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Testing the importance of large-scale climate factors to plant community assembly following land-use change. This project will examine the native plant species and functional diversity of Australia's rain forest communities to create a predictive framework of how plant communities recover following deforestation. Such a framework is key to focusing conservation efforts in degraded and multi-use landscapes.
Optimal photosynthetic traits on ecological time-scales. This project aims to understand how soils and climate shape plant ecological strategies for nutrient and water use in photosynthesis. Terrestrial biosphere models (including ecosystem, land surface and vegetation models) are based on a biochemical model for photosynthesis that accurately represents processes on physiological time-scales but lacks the ecological-evolutionary perspective needed to understand species’ adaptations along geogra ....Optimal photosynthetic traits on ecological time-scales. This project aims to understand how soils and climate shape plant ecological strategies for nutrient and water use in photosynthesis. Terrestrial biosphere models (including ecosystem, land surface and vegetation models) are based on a biochemical model for photosynthesis that accurately represents processes on physiological time-scales but lacks the ecological-evolutionary perspective needed to understand species’ adaptations along geographic gradients of soils and climate. This project will integrate theory based on microeconomic and optimality principles with empirical analysis of local- and global-scale trait datasets. This knowledge is intended to form the core of a ‘next-generation’ global vegetation model. This will allow government agencies to discover the likely effects of future climate and carbon dioxide changes on Australian vegetation structure, function and composition, forest productivity, and biodiversity.Read moreRead less
Stress, virulence and bacterial disease in temperate seaweeds: the rise of the microbes. Climate change is predicted to increase the spread and virulence of pathogens, and decrease the resistance to disease via temperature stress on the hosts. Combined with other human impacts (higher nutrients, pollution), we may be facing a major rise in the effect of disease on natural communities. However, these effects are largely unstudied. We will investigate the impact of marine pathogens on kelps and ....Stress, virulence and bacterial disease in temperate seaweeds: the rise of the microbes. Climate change is predicted to increase the spread and virulence of pathogens, and decrease the resistance to disease via temperature stress on the hosts. Combined with other human impacts (higher nutrients, pollution), we may be facing a major rise in the effect of disease on natural communities. However, these effects are largely unstudied. We will investigate the impact of marine pathogens on kelps and other seaweeds when they are stressed by temperature, elevated nutrients or other anthropogenic stressors. Kelp are the 'trees of the oceans', the organisms responsible for creating much of the habitat that fishes and other organisms live in. The loss of kelp forests due to disease would radically change these environments.Read moreRead less
The renaissance predator: complex predator-prey interactions and vertebrate diversity in arid Australia. This project will greatly increase understanding of how predators influence the ecology and diversity of their prey in Australia's deserts, and thus improve our ability to conserve and manage our iconic but fragile inland landscapes. It will increase awareness locally about the richness of desert life and stimulate national and international interest by contributing to emerging debate about h ....The renaissance predator: complex predator-prey interactions and vertebrate diversity in arid Australia. This project will greatly increase understanding of how predators influence the ecology and diversity of their prey in Australia's deserts, and thus improve our ability to conserve and manage our iconic but fragile inland landscapes. It will increase awareness locally about the richness of desert life and stimulate national and international interest by contributing to emerging debate about how predators influence diversity. It will also establish an unparalleled 24-year time series of ecological data, and thus provide a key resource to chart the biological effects of climate change and assist sustainable management of biodiversity across the continent's vast interior. Read moreRead less
Boom and bust: the role of fire and rain in driving the dynamics of seeds and rodents in arid Australia. The arid Australian environment oscillates between spectacular boom periods, when biotic productivity and diversity are high, and busts, when biotic resources are depleted. This project first outlines a conceptual model of this dynamic and complex system. It then investigates the roles of rainfall and fire in driving boom-bust events, focusing particularly on food resources (seeds) and their ....Boom and bust: the role of fire and rain in driving the dynamics of seeds and rodents in arid Australia. The arid Australian environment oscillates between spectacular boom periods, when biotic productivity and diversity are high, and busts, when biotic resources are depleted. This project first outlines a conceptual model of this dynamic and complex system. It then investigates the roles of rainfall and fire in driving boom-bust events, focusing particularly on food resources (seeds) and their consumers (desert rodents) in the hyper-variable Simpson Desert. We propose observations and experiments to quantify how these climatic events affect seed production, seed fate, and ultimately the dynamics of desert rodents, and outline their importance for effective management of the desert environment.Read moreRead less
Toad vs Toad: Innovative approaches to understand and control an invasive species. Understanding the ecology of an invasive pest species can be a powerful tool for developing control methods. Cane toads pose a major threat to Australian native species, and are spreading increasingly rapidly through the Australian tropics. Unfortunately, we still know very little about the biology of invasion-front populations of toads. This project will provide that understanding, and will explore new ideas a ....Toad vs Toad: Innovative approaches to understand and control an invasive species. Understanding the ecology of an invasive pest species can be a powerful tool for developing control methods. Cane toads pose a major threat to Australian native species, and are spreading increasingly rapidly through the Australian tropics. Unfortunately, we still know very little about the biology of invasion-front populations of toads. This project will provide that understanding, and will explore new ideas about ways to control toad populations. For example, if we can reduce the survival of feral animals by increasing the intensity of competition within their own popualtions rather than relying on effects of other species, we may be able to use the toads to control their own populations.Read moreRead less
Turf Wars: fighting the new battle facing blue forests. This project aims to use ecological models and field experiments to uncover drivers and critical thresholds for turf expansion. Habitat loss is a leading threat to goods and services from the oceans. Globally, kelp forests are collapsing and being replaced by persistent unwanted algal ‘turfs’. Understanding of this habitat shift is rudimentary, and solutions to mitigate the impacts virtually non-existent. Through stress experiments and geno ....Turf Wars: fighting the new battle facing blue forests. This project aims to use ecological models and field experiments to uncover drivers and critical thresholds for turf expansion. Habitat loss is a leading threat to goods and services from the oceans. Globally, kelp forests are collapsing and being replaced by persistent unwanted algal ‘turfs’. Understanding of this habitat shift is rudimentary, and solutions to mitigate the impacts virtually non-existent. Through stress experiments and genomic analyses, this project aims to discover resilient kelps that promote forest persistence under stress. By expanding our understanding of critical habitat transitions, and exploring new solutions, this project aims to enhance our capacity to respond to the ongoing degradation of Australia’s Great Southern Reef.Read moreRead less
An elemental hypothesis for sub-tropical refugia in reef corals. This project aims to discover the underlying traits that permit Australian reef corals to live near the edges of their ranges in relatively cool water. As ocean temperatures warm, novel communities are expected to develop in high latitude ecosystems, which might become important as thermal refugia for low latitude coral reefs. The project aims to test the role of elemental composition (carbon, nitrogen and phosphorus) in coral host ....An elemental hypothesis for sub-tropical refugia in reef corals. This project aims to discover the underlying traits that permit Australian reef corals to live near the edges of their ranges in relatively cool water. As ocean temperatures warm, novel communities are expected to develop in high latitude ecosystems, which might become important as thermal refugia for low latitude coral reefs. The project aims to test the role of elemental composition (carbon, nitrogen and phosphorus) in coral host and symbiont response to changing water temperature along a latitudinal gradient. The intended outcome of the project is to provide knowledge to support predictions of likely species migrations from tropical to subtropical waters, enabling managers to anticipate the future response of coral communities to seawater warming.Read moreRead less
Dispersal and gene flow in habitat-forming algae. The temperate coast of Australia has a unique and diverse algal flora. Many of these algae play a central role in subtidal ecology by providing habitat to an astonishing diversity of taxa. Despite this, we have no understanding of levels of gene flow within and among populations of habitat forming algae or how such populations persist in nature. By addressing this lack of knowledge, my research will contribute information that is critical for the ....Dispersal and gene flow in habitat-forming algae. The temperate coast of Australia has a unique and diverse algal flora. Many of these algae play a central role in subtidal ecology by providing habitat to an astonishing diversity of taxa. Despite this, we have no understanding of levels of gene flow within and among populations of habitat forming algae or how such populations persist in nature. By addressing this lack of knowledge, my research will contribute information that is critical for the conservation and management of algal habitats. This is particularly pertinent because anthropogentic stressors are beginning to precipitate significant changes in algal forests along Australia's coastline. Read moreRead less
Discovering how termites use vibrations to make foraging decisions. Termites are pests affecting one third of Australian homes. The annual cost of treatment and damage repair is over $20 billion worldwide. Yet, little is known about how termites make foraging decisions based on vibrations. This project will study the key features in vibration signals produced by termites to unlock the secrets of their foraging behaviour.