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Discovery Early Career Researcher Award - Grant ID: DE150100026
Funder
Australian Research Council
Funding Amount
$379,536.00
Summary
Insect diversity and carrion decomposition in modified landscapes. Decomposition is fundamental to the recycling of nutrients in ecosystems, yet it is not known how different combinations of decomposer insects contribute to this important ecosystem service. This project includes a series of experiments to examine how insects affect carrion decomposition rates, and how this depends on environmental context. The project aims to show how decomposition is maintained in variable and changing landscap ....Insect diversity and carrion decomposition in modified landscapes. Decomposition is fundamental to the recycling of nutrients in ecosystems, yet it is not known how different combinations of decomposer insects contribute to this important ecosystem service. This project includes a series of experiments to examine how insects affect carrion decomposition rates, and how this depends on environmental context. The project aims to show how decomposition is maintained in variable and changing landscapes by revealing when the loss or gain of species will alter this critical ecological process. This will have implications for biodiversity-ecosystem function theory, and applications to biodiversity management and ecosystem restoration.Read moreRead less
Explaining biodiversity. Why are there many species in some places and not in others? The aim of this project is to understand this in order to protect species, understand invasion and restore ecological systems. Using published food webs, this project will determine what factors underlie biodiversity, then use experiments to understand effects of habitat loss and climate change on food web structure.
Overcoming multiple constraints to wetland forest restoration. This project aims to determine the efficacy of different approaches for restoring wetland forests at the landscape scale. The death and decline of Victoria’s wetland forests, crucial habitat for the endangered helmeted honeyeater and Leadbeater's possum, most likely result from modified flooding patterns, low native tree and shrub recruitment and increased competition from understorey plants. The project intends to reinstate a more n ....Overcoming multiple constraints to wetland forest restoration. This project aims to determine the efficacy of different approaches for restoring wetland forests at the landscape scale. The death and decline of Victoria’s wetland forests, crucial habitat for the endangered helmeted honeyeater and Leadbeater's possum, most likely result from modified flooding patterns, low native tree and shrub recruitment and increased competition from understorey plants. The project intends to reinstate a more natural flood regime, planting native species and reducing competition from dense understorey vegetation. In this way, the project aims to test and advance ecological theory, guide wetland restoration and inform management plans for saving Victoria’s iconic fauna.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.
Cascading effects of Australia's ecological extinctions on biodiversity and ecosystem function. The current rate of species extinctions is so extensive that it has been described as the “sixth mass extinction”. In Australian ecosystems, extinctions and declines of mammals have been dramatic, with formerly abundant species now “ecologically extinct”, meaning they are too rare to continue to play important ecological roles. The loss of entire functional guilds may have cascading effects on biodive ....Cascading effects of Australia's ecological extinctions on biodiversity and ecosystem function. The current rate of species extinctions is so extensive that it has been described as the “sixth mass extinction”. In Australian ecosystems, extinctions and declines of mammals have been dramatic, with formerly abundant species now “ecologically extinct”, meaning they are too rare to continue to play important ecological roles. The loss of entire functional guilds may have cascading effects on biodiversity and ecosystem function. This project uses a multi-scalar experimental approach to investigate the broader impacts of mammal declines on Australian ecosystems, accounting for interactions with climate. The outcomes will include new insights into the pre-European state of Australian ecosystems and more realistic targets for ecosystem restoration.Read moreRead less
Sex and the generation gap: seasonal changes in sex allocation. Answering the question 'When is it better to produce more sons than daughters?' has shed important insights into fundamental questions in biology and led to theory that can be applied to problems in agriculture, fisheries and conservation. The project will extend the current theory to increase its applicability, and test it using an introduced pest fish.
Discovery Early Career Researcher Award - Grant ID: DE120102221
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Investigating the susceptibility of native vegetation edges to alien plant invasion: a quantitative study to help prevent and control invasive species. Alien plant invasion is a major threat to biodiversity in national parks and nature reserves. Determining the relative influence of plant characteristics, number of alien plant seeds and availability of light, water and nutrients on weed invasion will indicate what prevention and control strategies should be used to combat invasive plants.
Ecology and phylogeography of bird migration between Australia and New Guinea: paradise kingfishers as a model species. This project examines the evolutionary causes and ecological consequences of intra-tropical bird migration between north Australia and New Guinea, one of the major migration systems of the southern hemisphere. I will use the buff-breasted paradise kingfisher as a model species, exploiting two features of its biology (an aerodynamically costly tail and a breeding distribution wi ....Ecology and phylogeography of bird migration between Australia and New Guinea: paradise kingfishers as a model species. This project examines the evolutionary causes and ecological consequences of intra-tropical bird migration between north Australia and New Guinea, one of the major migration systems of the southern hemisphere. I will use the buff-breasted paradise kingfisher as a model species, exploiting two features of its biology (an aerodynamically costly tail and a breeding distribution with a large latitudinal range) to shed light on the costs, benefits, and ecological correlates of intra-tropical migration. Molecular markers will be used to identify non-breeding distributions, migratory patterns, and the biogeographic histories of the different breeding populations within Australia.Read moreRead less
Can inbreeding avoidance cause the evolution of sex-biased dispersal? This project aims to combine unique long-term data with a novel Citizen Science approach to seek to provide the first complete test of the hypothesis that inbreeding avoidance can cause one of the best known patterns in mammal and bird societies - sex differences in when and how far juveniles disperse. Dispersal is a critically important ecological and evolutionary process, as it influences the fate of populations, and also de ....Can inbreeding avoidance cause the evolution of sex-biased dispersal? This project aims to combine unique long-term data with a novel Citizen Science approach to seek to provide the first complete test of the hypothesis that inbreeding avoidance can cause one of the best known patterns in mammal and bird societies - sex differences in when and how far juveniles disperse. Dispersal is a critically important ecological and evolutionary process, as it influences the fate of populations, and also determines the individuals with which a disperser will spend the remainder of its life. It therefore shapes the likelihood that kin will interact to cooperate or compete, and determines the pool of individuals with which the disperser can mate.Read moreRead less
Biogeography of avian mating systems: polyandry, reverse-plumage dimorphism, and sexual selection in Cape York and New Guinea eclectus parrots. Current sexual selection theory explains how one sex can be strongly sexually selected through competition or mate choice, or how sexual selection can push both sexes in the same direction through mutual mate choice. However, the strong and independent sexual selection in both sexes of eclectus parrot is unique amongst birds, and poses a major challenge ....Biogeography of avian mating systems: polyandry, reverse-plumage dimorphism, and sexual selection in Cape York and New Guinea eclectus parrots. Current sexual selection theory explains how one sex can be strongly sexually selected through competition or mate choice, or how sexual selection can push both sexes in the same direction through mutual mate choice. However, the strong and independent sexual selection in both sexes of eclectus parrot is unique amongst birds, and poses a major challenge to existing theory. Here I propose novel field experiments and biogeographical comparisons of populations in Cape York and New Guinea that, when combined with molecular techniques and spectro-radiometry, will identify the elements of competition and mate choice responsible for their extraordinary reverse plumage dimorphism.Read moreRead less