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Photosynthetic traits as “key performance indicators” of coral health. The objective of this project is to advance knowledge on the healthy functioning of the coral–algal symbiosis, which defines the response of coral reef ecosystems to worldwide environmental change. Current approaches to address this problem have linked coral health to algal symbiont diversity but have been unable to resolve the fundamental symbiont functional traits that govern this link – the “key performance indicators (KPI ....Photosynthetic traits as “key performance indicators” of coral health. The objective of this project is to advance knowledge on the healthy functioning of the coral–algal symbiosis, which defines the response of coral reef ecosystems to worldwide environmental change. Current approaches to address this problem have linked coral health to algal symbiont diversity but have been unable to resolve the fundamental symbiont functional traits that govern this link – the “key performance indicators (KPIs)”. This project plans to couple advanced physiological and functional genomics techniques to transform our understanding of how algal symbiont metabolic KPIs regulate coral growth and stress susceptibility. This may provide new diagnostic capability for the assessment of coral health and may enable us to improve coral reef ecosystem management.Read moreRead less
Blue carbon potential of the Great Southern Reef. As one of Australia’s largest vegetated coastal ecosystems, kelp forests provide substantial climate mitigation opportunities. Although kelp carbon is ubiquitous in the deep ocean, the mechanism of transport and amount of kelp carbon reaching deep sinks remains largely unknown, significantly hampering their inclusion in ocean carbon budgets and mitigation action. We will use Australia-wide field data on kelp export, cross-shelf measurements of tr ....Blue carbon potential of the Great Southern Reef. As one of Australia’s largest vegetated coastal ecosystems, kelp forests provide substantial climate mitigation opportunities. Although kelp carbon is ubiquitous in the deep ocean, the mechanism of transport and amount of kelp carbon reaching deep sinks remains largely unknown, significantly hampering their inclusion in ocean carbon budgets and mitigation action. We will use Australia-wide field data on kelp export, cross-shelf measurements of transport and decay, coastal ocean circulation and future distribution models to vastly improve estimates of kelp carbon transfer to deep ocean sinks. Our comprehensive data-driven assessment of kelp carbon sequestration aims to uncover the carbon sink capacity of seaweed forests now and in the futureRead moreRead less
Identifying potential trade-offs of adapting to climate change. Climate change and marine heatwaves introduce strong, directional selection for heat tolerance which, in turn, alters the genetic composition and diversity of marine species. While this may facilitate adaptation to warmer conditions, reduced genetic diversity may limit resilience or cause maladaptation to additional stressors. This project will focus on habitat-forming kelps and will aim to both assess the negative consequences of r ....Identifying potential trade-offs of adapting to climate change. Climate change and marine heatwaves introduce strong, directional selection for heat tolerance which, in turn, alters the genetic composition and diversity of marine species. While this may facilitate adaptation to warmer conditions, reduced genetic diversity may limit resilience or cause maladaptation to additional stressors. This project will focus on habitat-forming kelps and will aim to both assess the negative consequences of rapid selection and to disentangle the mechanisms of climate adaptation. Through a powerful combination of controlled experiments on known genotypes and cutting-edge transcriptomic approaches, this project will transform our understanding of the adaptability of foundation species in a rapidly changing ocean.
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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
Global threats to kelp forests from heatwaves, herbivores and diseases. This project aims to understand the mechanisms behind climate-mediated declines in kelp. Ocean warming causes the collapse of valuable temperate kelp forests globally and on both sides of Australia, but it is unknown if this is because of direct physiological effects from temperature or the indirect effects of changes in species interactions. This project will compare the direct effects of marine heatwaves to the indirect ef ....Global threats to kelp forests from heatwaves, herbivores and diseases. This project aims to understand the mechanisms behind climate-mediated declines in kelp. Ocean warming causes the collapse of valuable temperate kelp forests globally and on both sides of Australia, but it is unknown if this is because of direct physiological effects from temperature or the indirect effects of changes in species interactions. This project will compare the direct effects of marine heatwaves to the indirect effects of range-shifting tropical herbivores and pathogens for the kelp forests of the Great Southern Reef, one of Australia’s largest coastal ecosystems. This project will generate knowledge underpinning adaptation strategies for these critical ecosystems, and could enhance the capacity to respond to degradation of these natural assets.Read moreRead less
Marine heatwaves drive loss of genetic diversity and selection in kelps. This project aims to unravel where and when marine heatwaves drive loss of genetic diversity and rapid directional selection in kelp forests. Although the devastating ecological impacts of marine heatwaves are well studied, empirical understanding of how marine heatwaves impact underlying evolutionary processes including adaptive capacity and resilience is lacking. This research will use a powerful combination of innovative ....Marine heatwaves drive loss of genetic diversity and selection in kelps. This project aims to unravel where and when marine heatwaves drive loss of genetic diversity and rapid directional selection in kelp forests. Although the devastating ecological impacts of marine heatwaves are well studied, empirical understanding of how marine heatwaves impact underlying evolutionary processes including adaptive capacity and resilience is lacking. This research will use a powerful combination of innovative heatwave analyses, cutting-edge genomics and physiological experiments to fill these knowledge gaps and represents a step change in our understanding of how kelp respond and adapt in multi-stressor seascapes. Results will pave the way for development of novel mitigation strategies to future-proof marine management. Read moreRead less
Restoration of Sydney's key habitat forming seaweed forests. Restoration of Sydney's key habitat forming seaweed forests. This project aims to restore a key habitat forming-seaweed and its ecosystem, by integrating experimental ecology, population genetics, eco-engineering and restoration ecology. Habitat degradation causes worldwide loss of biodiversity and ecosystem function, increasingly needing active restoration of ecosystems. However, restoration efforts often lack the critical ecological ....Restoration of Sydney's key habitat forming seaweed forests. Restoration of Sydney's key habitat forming seaweed forests. This project aims to restore a key habitat forming-seaweed and its ecosystem, by integrating experimental ecology, population genetics, eco-engineering and restoration ecology. Habitat degradation causes worldwide loss of biodiversity and ecosystem function, increasingly needing active restoration of ecosystems. However, restoration efforts often lack the critical ecological understanding for success, largely ignore major habitats, and in marine systems rarely happen at the scale of the degradation. This innovative approach, could be adopted globally to restore these crucial marine habitats. Anticipated outcomes are the re-establishment of commercially harvestable resources and new tools for active conservation of critical marine habitats.Read moreRead less
Quantifying kelp carbon and nutrient flows for nature-based solutions . This fellowship aims to resolve carbon removal and nutrient mitigation potential of Australia’s kelp forests now and in future. It will create new understanding of the ecosystem services provided by the Great Southern Reef, and the capacity of kelp forests to provide nature-based solutions to reduce emissions and improve coastal water quality. Using a combination of global models and ecological experiments on kelp forests an ....Quantifying kelp carbon and nutrient flows for nature-based solutions . This fellowship aims to resolve carbon removal and nutrient mitigation potential of Australia’s kelp forests now and in future. It will create new understanding of the ecosystem services provided by the Great Southern Reef, and the capacity of kelp forests to provide nature-based solutions to reduce emissions and improve coastal water quality. Using a combination of global models and ecological experiments on kelp forests and their replacement ecosystem states, the fellowship will predict changes in function with warming. This information is critical to determine net ecosystem mitigation potential and will significantly advance our understanding of the potential of kelp forests to generate co-benefits while conserving biodiversity. Read moreRead less
Genes to ecosystems: drivers of resilience in underwater marine forests. This project seeks to determine if population connectivity and thermal stress limits the ecological performance and capacity for biological adaptation of seaweed forests to environmental change. The rates of warming in Australia’s temperate marine environments are among the fastest in the world, threatening seaweed forests that support rich marine life and generate substantial socioeconomic values. By integrating studies of ....Genes to ecosystems: drivers of resilience in underwater marine forests. This project seeks to determine if population connectivity and thermal stress limits the ecological performance and capacity for biological adaptation of seaweed forests to environmental change. The rates of warming in Australia’s temperate marine environments are among the fastest in the world, threatening seaweed forests that support rich marine life and generate substantial socioeconomic values. By integrating studies of connectivity among seaweed forests along replicate coastlines on both sides of the Australian continent, with field and breeding experiments, this project expects to expose the role of genetic diversity in mediating ecological resilience to rapid environmental change.Read moreRead less
New approaches to measuring the composition and nutrient status of single phytoplankton cells. Phytoplankton support 90% of aquatic food webs, and are responsible for nearly half of global primary productivity. Conversely, blooms of some phytoplankton, often associated with excess nutrients, can cause major environmental problems, including fish kills and risks to human health. However, current methods for determining the nutrient status of phytoplankton are time consuming and ignore the complex ....New approaches to measuring the composition and nutrient status of single phytoplankton cells. Phytoplankton support 90% of aquatic food webs, and are responsible for nearly half of global primary productivity. Conversely, blooms of some phytoplankton, often associated with excess nutrients, can cause major environmental problems, including fish kills and risks to human health. However, current methods for determining the nutrient status of phytoplankton are time consuming and ignore the complexity of responses of different species in mixed populations. This project will develop new, rapid, ways of examining the nutrient condition of individual algal cells, which will be of considerable use to the water industry as well as to our understanding of aquatic ecology.Read moreRead less