Escalating the arms race: Understanding when and how trees get really tall. Australia's giant Eucalypt trees are an amazing phenomenon and resource; underpinning unique ecosystems, rich in timber, stored carbon, and animal habitat. While tree height generally arises via an evolutionary arms race for light, the race has escalated dramatically in some locations and species. Using a computational framework that simulates adaptation driven by size-structured competition, this project will quantify h ....Escalating the arms race: Understanding when and how trees get really tall. Australia's giant Eucalypt trees are an amazing phenomenon and resource; underpinning unique ecosystems, rich in timber, stored carbon, and animal habitat. While tree height generally arises via an evolutionary arms race for light, the race has escalated dramatically in some locations and species. Using a computational framework that simulates adaptation driven by size-structured competition, this project will quantify how distinct factors-including climate, recruitment, and disturbance-enhance the race for light and can thereby explain the origins of Australia's giant Eucalypt. With calibrated models of species evolution, coupled with targeted fieldwork and big data, this project clarifies key forces shaping present and future vegetation.Read moreRead less
Sexual conflict and the evolution of nuptial gifts. This project aims to understand how sexual conflict drives the evolution of “manipulative” nuptial gifts in male arthropods and how females respond to ingesting these gifts. Nuptial food gifts comprise materials (other than sperm) that are offered by males to females to consume at mating, and are an integral feature of the mating systems of a wide variety of arthropods. The project will study the decorated cricket, a species where males produce ....Sexual conflict and the evolution of nuptial gifts. This project aims to understand how sexual conflict drives the evolution of “manipulative” nuptial gifts in male arthropods and how females respond to ingesting these gifts. Nuptial food gifts comprise materials (other than sperm) that are offered by males to females to consume at mating, and are an integral feature of the mating systems of a wide variety of arthropods. The project will study the decorated cricket, a species where males produce a nuptial food gift that contains a cocktail of chemicals known to influence female reproduction when eaten. The project is expected to strengthen Australia’s international standing in evolutionary research and help train the next generation of evolutionary biologists.Read moreRead less
Silicon: a novel solution to reduce water use and pest damage in wheat. The project aims to improve Australian wheat production by increasing drought resilience and reducing reliance on pesticides. This is achieved by incorporating amorphous silicon (Si), an abundant national resource. Si uptake by wheat has been proven to alleviate stress from drought and pests, but mechanisms and agronomic feasibility remain to be fully assessed. The project will deliver a mechanistic understanding of how Si a ....Silicon: a novel solution to reduce water use and pest damage in wheat. The project aims to improve Australian wheat production by increasing drought resilience and reducing reliance on pesticides. This is achieved by incorporating amorphous silicon (Si), an abundant national resource. Si uptake by wheat has been proven to alleviate stress from drought and pests, but mechanisms and agronomic feasibility remain to be fully assessed. The project will deliver a mechanistic understanding of how Si alleviates stress in wheat, from gene to farm scale, providing cost-benefit analysis and a best–practice toolbox for implementation by farmers. Outcomes are anticipated to provide a cheaper and more environmentally sustainable solution to issues of water scarcity and yield losses to pests in Australia’s leading crop.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE230100141
Funder
Australian Research Council
Funding Amount
$444,300.00
Summary
Anticipating ecological shifts in subtropical marine ecosystems. This project aims to unravel the causes of abrupt ecological change in the subtropics and predict their future in warming seas. Uniting large-scale field observation and modelling in a novel multi-species framework, this project seeks to quantify how warming and species interactions combine to escalate change on subtropical reefs at different stages of tropicalisation. Expected outcomes include new insights into the factors that pr ....Anticipating ecological shifts in subtropical marine ecosystems. This project aims to unravel the causes of abrupt ecological change in the subtropics and predict their future in warming seas. Uniting large-scale field observation and modelling in a novel multi-species framework, this project seeks to quantify how warming and species interactions combine to escalate change on subtropical reefs at different stages of tropicalisation. Expected outcomes include new insights into the factors that promote stability or change along subtropical coasts in Australia and Japan, where the influx of tropical species already has dramatic consequences. By comparing dynamics in Australia with tropicalisation hotspots in Japan, this project expects to anticipate future ecological shifts and benefit strategic management.Read moreRead less
The costs and consequences of resistance to stress in microbial systems. The coexistence of antibiotic resistant and sensitive bacteria in microbial communities represents a paradox. Combining novel ecological models and competition experiments, this project aims to investigate how the pulsing of antibiotics and resources affects the coexistence of resistant and sensitive bacteria. This project expects to generate new knowledge into how the complex non-equilibrium dynamics of natural systems fee ....The costs and consequences of resistance to stress in microbial systems. The coexistence of antibiotic resistant and sensitive bacteria in microbial communities represents a paradox. Combining novel ecological models and competition experiments, this project aims to investigate how the pulsing of antibiotics and resources affects the coexistence of resistant and sensitive bacteria. This project expects to generate new knowledge into how the complex non-equilibrium dynamics of natural systems feeds back to regulate the spread of antibiotic resistance in microbial communities. This should advance our fundamental understanding of microbial competition, and provide a foundation for the development of new ecologically-aware strategies for managing resistance.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE240100272
Funder
Australian Research Council
Funding Amount
$475,234.00
Summary
Protecting oyster aquaculture from heatwaves and flooding rains . This project aims to grow our understanding of disease in oysters following extreme weather events such as heatwaves and floods. Working with industry partners, I will use field and lab-based experiments to determine the underlying causes of oyster mortality following extreme weather. Critically, this project will trial real solutions to reduce disease including selective breeding and co-culture of seaweeds. Expected outcomes incl ....Protecting oyster aquaculture from heatwaves and flooding rains . This project aims to grow our understanding of disease in oysters following extreme weather events such as heatwaves and floods. Working with industry partners, I will use field and lab-based experiments to determine the underlying causes of oyster mortality following extreme weather. Critically, this project will trial real solutions to reduce disease including selective breeding and co-culture of seaweeds. Expected outcomes include new knowledge on the causes of bacterial disease in aquaculture and real progress towards solutions to mitigate oyster disease following extreme weather events. This project expects to enable the iconic Australian oyster aquaculture industry to grow despite the extreme weather brought by climate change. Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE240101022
Funder
Australian Research Council
Funding Amount
$457,000.00
Summary
Linking movement and animal vision to uncover functions of dynamic colours. This project aims to address a fundamental biological question: what drives the extraordinary diversity of colours in nature? Using cutting-edge, interdisciplinary techniques, this project expects to link visual properties, movement and animal vision to discover functions of animal colouration, generating significant new insights for the fields of visual ecology, animal behaviour and camouflage. The outcomes of this proj ....Linking movement and animal vision to uncover functions of dynamic colours. This project aims to address a fundamental biological question: what drives the extraordinary diversity of colours in nature? Using cutting-edge, interdisciplinary techniques, this project expects to link visual properties, movement and animal vision to discover functions of animal colouration, generating significant new insights for the fields of visual ecology, animal behaviour and camouflage. The outcomes of this project include enhanced national and international collaboration and new tools for animal behaviour, perception and camouflage research. This work will benefit our understanding of vision, colour and the relationship between the two, with significant scope for bio-inspired solutions to sensor and image processing problems.Read moreRead less
Early-life climate sensitivity: direct and indirect mechanisms. This project aims to investigate how climate change threatens animal populations by determining the mechanisms causing DNA damage (short telomeres) in nestling birds growing up in hot conditions. Telomeres are biomarkers of individual life expectancy, and short telomeres in young birds predict a decline in future population viability. Our project aims to determine the importance for heat-induced telomere shortening of: (1) nestling ....Early-life climate sensitivity: direct and indirect mechanisms. This project aims to investigate how climate change threatens animal populations by determining the mechanisms causing DNA damage (short telomeres) in nestling birds growing up in hot conditions. Telomeres are biomarkers of individual life expectancy, and short telomeres in young birds predict a decline in future population viability. Our project aims to determine the importance for heat-induced telomere shortening of: (1) nestling heat stress responses; (2) inheritance of heat-shortened sperm telomeres; and (3) parental buffering of heat effects. Expected benefits include enhanced reliability of climate change predictions and improved ability to identify climate change mitigation strategies before population declines are evident.Read moreRead less
Diversity maintenance in patchy environments. This project aims to advance understanding of species coexistence and diversity maintenance in complex natural environments. Though diversity varies across patchy natural and human-created environments, the mechanistic drivers of these patterns remain poorly understood. This knowledge gap limits our ability to predict and manage responses of natural communities to environmental changes. Using data from threatened Western Australian wildflower communi ....Diversity maintenance in patchy environments. This project aims to advance understanding of species coexistence and diversity maintenance in complex natural environments. Though diversity varies across patchy natural and human-created environments, the mechanistic drivers of these patterns remain poorly understood. This knowledge gap limits our ability to predict and manage responses of natural communities to environmental changes. Using data from threatened Western Australian wildflower communities and novel ecological models of species coexistence, the project aims to deliver a mechanistic understanding of biological diversity, and provide fundamental knowledge needed to improve ecosystem management and restoration outcomes across Australia and globally.Read moreRead less
Understanding the survival of forests under drought . Droughts are predicted to become more extreme in the near future, with potentially devastating impacts on Australian forest ecosystems. This project aims to address key knowledge gaps in our understanding of how plants tolerate extreme drought stress and utilise this new knowledge to improve vegetation models suitable for assessing ecosystem vulnerability. We will use innovative experimental methodology to determine the processes by which wat ....Understanding the survival of forests under drought . Droughts are predicted to become more extreme in the near future, with potentially devastating impacts on Australian forest ecosystems. This project aims to address key knowledge gaps in our understanding of how plants tolerate extreme drought stress and utilise this new knowledge to improve vegetation models suitable for assessing ecosystem vulnerability. We will use innovative experimental methodology to determine the processes by which water transport breaks down in roots, stems and leaves and the mechanisms governing recovery from severe drought stress. The project will provide a deeper understanding of drought tolerance in trees, improved forecasting of risks to native vegetation, and enhanced management of native forest resources. Read moreRead less