed framework for protecting and enhancing biodiversity in the face of global warming. This research will build on previous archaeological and palaeoecological studies into plant processing practices; provide mediation between different approaches to rainforest management and further an understanding of the antiquity of rainforest occupation in the Wet Tropics World Heritage Zone. Aboriginal communities see the collection of archaeological data as pivotal in gaining control over their cultural sites, which leads to partnerships between universities and communities. Furthermore, close institutional and community relationships have increased the flow of knowledge about past Indigenous rainforest management.Read moreRead less
Quantifying the effects of western colonisation on Great Barrier Reef molluscan communities. Dead shells provide a record of the pre-colonisation Great Barrier Reef (GBR) ecosystem. Using this record this research will determine what the GBR looked like before James Cook and the first fleet arrived in Australia. This study will also sample living molluscs to quantify the current state of these communities. Together these data will provide environment managers and stakeholders with the first quan ....Quantifying the effects of western colonisation on Great Barrier Reef molluscan communities. Dead shells provide a record of the pre-colonisation Great Barrier Reef (GBR) ecosystem. Using this record this research will determine what the GBR looked like before James Cook and the first fleet arrived in Australia. This study will also sample living molluscs to quantify the current state of these communities. Together these data will provide environment managers and stakeholders with the first quantitative estimates of human impacts on this world heritage ecosystem. This project will address the questions: Do protected areas return to a pre-colonial state or do they represent another non-natural state? What type of management scheme results in communities most similar to the pre-colonial state?Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE100100141
Funder
Australian Research Council
Funding Amount
$420,000.00
Summary
High-resolution ITRAX XRF core scanning facility for global change research. This facility will enable researchers to obtain high-resolution geochemical profiles in the study of environmental change and climate variability. It will provide archive data on the variation of density and chemical element composition along sediment and soil cores, rock cores, wood samples, speleothems and corals. These archives contain important information such as human activity, climate variability, water quality c ....High-resolution ITRAX XRF core scanning facility for global change research. This facility will enable researchers to obtain high-resolution geochemical profiles in the study of environmental change and climate variability. It will provide archive data on the variation of density and chemical element composition along sediment and soil cores, rock cores, wood samples, speleothems and corals. These archives contain important information such as human activity, climate variability, water quality changes, pollution histories, recent geomorphological change, land-use change, introduction of invasive species and the occurrence of bushfires. A better understanding of the occurrence and timing of these major environmental issues is of national and regional importance.Read moreRead less