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Switching partners: a driving force for tree productivity in a changing environment? Eucalypts take part in a mutually beneficial association with diverse communities of mycorrhizal fungi to satisfy nutrient demands. The fungi that eucalypts interact with change as they grow but the reasons for this shift are not known. To improve forestry management strategies, the project will determine why and how this shift occurs.
Unravelling soil carbon response to warming in fire-affected ecosystems. This project aims to reveal the continental pattern of soil carbon (C) response to warming in fire-affected ecosystems across Australia and to unravel the biogeochemical mechanisms underlying fire’s role in shaping the temperature sensitivity of soil respiration. Fire has modified over 40% of the Earth’s land surface and wildfire frequency is predicted to increase under global warming. This project expects to generate new k ....Unravelling soil carbon response to warming in fire-affected ecosystems. This project aims to reveal the continental pattern of soil carbon (C) response to warming in fire-affected ecosystems across Australia and to unravel the biogeochemical mechanisms underlying fire’s role in shaping the temperature sensitivity of soil respiration. Fire has modified over 40% of the Earth’s land surface and wildfire frequency is predicted to increase under global warming. This project expects to generate new knowledge on how fire influences soil-to-atmosphere C fluxes in a warmer climate using a multi-disciplinary approach. Expected outcomes include an enhanced capacity to predict the terrestrial ecosystem-to-atmosphere C fluxes and their feedbacks to climate under increasing frequency of fire using Earth-system models. Read moreRead less
Forecasting soil conditions. Not knowing where and how soil responds to climate change and human intervention compromises food, water, climate and energy security. Currently there is a lack of soil process knowledge and data infrastructure collectively causing significant uncertainty and risk in the assessments of key threats to soil. The project devises a transformational digital soil model to forecast where and how soil pH and carbon will change in New South Wales. Tested on sites within Au ....Forecasting soil conditions. Not knowing where and how soil responds to climate change and human intervention compromises food, water, climate and energy security. Currently there is a lack of soil process knowledge and data infrastructure collectively causing significant uncertainty and risk in the assessments of key threats to soil. The project devises a transformational digital soil model to forecast where and how soil pH and carbon will change in New South Wales. Tested on sites within Australia, the model will give insight on the drivers of change and will provide a unique analysis of the effect of climate change and land management on the dynamics of soil.Read moreRead less
Dynamic soil landscape carbon modelling. Soil is the largest terrestrial store of carbon. This project will enhance our understanding of the causes and controls of spatial and temporal variations of soil carbon which is crucial for managing climate change, food water and energy security and for maintenance of biodiversity.
A general soil spatial scaling theory. Soil diversity is crucial for maintenance of sustainable ecosystems. Soil varies on a continuum from microbial habitats to fields, regions, continents and the globe. This project will take a unifying approach to derive a general spatial scaling theory that will allow us to estimate the likely behaviour of soil properties at all scales. Understanding the scaling behaviour of soil means one can be certain about describing the changes in relationships between ....A general soil spatial scaling theory. Soil diversity is crucial for maintenance of sustainable ecosystems. Soil varies on a continuum from microbial habitats to fields, regions, continents and the globe. This project will take a unifying approach to derive a general spatial scaling theory that will allow us to estimate the likely behaviour of soil properties at all scales. Understanding the scaling behaviour of soil means one can be certain about describing the changes in relationships between soil properties and processes. It will enhance the ability to monitor soil property changes through time, essential for gauging effects of climate change and achieving food security. Read moreRead less
Global space-time soil carbon assessment. Soil carbon is a key component of functional ecosystems and is crucial for food, water and energy security, and for climate change mitigation. The project will contribute to global understanding of soil carbon and its management for sustainable wellbeing.
Phosphorus cycling and adaptation of soil microbes to P availability . This project aims to determine how soil microbial communities adapt to phosphorus availability, and how the breakdown of microbial biomass sustains phosphorus demand. Using some of the most globally P-impoverished soils, the project expects to uncover how cellular composition of microbial populations is shaped by phosphorus availability, and feedbacks between cellular composition of microbes and phosphorus availability. Expec ....Phosphorus cycling and adaptation of soil microbes to P availability . This project aims to determine how soil microbial communities adapt to phosphorus availability, and how the breakdown of microbial biomass sustains phosphorus demand. Using some of the most globally P-impoverished soils, the project expects to uncover how cellular composition of microbial populations is shaped by phosphorus availability, and feedbacks between cellular composition of microbes and phosphorus availability. Expected outcomes include better understanding of factors determining phosphorus availability, and a new analytical toolkit for tracing pools and fluxes of organic P in soils. Overall, these should provide significant benefit to the global effort in understanding how phosphorus shapes soil function.Read moreRead less
Are Secreted Proteins determinants of host range in ectomycorrhizal fungi? This project aims to understand the role of small secreted proteins in governing symbiotic fungal-host compatibility and determine the impact of environmental change on the role of these proteins. Using innovative approaches, this project expects to achieve these goals using comparative genomics, transcriptomic analyses and functional characterisation of these proteins within a keystone Australian ectomycorrhizal fungus. ....Are Secreted Proteins determinants of host range in ectomycorrhizal fungi? This project aims to understand the role of small secreted proteins in governing symbiotic fungal-host compatibility and determine the impact of environmental change on the role of these proteins. Using innovative approaches, this project expects to achieve these goals using comparative genomics, transcriptomic analyses and functional characterisation of these proteins within a keystone Australian ectomycorrhizal fungus. It is anticipated that outcomes of this project will add a critical component to the global effort in understanding the role of soil microbes in supporting the health of plants experiencing a variety of climactic conditions. This could provide significant benefits to informing management practices of forest ecosystems.Read moreRead less
To what extent does fire affect karst processes? Burning questions for fire management. Fire management is of crucial importance for both asset protection and ecosystem management. However, the effects of fire in karst systems is poorly understood. This project will undertake experiments to determine the effects of fire on surface and subsurface processes, including stalagmite formation, that can be used to improve fire management policy.
Fires, black carbon, greenhouse gas emissions and the carbon balance of southern sclerophyll forests. Ecologically sustainable forest management requires an understanding of the role of fire in the carbon balance of native forests, and in Australia's overall carbon balance. Fires are crucial to both this carbon balance and to the ecology of the forests. This project will help forest managers make decisions about using prescribed fire to manage fuels while at the same time managing carbon. An ....Fires, black carbon, greenhouse gas emissions and the carbon balance of southern sclerophyll forests. Ecologically sustainable forest management requires an understanding of the role of fire in the carbon balance of native forests, and in Australia's overall carbon balance. Fires are crucial to both this carbon balance and to the ecology of the forests. This project will help forest managers make decisions about using prescribed fire to manage fuels while at the same time managing carbon. An aim of management is to identify fire regimes that will optimise the carbon outcome as well as provide protection to life and property. This project will help managers meet that aim by developing a quantitative understanding of how much stable, black carbon (charcoal) is produced and how it affects other soil processes.Read moreRead less