Predicting the causes and consequences of plant invasions. Invasive plants are one of the most costly and significant environmental threats in Australia. To deal with this threat we need to understand how and why certain plant species are able to invade into and dominate native communities. The aim of this project is to uncover the rules that govern this environmental threat. The project endeavours to use theory to predict the outcomes that would be observed given different underlying rules, and ....Predicting the causes and consequences of plant invasions. Invasive plants are one of the most costly and significant environmental threats in Australia. To deal with this threat we need to understand how and why certain plant species are able to invade into and dominate native communities. The aim of this project is to uncover the rules that govern this environmental threat. The project endeavours to use theory to predict the outcomes that would be observed given different underlying rules, and then test these predictions with field experiments. By uncovering the rules that govern invasions, this project could provide fundamental knowledge to assist in managing the environmental threat posed by new and emerging weeds.Read moreRead less
Multitrophic interactions drive diversity-ecosystem function relationships. Soil communities, among the most abundant and diverse in nature are responsible for many critical ecosystem functions, including nutrient cycling and climate regulation. This project will determine whether consideration and quantification of interactions between different biotic communities – specifically among plants, soil microbes and animals, within and across trophic levels - can address underlying shortcomings in pr ....Multitrophic interactions drive diversity-ecosystem function relationships. Soil communities, among the most abundant and diverse in nature are responsible for many critical ecosystem functions, including nutrient cycling and climate regulation. This project will determine whether consideration and quantification of interactions between different biotic communities – specifically among plants, soil microbes and animals, within and across trophic levels - can address underlying shortcomings in predictions from classical biodiversity-ecosystem function theory. By advancing understanding of biological complexity and its impacts on ecosystem functions, the project will provide a unifying framework for understanding variation in ecosystem functions across scales, ecosystem types and multiple environmental disturbances.Read moreRead less
Ecological forecasts of species response to fire, drought and heatwaves. This project will advance ecosystem forecasting by accounting for how legacy effects from extreme environmental events – prolonged droughts, floods, heatwaves and fires – persist into future years in vulnerable dryland ecosystems. As highly stressed environments are expected to leave increasingly large impacts on flora and fauna and exacerbate desertification, answers are urgently needed to understand and mitigate these imp ....Ecological forecasts of species response to fire, drought and heatwaves. This project will advance ecosystem forecasting by accounting for how legacy effects from extreme environmental events – prolonged droughts, floods, heatwaves and fires – persist into future years in vulnerable dryland ecosystems. As highly stressed environments are expected to leave increasingly large impacts on flora and fauna and exacerbate desertification, answers are urgently needed to understand and mitigate these impacts. This project will foster new appreciation of ecosystem features that build resilience to change, or that lead to collapse. Benefits include better forecasting tools to manage ecosystems at risk, improved security of biodiversity and food production in Australian rangelands, and training of early career researchers.Read moreRead less
Causes and consequences of biogeochemical mismatches during drought. This project aims to provide improved understanding of biogeochemical cycling. Drought is one of the main threats to Earth’s ecosystems, but our ability to predict the consequences of drought remain limited. There is strong evidence that drought impacts critical carbon and nutrient cycles, with substantial impacts on ecosystem functioning. This project will provide insights into carbon, nitrogen and phosphorous cycles essential ....Causes and consequences of biogeochemical mismatches during drought. This project aims to provide improved understanding of biogeochemical cycling. Drought is one of the main threats to Earth’s ecosystems, but our ability to predict the consequences of drought remain limited. There is strong evidence that drought impacts critical carbon and nutrient cycles, with substantial impacts on ecosystem functioning. This project will provide insights into carbon, nitrogen and phosphorous cycles essential to generalise patterns of biogeochemical cycling under current and future conditions. The project will assist scientists, policymakers and landholders make better-informed management decisions to reduce the risks of drought impacts on ecosystem functioning.Read moreRead less
Rhizosphere mediation of soil greenhouse gas fluxes with climate change. Increasingly extreme heat waves, droughts and floods contribute major uncertainties in predicting natural land-based climate change mitigation. This project will quantify current and future greenhouse gas absorption in a managed grassland ecosystem, and the new knowledge will contribute to carbon emissions offsets in climate change accounting schemes. We will conduct this research using a manipulative field experiment, cont ....Rhizosphere mediation of soil greenhouse gas fluxes with climate change. Increasingly extreme heat waves, droughts and floods contribute major uncertainties in predicting natural land-based climate change mitigation. This project will quantify current and future greenhouse gas absorption in a managed grassland ecosystem, and the new knowledge will contribute to carbon emissions offsets in climate change accounting schemes. We will conduct this research using a manipulative field experiment, controlled laboratory incubations, microbial gene analysis and mechanistic modelling to provide new insights into future potential climate change mitigation by soils.Read moreRead less
Do microbial and plant diversity interact to regulate multifunctionality? This project aims to quantify the relative contribution of plant and microbial communities and their interactions on the rate, stability and resilience of ecosystem functions. Plant and soil microbial communities contribute to the functioning of terrestrial ecosystems, driving key processes such as carbon and nutrient cycling. This project will adapt established theories which indicate that greater plant diversity improves ....Do microbial and plant diversity interact to regulate multifunctionality? This project aims to quantify the relative contribution of plant and microbial communities and their interactions on the rate, stability and resilience of ecosystem functions. Plant and soil microbial communities contribute to the functioning of terrestrial ecosystems, driving key processes such as carbon and nutrient cycling. This project will adapt established theories which indicate that greater plant diversity improves ecosystem functions, stability and recovery. The expected outcome is a unifying framework for determining variation in functions across different ecosystem types and environmental disturbance such as rapid climate change.The insight gained into vulnerable ecosystems will help stakeholders (government, conservation, land management) to prioritise the focus on conservation and reduce risks to ecosystem services.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180100570
Funder
Australian Research Council
Funding Amount
$365,058.00
Summary
Cyanobacterial bio-encapsulation for restoring degraded drylands. This project aims to discover the ecological and functional roles of cyanobacteria in drylands, and develop new technologies for their broad application in large-scale ecosystem restoration. The global demand for landscape-scale restoration requires novel approaches to deliver on the promise of reinstating healthy, sustainable, and biodiverse ecosystems. This project will harness next-generation DNA sequencing to select beneficial ....Cyanobacterial bio-encapsulation for restoring degraded drylands. This project aims to discover the ecological and functional roles of cyanobacteria in drylands, and develop new technologies for their broad application in large-scale ecosystem restoration. The global demand for landscape-scale restoration requires novel approaches to deliver on the promise of reinstating healthy, sustainable, and biodiverse ecosystems. This project will harness next-generation DNA sequencing to select beneficial cyanobacteria for incorporation into emerging seed enhancement technologies. The project will deliver innovative and cost-effective tools to overcome barriers to seedling recruitment and plant survival, and enhance the functionality of degraded dryland ecosystems. This will contribute to long-term cost savings to the Australian economy through reduced spending on environmental issues such as salinity, erosion, acidification and poor water quality.Read moreRead less
Ecohydrologic functioning of ephemeral streams. This project aims to increase understanding of how surface-groundwater interactions sustain vegetation associated with ephemeral streams. One of the biggest problems faced by mining and regional development in arid regions is how to protect ecological and heritage values of ephemeral streams by minimising impacts of water abstraction and surplus discharge. The project will use environmental tracers, coupled with assessment of vegetation water use a ....Ecohydrologic functioning of ephemeral streams. This project aims to increase understanding of how surface-groundwater interactions sustain vegetation associated with ephemeral streams. One of the biggest problems faced by mining and regional development in arid regions is how to protect ecological and heritage values of ephemeral streams by minimising impacts of water abstraction and surplus discharge. The project will use environmental tracers, coupled with assessment of vegetation water use and numerical modelling, to assess resilience of ephemeral streams to changes in flows resulting from mining activities and climate-related shifts in recharge. Expected outcomes of the project include providing appropriate context for evaluating and adapting management to conserve scarce water resources. This project should significantly contribute to the sustainable management of both mineral and groundwater resources.Read moreRead less
Living on the edge: how do Australian plants cope with extreme temperature? Of all the climatic factors determining species distributions, temperature is arguably the most important. It is extremes – rather than averages – that drive species evolution. So it is concerning that although extreme temperature events are increasing in frequency and intensity little is known about the breadth of thermal tolerance of plants from extreme environments. This information is crucial to understand species di ....Living on the edge: how do Australian plants cope with extreme temperature? Of all the climatic factors determining species distributions, temperature is arguably the most important. It is extremes – rather than averages – that drive species evolution. So it is concerning that although extreme temperature events are increasing in frequency and intensity little is known about the breadth of thermal tolerance of plants from extreme environments. This information is crucial to understand species distribution and survival under future climate regimes. This project will ascertain the thermal breadth of Australian species growing in situ and under controlled environments. The project will contribute to development of effective conservation, restoration and rehabilitation plans for Australian native plant communities. Read moreRead less
Root distribution and salinity and soil water dynamics in a chenopod shrubland: implications for restoration ecology. This project investigates the dynamics of water and roots in soils in arid lands to inform revegetation practitioners on the best approaches to reconstruct soils and vegetation after mineral extraction. The project will also provide basic information on the function of chenopod shrublands in arid southern Australia that may be affected by climate change.