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
Is a grass-fire cycle reducing biodiversity in the stone country of Kakadu National Park? There is concern that bushfires in northern Australia are causing biodiversity loss. The project will compare fire regimes and populations of a fire-sensitive tree, Callitris intratropica, in Kakadu to similar areas in central Arnhem Land, to see how fire management can be optimised to prevent further biodiversity loss on the Arnhem Plateau.
Pyroherbivory and the nexus between Aboriginal fire mosaics and kangaroos. This project aims to examine the effects of traditional Aboriginal and contemporary fire management on kangaroo abundance. There is concern that the cessation of Aboriginal patch burning is causing savanna kangaroo populations to decline across northern Australia. In this project, surveys will be planned to determine whether fire regime (frequency, extent, season) affects kangaroo distribution and abundance and the degree ....Pyroherbivory and the nexus between Aboriginal fire mosaics and kangaroos. This project aims to examine the effects of traditional Aboriginal and contemporary fire management on kangaroo abundance. There is concern that the cessation of Aboriginal patch burning is causing savanna kangaroo populations to decline across northern Australia. In this project, surveys will be planned to determine whether fire regime (frequency, extent, season) affects kangaroo distribution and abundance and the degree to which non-native large herbivores compete with kangaroos for forage. Experiments will also be planned to discover how the season of burning influences forage quality and quantity. This project is designed to determine if patch burning can be used for ecological restoration in areas where this type of fire management has ceased and for improvement of tropical savanna fire management.Read moreRead less
Biotic connectivity within the temperate Australian marine protected area network at three levels of biodiversity, communities, populations and genes. Project outcomes will improve management of coastal biodiversity through a multi-state collaboration of managers, marine ecologists, population geneticists and taxonomists. Sites most needed within marine protected area (MPA) networks for maintaining resilience of populations across seascapes will be identified, including sites with exceptional en ....Biotic connectivity within the temperate Australian marine protected area network at three levels of biodiversity, communities, populations and genes. Project outcomes will improve management of coastal biodiversity through a multi-state collaboration of managers, marine ecologists, population geneticists and taxonomists. Sites most needed within marine protected area (MPA) networks for maintaining resilience of populations across seascapes will be identified, including sites with exceptional endemism or key roles in dispersal of larvae. The ecological efficacy of the temperate Australian MPA network will be assessed through analysis of long-term ecological datasets and further development of a novel 'remote sensing' methodology, whereby surveys are undertaken by volunteer divers across much greater spatial and temporal scales than could be studied by dedicated scientific dive teams.Read moreRead less