Ecosystem Assembly in Old Fields in the Western Australian Wheatbelt. This project aims to examine the process of ecosystem re-assembly on land which is taken out of agricultural production and left without further management. Land abandonment is common in many parts of the world and could increase dramatically in Australia due to land degradation, salinity and structural change. We will investigate the factors which influence whether native plant species can recolonise abandoned farmland, usin ....Ecosystem Assembly in Old Fields in the Western Australian Wheatbelt. This project aims to examine the process of ecosystem re-assembly on land which is taken out of agricultural production and left without further management. Land abandonment is common in many parts of the world and could increase dramatically in Australia due to land degradation, salinity and structural change. We will investigate the factors which influence whether native plant species can recolonise abandoned farmland, using field and greenhouse studies. We will do this within the context of ecosystem assembly, thereby answering a practical question and also providing input to a conceptual area which is currently of great interest inRead moreRead less
The evolution and maintenance of specificity, mutualism and diversity in plant-soil microbe interactions. This research will significantly advance knowledge regarding the evolution of mutualisms between plant and soil microbes. Results will provide valuable data on the importance of below-ground microbial community structure to growth and productivity of an ecologically important component of the Australian flora (Acacia spp.), and contribute to the development of best ecosystem restoration prac ....The evolution and maintenance of specificity, mutualism and diversity in plant-soil microbe interactions. This research will significantly advance knowledge regarding the evolution of mutualisms between plant and soil microbes. Results will provide valuable data on the importance of below-ground microbial community structure to growth and productivity of an ecologically important component of the Australian flora (Acacia spp.), and contribute to the development of best ecosystem restoration practices. Furthermore, it will see the continued development of the Acacia-rhizobia system as a world-class model for exploring interactions between perennial legumes and microbial symbionts. The research also investigates the adaptability and potential for rapid evolution of critical elements of the soil microflora to environmental change.Read moreRead less
Improving the effectiveness of marine habitat restoration. Habitat restoration is a global priority to halt and reverse declines in biodiversity, but many of these efforts fail to achieve these goals. This project aims to improve the outcomes of marine habitat restoration through greater consideration of animal behaviour. Insights into how animals evaluate restored habitats and which components of habitats are most important to animals are essential but missing ingredients in modern restoration ....Improving the effectiveness of marine habitat restoration. Habitat restoration is a global priority to halt and reverse declines in biodiversity, but many of these efforts fail to achieve these goals. This project aims to improve the outcomes of marine habitat restoration through greater consideration of animal behaviour. Insights into how animals evaluate restored habitats and which components of habitats are most important to animals are essential but missing ingredients in modern restoration methodology. By applying novel experimental and modelling approaches to current marine habitat restoration programs, this project will generate new knowledge to underpin a fundamental change in how natural resource managers restore marine habitats, with significantly improved outcomes for biodiversity.Read moreRead less
Do root microbiomes control seagrass response to environmental stress? The project aims to determine the role root microbes play in controlling seagrass responses to environmental stress. By integrating marine and microbial ecology, environmental genomics and ecosystem function (e.g., biogeochemical cycling), this project is significant as it will create new knowledge of the processes that confer seagrass resilience to global environmental issues. An expected outcome is an increased understandin ....Do root microbiomes control seagrass response to environmental stress? The project aims to determine the role root microbes play in controlling seagrass responses to environmental stress. By integrating marine and microbial ecology, environmental genomics and ecosystem function (e.g., biogeochemical cycling), this project is significant as it will create new knowledge of the processes that confer seagrass resilience to global environmental issues. An expected outcome is an increased understanding of how microbes control seagrass health and an enhanced capacity to develop effective restoration strategies for Australia's valuable seagrass ecosystems. Benefits include improving the extensive environmental, economic, social/cultural services Australian communities derive from seagrass ecosystems.Read moreRead less
Does the timing and frequency of transient pollution events affect sessile marine invertebrates? Disturbances play a fundamental role in many coastal ecosystems, and understanding how they act is central to managing coastal areas. Humans are a major source of disturbances, especially through the controlled and accidental input of toxicants. Managing these inputs requires an understanding of how the timing and frequency of pollution events affect the animals exposed to these substances. I will ....Does the timing and frequency of transient pollution events affect sessile marine invertebrates? Disturbances play a fundamental role in many coastal ecosystems, and understanding how they act is central to managing coastal areas. Humans are a major source of disturbances, especially through the controlled and accidental input of toxicants. Managing these inputs requires an understanding of how the timing and frequency of pollution events affect the animals exposed to these substances. I will use a new field dosing system to determine these relationships, using copper, a common pollutant, as a model. The results will provide a broader understanding of the role of disturbance and produce a predictive model applicable to other pollutants.Read moreRead less
Bioinvasions: the interactive effects of propagule pressure and pollution. The successful establishment of species outside their native range is an increasingly frequent occurrence and can cause reductions in biodiversity and ecosystem disruption. Bioinvasions may also cause public health risks and damage to agriculture and fisheries. Nowhere is the accelerating pace of bioinvasions more dramatic than in ports and harbours. This project will determine the effects of pollution on invasion in a ma ....Bioinvasions: the interactive effects of propagule pressure and pollution. The successful establishment of species outside their native range is an increasingly frequent occurrence and can cause reductions in biodiversity and ecosystem disruption. Bioinvasions may also cause public health risks and damage to agriculture and fisheries. Nowhere is the accelerating pace of bioinvasions more dramatic than in ports and harbours. This project will determine the effects of pollution on invasion in a marine system. This project is in the national interest because it will identify mechanisms through which the invasion of exotic species are encouraged and assist in the identification and prioritisation of effective management strategies to prevent invasion.Read moreRead less
Do pollution events facilitate biotic invasion in marine systems? This project aims to determine whether pollution affects the biological resistance of assemblages to invasion. The discharge of toxicants into coastal waters is an increasingly important source of disturbance that has the potential to make marine assemblages more susceptible to biotic invasion. The project will determine if pollution events facilitate the colonisation, persistence and spread of non-native species and how initial a ....Do pollution events facilitate biotic invasion in marine systems? This project aims to determine whether pollution affects the biological resistance of assemblages to invasion. The discharge of toxicants into coastal waters is an increasingly important source of disturbance that has the potential to make marine assemblages more susceptible to biotic invasion. The project will determine if pollution events facilitate the colonisation, persistence and spread of non-native species and how initial assemblage diversity modifies this response. The generality of several important ecological hypotheses developed in plant communities are tested in marine systems for the first time and extended to include the role of toxic disturbances.Read moreRead less
Drought and Salinity Tolerance in Metal Hyperaccumulating Plants: A Functional Role for the Metals? A few plant species can ?hyperaccumulate? metal ions to 100-1000 times the concentrations seen in ?normal? plants. Just why these plants have evolved such an extreme response to metalliferous soils remains an enigma. Many of the hyperaccumulators so far described are endemic to xeric environments, or saline soils prone to rapid drying. We hypothesize that the metals might act as osmotica, enha ....Drought and Salinity Tolerance in Metal Hyperaccumulating Plants: A Functional Role for the Metals? A few plant species can ?hyperaccumulate? metal ions to 100-1000 times the concentrations seen in ?normal? plants. Just why these plants have evolved such an extreme response to metalliferous soils remains an enigma. Many of the hyperaccumulators so far described are endemic to xeric environments, or saline soils prone to rapid drying. We hypothesize that the metals might act as osmotica, enhancing plant survival during water stress. This will be tested for Australian native and non-native hyperaccumulator plants. The study will clarify our understanding of the evolutionary significance of hyperaccumulation, and has important applications for extracting metals from contaminated soils.Read moreRead less
Understanding marine migratory connectivity for more sustainable oceans. Ocean basin-scale migrations of iconic sea turtles, marine mammals, seabirds, and fish expose them to multiple stressors and governance regimes, leading to gaps in management and population declines. The project aims to deliver the methods and evidence base of cross-taxa migratory connectivity that is essential to support the
conservation of these species. Expected outcomes include comprehensive and integrated models of mig ....Understanding marine migratory connectivity for more sustainable oceans. Ocean basin-scale migrations of iconic sea turtles, marine mammals, seabirds, and fish expose them to multiple stressors and governance regimes, leading to gaps in management and population declines. The project aims to deliver the methods and evidence base of cross-taxa migratory connectivity that is essential to support the
conservation of these species. Expected outcomes include comprehensive and integrated models of migratory connectivity, conservation theory development, and new methods that allow incorporation of migratory connectivity in conservation planning. Benefits include: a cross-taxa baseline that will enable Australia to measure environmental change in marine migratory connectivity for the first time.Read moreRead less
Understanding biodiversity by experimental analysis of links between physical, chemical and biological properties of intertidal sediments. The coastal zone accounts for 38 % of total environmental services, estimated as $12 trillion per year. Over 90 % of current development and 80 % of Australians are found within 50 km of the coast, putting enormous pressure on these habitats. Intertidal/shallow subtidal sediments are the most extensive and productive (biologically and economically) coastal ....Understanding biodiversity by experimental analysis of links between physical, chemical and biological properties of intertidal sediments. The coastal zone accounts for 38 % of total environmental services, estimated as $12 trillion per year. Over 90 % of current development and 80 % of Australians are found within 50 km of the coast, putting enormous pressure on these habitats. Intertidal/shallow subtidal sediments are the most extensive and productive (biologically and economically) coastal habitats, supporting much of Australia's unique biodiversity. Their functioning depends on complex interactions among physical, chemical and biotic processes, yet is largely unknown. Understanding these processes is crucial for coastal planning and management, to minimise habitat-loss and retain biodiversity in these important habitats.Read moreRead less