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Population response to climate change in a host-parasite system. A computer model will be developed to predict the impact of climate change on geographic ranges and population densities of the sleepy lizard, the world's only lizard to be recorded to show long-term monogamy, and its associated parasitic ticks. A blood parasite, carried by the tick, and potentially harmful to the lizards, will also be included in the investigation. The study forms the next step in a 21 year research project by Fli ....Population response to climate change in a host-parasite system. A computer model will be developed to predict the impact of climate change on geographic ranges and population densities of the sleepy lizard, the world's only lizard to be recorded to show long-term monogamy, and its associated parasitic ticks. A blood parasite, carried by the tick, and potentially harmful to the lizards, will also be included in the investigation. The study forms the next step in a 21 year research project by Flinders university biologists. It will inform wildlife management about disease control and provide deeper understanding of the response of Australian fauna to climate change.Read moreRead less
Movement patterns and habitat utilisation of the endangered eastern freshwater cod, Maccullochella ikei Rowland. The project aims to quantify the movement patterns and habitat utilisation of the endangered eastern freshwater cod (Maccullochella ikei) at a larval, juvenile, adult and historical level. Most previous studies regarding the life-history of fish species have failed to adopt this holistic approach, with management often based on fragmented information. The project will also provide an ....Movement patterns and habitat utilisation of the endangered eastern freshwater cod, Maccullochella ikei Rowland. The project aims to quantify the movement patterns and habitat utilisation of the endangered eastern freshwater cod (Maccullochella ikei) at a larval, juvenile, adult and historical level. Most previous studies regarding the life-history of fish species have failed to adopt this holistic approach, with management often based on fragmented information. The project will also provide an insight into the biology of one of the most poorly understood coastal stream fishes of eastern-Australia and assist in ensuring the conservation of this endangered species, and offer a framework from which future studies into the life history of freshwater fish species worldwide can be based.Read moreRead less
Conservation genetics of the Endangered Oxleyan Pygmy Perch Nannoperca oxleyana. The aim of this study is to determine how isolation of populations of the endangered Oxleyan Pygmy Perch Nannoperca Oxleyana affects their genetic composition. The significance of the study is that it will enhance our ability to conserve the species, and enhance our understanding of the genetics of isolated populations of freshwater fish generally.
Vegetation change in coastal Parks and Reserves: risk assessment and management of woody invaders. Coastal heath ecosystems contain some of the highest diversity of plant species for any vegetation type within temperate Australia. These communities exist within and outside the Reserve system, but even those within Parks and Reserves may be undergoing rapid change in structure and composition as a result of invading environmental weeds, resulting in a significant loss of biological diversity. As ....Vegetation change in coastal Parks and Reserves: risk assessment and management of woody invaders. Coastal heath ecosystems contain some of the highest diversity of plant species for any vegetation type within temperate Australia. These communities exist within and outside the Reserve system, but even those within Parks and Reserves may be undergoing rapid change in structure and composition as a result of invading environmental weeds, resulting in a significant loss of biological diversity. As agriculture, tourism and other developments place increasing pressure on these diminishing ecosystems, the maintenance of their biodiversity takes on increasing importance. This project will identify threatening processes and devise cost-effective, practicable management strategies in a context of competing stakeholder interests.Read moreRead less
Bio-optical model of Antarctic sea-ice algae photosynthesis. Antarctica contains no permanent human population; however the impact of climate change is being observed. Sea-ice is slowly becoming less thick and covering smaller areas of the Southern Ocean. Algae grow on the underside of this sea-ice which feed krill, which in turn support most of the Antarctic food web. Understanding how changes in sea-ice and snow thickness will change the productivity of Antarctica will have significant implica ....Bio-optical model of Antarctic sea-ice algae photosynthesis. Antarctica contains no permanent human population; however the impact of climate change is being observed. Sea-ice is slowly becoming less thick and covering smaller areas of the Southern Ocean. Algae grow on the underside of this sea-ice which feed krill, which in turn support most of the Antarctic food web. Understanding how changes in sea-ice and snow thickness will change the productivity of Antarctica will have significant implications to our management of this wilderness. Knowledge of how sea-ice algae responds to changes in light can be incorporated in climate change models.Read moreRead less
Retroviral invasion of the koala genome: prevalence, transmission and role in immunosuppressive disease. Koalas are a national symbol yet many of their populations are in decline as a result of habitat loss and disease. Lymphoid cancers and opportunistic infections are significant diseases in both captive and wild koala populations. We previously demonstrated that the recently identified koala retrovirus is associated with lymphoid cancer in koalas. This project will determine the distribution o ....Retroviral invasion of the koala genome: prevalence, transmission and role in immunosuppressive disease. Koalas are a national symbol yet many of their populations are in decline as a result of habitat loss and disease. Lymphoid cancers and opportunistic infections are significant diseases in both captive and wild koala populations. We previously demonstrated that the recently identified koala retrovirus is associated with lymphoid cancer in koalas. This project will determine the distribution of the virus in Australia, the mechanism of its spread and its effect on the immune function of koalas. This research will provide a foundation for better management of captive koalas and for conservation of wild koalas.Read moreRead less
How do ecologically significant complex traits evolve in natural populations? Evolution and selection on plant chemistry in Eucalyptus. The scent of Eucalyptus oil is one of the signatures of Australia but we actually import large amounts of these oils. As well as being valuable industrially, Eucalyptus oils also influence many aspects of our environment ranging from icons such as the koala to the occurrence of smog in cities. Understanding how plants make these oils helps us to understand eco ....How do ecologically significant complex traits evolve in natural populations? Evolution and selection on plant chemistry in Eucalyptus. The scent of Eucalyptus oil is one of the signatures of Australia but we actually import large amounts of these oils. As well as being valuable industrially, Eucalyptus oils also influence many aspects of our environment ranging from icons such as the koala to the occurrence of smog in cities. Understanding how plants make these oils helps us to understand ecological processes and also to improve the financial incentives for land restoration through the planting of valuable oil-bearing trees. We aim to use recent new techniques in genetics to explain why the quantity and types of Eucalyptus oils vary so widely and to apply this information to improving land management and conservation.Read moreRead less
Testing the DNA decay hypothesis of ecological specialization. Australia's biodiversity has been increasingly threatened by climate change and fragmentation from habitat loss. To conserve biodiversity we need to identify species most at risk of extinction. One way species avoid extinction is to evolve and adapt to changing conditions, however, it now appears that many species have a limited adaptive potential. Here we develop and test a new idea that helps to predict species most threatened b ....Testing the DNA decay hypothesis of ecological specialization. Australia's biodiversity has been increasingly threatened by climate change and fragmentation from habitat loss. To conserve biodiversity we need to identify species most at risk of extinction. One way species avoid extinction is to evolve and adapt to changing conditions, however, it now appears that many species have a limited adaptive potential. Here we develop and test a new idea that helps to predict species most threatened by climate change and other types of stresses. We also identify the sets of genes that are involved in adapting to dry/cold conditions and toxins. This information provides a rapid way of identifying species most at risk and least likely to adapt, and a new perspective on Australia's biodiversity.Read moreRead less
Molecular phylogeny and biodiversity of the plant family Rutaceae: evidence for Australian-New Caledonian biogeography. The results will contribute biological evidence for geological models of the evolution of New Caledonia and the Southwest Pacific region. Analyses will also contribute to improvement of methods and data interpretation in the field of historical biogeography. The molecular phylogeny will be the foundation for a new predictive classification of Australian Rutaceae at the level ....Molecular phylogeny and biodiversity of the plant family Rutaceae: evidence for Australian-New Caledonian biogeography. The results will contribute biological evidence for geological models of the evolution of New Caledonia and the Southwest Pacific region. Analyses will also contribute to improvement of methods and data interpretation in the field of historical biogeography. The molecular phylogeny will be the foundation for a new predictive classification of Australian Rutaceae at the level of tribes and genera. Improved phylogenetic classification underpins the delivery of biodiversity research, goods and services in Australia. Outcomes of improved taxonomy include species identification for ecological studies, identification of rare species, geographic areas of high conservation value and plants for horticulture.Read moreRead less
Conservation, health and disease in the endangered marsupial, the Western Barred Bandicoot (Perameles bougainville). Western Barred Bandicoots are highly endangered marsupials, found in the wild only on Bernier and Dorre islands in Western Australia. Captive breeding and reintroduction efforts, considered essential for survival of this species, are currently hampered by a progressively debilitating, wart-like syndrome and reduced fertility. This project will use pathological, immunohistochemical ....Conservation, health and disease in the endangered marsupial, the Western Barred Bandicoot (Perameles bougainville). Western Barred Bandicoots are highly endangered marsupials, found in the wild only on Bernier and Dorre islands in Western Australia. Captive breeding and reintroduction efforts, considered essential for survival of this species, are currently hampered by a progressively debilitating, wart-like syndrome and reduced fertility. This project will use pathological, immunohistochemical and ultrastructural techniques in combination with novel molecular methods, and lymphocyte proliferation assays to determine the causes and conservation implications of these conditions. The hypothesis is that these conditions are a consequence of a viral or chlamydial infection in immunocompromised animals.Read moreRead less