A paradigm shift for predictions of freshwater harmful cyanobacteria blooms. This project aims to advance model predictions to generate novel insights into the triggers of freshwater harmful cyanobacteria blooms. Current models are poorly adapted for this purpose because they fail to account for antecedent environmental forcing. The project is expected to create new knowledge of cyanobacteria dynamics from simulating the adaptive responses of individual cyanobacteria cells, colonies or filaments ....A paradigm shift for predictions of freshwater harmful cyanobacteria blooms. This project aims to advance model predictions to generate novel insights into the triggers of freshwater harmful cyanobacteria blooms. Current models are poorly adapted for this purpose because they fail to account for antecedent environmental forcing. The project is expected to create new knowledge of cyanobacteria dynamics from simulating the adaptive responses of individual cyanobacteria cells, colonies or filaments to temperature, light and nutrient history. Three field studies will be used to validate a new individual based model. The outcomes of this project will be valuable for managing freshwater ecosystems that are increasingly subject to blooms in a warming climate, and for testing suitable mitigation and control strategies.Read moreRead less
Resolving the threat of ocean deoxygenation to coral resilience. This project aims to uncover the role low oxygen plays in shaping healthy corals over space and time. Climate change and land use development are rapidly deoxygenating shallow water coral reefs, yet we have no knowledge of how less oxygen availability affects critical life history factors that govern coral resilience: growth, reproduction, and stress tolerance. This project unites a multidisciplinary team of experts to, for the fir ....Resolving the threat of ocean deoxygenation to coral resilience. This project aims to uncover the role low oxygen plays in shaping healthy corals over space and time. Climate change and land use development are rapidly deoxygenating shallow water coral reefs, yet we have no knowledge of how less oxygen availability affects critical life history factors that govern coral resilience: growth, reproduction, and stress tolerance. This project unites a multidisciplinary team of experts to, for the first time, couple advanced oxygen sensing, metabolic physiology, coral reproductive and stress biology to transform our understanding of oxygen thresholds that are diagnostic of reduced coral competitive fitness across life stages (adults, juveniles, larvae), needed to improve coral reef ecosystem management.Read moreRead less
Diagnosing coral health tipping points under accelerating coastal hypoxia. This project aims to unlock the role hypoxia plays in shaping the healthy functioning of corals over space and time. Climate change and land use development are rapidly deoxygenating shallow water coral reefs and amplifying hypoxia exposure, yet we have no knowledge of the oxygen thresholds that sustain ‘normal’ coral functioning, or the mechanisms corals’ employ to tolerate hypoxia. This project will couple advanced oxyg ....Diagnosing coral health tipping points under accelerating coastal hypoxia. This project aims to unlock the role hypoxia plays in shaping the healthy functioning of corals over space and time. Climate change and land use development are rapidly deoxygenating shallow water coral reefs and amplifying hypoxia exposure, yet we have no knowledge of the oxygen thresholds that sustain ‘normal’ coral functioning, or the mechanisms corals’ employ to tolerate hypoxia. This project will couple advanced oxygen sensing, metabolic physiology and functional genomics techniques to transform our understanding of how corals and their associated microbial communities respond to reduced oxygen conditions, which is essential to improve coral reef ecosystem management.Read moreRead less
Climate change, larval dispersal and patterns of connectivity in coral metapopulations. Patterns of connectivity among coral populations are virtually unknown and these patterns are likely to change with changing climate. This project will test how temperature and pH will change patterns of coral dispersal in order to assist the design of an effective marine reserve network throughout the Great Barrier Reef.
Evolution of palaeoenvironments on the volcanic landscapes of West New Britain, P.N.G. This research will define and explain the responses of environmental processes to catastrophic vulcanism in West New Britain (P.N.G.) during the last 10,000 years. It will provide a crucial perspective to our understanding of past human-landscape relationships, thus filling an important gap in models, of social response to environmental conditions, which are merging from current archaeological and palaeoenviro ....Evolution of palaeoenvironments on the volcanic landscapes of West New Britain, P.N.G. This research will define and explain the responses of environmental processes to catastrophic vulcanism in West New Britain (P.N.G.) during the last 10,000 years. It will provide a crucial perspective to our understanding of past human-landscape relationships, thus filling an important gap in models, of social response to environmental conditions, which are merging from current archaeological and palaeoenvironmental research. The project will develop predictive models for environmental recovery under various conditions. The close relationship between this research and the ground breaking regional archaeological study allows this unique case study to contribute to a global discussion of past human-landscape relationships.Read moreRead less
Creating coolspots: eco-engineering heat-resistant intertidal communities. This project aims to identify structural characteristics of marine intertidal habitat patches, formed by seaweeds and shellfish, that protect associated species from thermal extremes. This project will generate new knowledge about how thermally sensitive intertidal species can persist in stressful environments. Expected outcomes of this project
include new approaches for building heat-tolerant ecological communities on co ....Creating coolspots: eco-engineering heat-resistant intertidal communities. This project aims to identify structural characteristics of marine intertidal habitat patches, formed by seaweeds and shellfish, that protect associated species from thermal extremes. This project will generate new knowledge about how thermally sensitive intertidal species can persist in stressful environments. Expected outcomes of this project
include new approaches for building heat-tolerant ecological communities on coastal infrastructure, and improved tools for predicting the response of intertidal seaweeds and animals to environmental change. The results of this project will benefit coastal management by identifying conservation and rehabilitation strategies that maximise the
resilience of coastal ecosystems to environmental change.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
Do costs of dispersal reduce connectivity in marine invertebrate populations? Current approaches to marine management - designing marine reserves, understanding pest incursions, and managing fisheries, acknowledge that marine animals exist in isolated local populations, connected by dispersal. Dispersal is crucial for local populations to persist or be managed sustainably, but our understanding remains poor and often limits our management. Most current approaches to estimating connectivity are ....Do costs of dispersal reduce connectivity in marine invertebrate populations? Current approaches to marine management - designing marine reserves, understanding pest incursions, and managing fisheries, acknowledge that marine animals exist in isolated local populations, connected by dispersal. Dispersal is crucial for local populations to persist or be managed sustainably, but our understanding remains poor and often limits our management. Most current approaches to estimating connectivity are adequate only if all dispersers are equally successful at establishing. Dispersal, however, is risky or costly, and we propose that these costs reduce the success of colonists from more distant populations. If this is correct, persistence of local populations may rely disproportionately on other nearby local populations.Read moreRead less
Post-settlement mortality as a filter for variable settlement in marine invertebrates. Most marine organisms have a planktonic dispersive stage. Recruitment from this stage into adult populations is a key process. Variations in recruitment affect our ability to manage fisheries, plan national parks, and predict environmental impacts. Our ability to understand variation in recruitment is limited by our poor understanding of one key component of recruitment, post-settlement mortality. I will t ....Post-settlement mortality as a filter for variable settlement in marine invertebrates. Most marine organisms have a planktonic dispersive stage. Recruitment from this stage into adult populations is a key process. Variations in recruitment affect our ability to manage fisheries, plan national parks, and predict environmental impacts. Our ability to understand variation in recruitment is limited by our poor understanding of one key component of recruitment, post-settlement mortality. I will take several common, economically important, marine invertebrates, and determine how strongly post-settlement mortality affects overall recruitment. By looking at several species, I will be able to identify general patterns applicable to a wider range of species.Read moreRead less
Growing up with global change. This project aims to quantify how native bird populations will respond to global warming. The project will investigate how vulnerable nestling birds are to high temperatures, and the impact of early-life heat stress on adult performance and fitness in the wild. Although growing animals are most sensitive to heat, and stress during early-life often has irreversible negative effects, we know very little about long-term consequences of early-life heat stress. The inte ....Growing up with global change. This project aims to quantify how native bird populations will respond to global warming. The project will investigate how vulnerable nestling birds are to high temperatures, and the impact of early-life heat stress on adult performance and fitness in the wild. Although growing animals are most sensitive to heat, and stress during early-life often has irreversible negative effects, we know very little about long-term consequences of early-life heat stress. The intended outcomes will increase our capacity to predict impacts of climate warming before population declines become evident. Improved predictions are beneficial to identify urgent threats and optimise conservation efforts.Read moreRead less