Reserving nitrogen in soils through microbial nitrate reduction to ammonium. This project aims to identify those microbes able to transform nitrate to ammonium and thus increase soil nitrogen conservation. More than 50 per cent of the nitrogen in fertilisers applied to soils is lost into the environment, which is both a financial loss to farmers and a main anthropogenic source of nitrogen pollution. Some microbes can transform nitrate into ammonium through dissimilatory reduction (DNRA) and thus ....Reserving nitrogen in soils through microbial nitrate reduction to ammonium. This project aims to identify those microbes able to transform nitrate to ammonium and thus increase soil nitrogen conservation. More than 50 per cent of the nitrogen in fertilisers applied to soils is lost into the environment, which is both a financial loss to farmers and a main anthropogenic source of nitrogen pollution. Some microbes can transform nitrate into ammonium through dissimilatory reduction (DNRA) and thus increase soil nitrogen retention. However, the DNRA process and the responsible microbial groups remain largely unknown. This project plans to use isotope tracing and biomolecular approaches to identify those DNRA microbial groups and elucidate the DNRA reaction process. The findings may support the use of DNRA to improve soil nitrogen.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150100870
Funder
Australian Research Council
Funding Amount
$342,000.00
Summary
Unravelling the microbial mechanisms of soil nitrous oxide emissions. Soil ecosystems are believed to be the most dominant sources of global nitrous oxide emissions. However, mitigations of nitrous oxide are strongly hindered by lack of knowledge on microbial mechanisms underpinning its production. This project aims to integrate a range of advanced approaches to identify the key nitrogen cycling genes as best predictors of nitrous oxide in field studies, to disentangle relative contribution of m ....Unravelling the microbial mechanisms of soil nitrous oxide emissions. Soil ecosystems are believed to be the most dominant sources of global nitrous oxide emissions. However, mitigations of nitrous oxide are strongly hindered by lack of knowledge on microbial mechanisms underpinning its production. This project aims to integrate a range of advanced approaches to identify the key nitrogen cycling genes as best predictors of nitrous oxide in field studies, to disentangle relative contribution of microbial pathways to nitrous oxide in glasshouse and microcosm studies, and to validate these findings across various land-use types in Australia and China. This will provide a critical framework incorporating microbial data into the nitrous oxide prediction models for better mitigation of greenhouse gas emissions.Read moreRead less
An experimentally-validated thermo-hydro-mechanical theory for waste containment lining systems. Geosynthetic clay liners are engineering systems that are widely used around the world to protect groundwater from municipal, industrial and mining contaminants. The project will conduct cutting-edge experimental, theoretical and computational research leading to a major improvement in their short-term and long-term performances.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE200100022
Funder
Australian Research Council
Funding Amount
$580,000.00
Summary
New frontier in Geoscience: A tandem trace element and isotopes facility. The project aims to integrate a multicollector mass spectrometer with the existing laser ablation laboratory at Southern Cross University to establish a unique facility offering tandem trace element and isotopes analysis. This will provide new methodological advancement by expanding the analytical range and obtaining information otherwise inaccessible to stand-alone instruments using traditional standardisation methods. Sp ....New frontier in Geoscience: A tandem trace element and isotopes facility. The project aims to integrate a multicollector mass spectrometer with the existing laser ablation laboratory at Southern Cross University to establish a unique facility offering tandem trace element and isotopes analysis. This will provide new methodological advancement by expanding the analytical range and obtaining information otherwise inaccessible to stand-alone instruments using traditional standardisation methods. Specifically, the integration of an innovative split stream system allows precise matching of elemental concentration with isotopic ratios, crucial for microscale resolution and data accuracy. The new infrastructure will confirm Australia’s leadership role and maintain its competitive advantage in geosciences.Read moreRead less
Soil microbial indicators for efficient use of nitrification inhibitors. Soil microbial indicators for efficient use of nitrification inhibitors. This project aims to improve understanding of the efficiency and governing factors of nitrification inhibitors in different agricultural soils. Nitrification inhibitors are widely used to improve nitrogen fertiliser efficiency and reduce greenhouse gas nitrous oxide emissions. However, their effectiveness varies across soil types. One possible reason i ....Soil microbial indicators for efficient use of nitrification inhibitors. Soil microbial indicators for efficient use of nitrification inhibitors. This project aims to improve understanding of the efficiency and governing factors of nitrification inhibitors in different agricultural soils. Nitrification inhibitors are widely used to improve nitrogen fertiliser efficiency and reduce greenhouse gas nitrous oxide emissions. However, their effectiveness varies across soil types. One possible reason is the different microbial communities in these soils. The project will address the key knowledge gaps of interactions between the nitrification inhibitors and the soil functional microbial communities. Anticipated outcomes are sound management strategies to improve fertiliser nitrogen use efficiency in Australian agricultural soils.Read moreRead less
New fertiliser technologies for sustained food security. This project aims to provide fundamental research to develop next-generation fertiliser products that will improve nitrogen use efficiency, and reduce nitrogen losses in food production systems. It will achieve this goal through a multidisciplinary approach combining experts in synthetic and free radical chemistry, chemical engineering and soil science, with a strong commitment from a fertiliser industry partner. Society is facing the tri ....New fertiliser technologies for sustained food security. This project aims to provide fundamental research to develop next-generation fertiliser products that will improve nitrogen use efficiency, and reduce nitrogen losses in food production systems. It will achieve this goal through a multidisciplinary approach combining experts in synthetic and free radical chemistry, chemical engineering and soil science, with a strong commitment from a fertiliser industry partner. Society is facing the triple challenges of food security, environmental degradation and climate change The availability of new, highly-efficient fertilisers is critical for addressing these challenges, and for the competitive advantage of the Australian fertiliser industry.Read moreRead less
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
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE200100156
Funder
Australian Research Council
Funding Amount
$471,000.00
Summary
A facility for quantification and isotopic analysis of trace gases. This project aims to develop a new facility for the analysis of trace gases, including nitrous oxide, methane, hydrogen, carbon monoxide, and nitric oxide. This will provide two new capabilities for Australia: 1. It will further our ability to study how microbes cycle trace gases across the continuum from arid soils to the coastal ocean; 2. It will allow us to better understand microbial reactions that remove nitrogen pollution. ....A facility for quantification and isotopic analysis of trace gases. This project aims to develop a new facility for the analysis of trace gases, including nitrous oxide, methane, hydrogen, carbon monoxide, and nitric oxide. This will provide two new capabilities for Australia: 1. It will further our ability to study how microbes cycle trace gases across the continuum from arid soils to the coastal ocean; 2. It will allow us to better understand microbial reactions that remove nitrogen pollution. This will allow us to better understand, monitor and manage microbial processes within soils, sediments, and waters that undertake key ecosystem services, including removal of nitrogen and pollutant gases. Read moreRead less
Linking soil acidification with carbon dynamics in Australian agroecosystems. The ability to mitigate climate change by sequestering soil carbon may be limited in acidic soils, which are prevalent in Australia. The project will investigate the link between carbon cycling, soil acidification and liming, and provide important knowledge to identify agricultural practices which have the capacity to build soil carbon.
Species traits, substrates and stormwater grates: improving the health of urban trees by using polluted stormwater as a resource. This project uses plant traits to select existing and novel tree species for glasshouse studies to quantify the uptake of stormwater and polluting nutrients as well as drought tolerance in stormwater street tree systems. In collaboration with water industry and tree nursery industry partners and a syndicate of local councils, the project aims to install passive stormw ....Species traits, substrates and stormwater grates: improving the health of urban trees by using polluted stormwater as a resource. This project uses plant traits to select existing and novel tree species for glasshouse studies to quantify the uptake of stormwater and polluting nutrients as well as drought tolerance in stormwater street tree systems. In collaboration with water industry and tree nursery industry partners and a syndicate of local councils, the project aims to install passive stormwater street tree systems into existing suburbs and new greenfield developments in Melbourne. Models will be used to design and predict the performance of these stormwater street tree systems, and the glasshouse/field research outputs are expected to refine the leading industry and government relevant urban catchment model.Read moreRead less