How are microorganisms and nutrient cycling in saline soils affected by soil matric potential? Dryland agriculture is threatened by salinity and drought, and it is well-known that individually, both can decrease not only crop growth but also microbial activity and nutrient cycling which are critical for sustainability. As our climate becomes drier, it is necessary to understand how microbial activity and nutrient cycling in saline soils will be affected by drought and sporadic summer rainfall ev ....How are microorganisms and nutrient cycling in saline soils affected by soil matric potential? Dryland agriculture is threatened by salinity and drought, and it is well-known that individually, both can decrease not only crop growth but also microbial activity and nutrient cycling which are critical for sustainability. As our climate becomes drier, it is necessary to understand how microbial activity and nutrient cycling in saline soils will be affected by drought and sporadic summer rainfall events. As an international team of soil biologists, we will investigate the interactions between salinity and soil moisture on microbial activity and nutrient cycling. The results will provide insights into nutrient cycling in saline soils now and in the future and the benefit of amelioration strategies.Read moreRead less
Harnessing microbial respiration for pollutant degradation and natural gas production. This project seeks to exploit compounds produced naturally by microorganisms to develop a marketable green technology for environmental restoration and clean energy generation in Australia and abroad. Metropolitan and regional communities will benefit from improved environmental and human health and the economy will benefit from global application.
Development of the next generation of organo-mineral fertilisers utilising domestic and commercial waste products. Australian agriculture relies heavily on fertilisers and better products are needed that are derived from sustainable sources, have minimal adverse environmental impact and support high plant yields. This project will apply advanced approaches of nanostructural analysis and microbial ecology to developed next-generation organo-mineral fertilisers.
Bioleaching of copper in tropical systems. This project is focussed on bioleaching of chalcopyrite, to recover copper from currently sub-economic low-grade ore. Conventional mining processes are too energy intensive to economically extract copper from low-grade ores. However, these waste ores are still subject to natural, bacterial leaching causing environmental harm. Enhancing this natural process by removing key limitations in bacterial colonisation of metal sulfides aims to enhance bioleachin ....Bioleaching of copper in tropical systems. This project is focussed on bioleaching of chalcopyrite, to recover copper from currently sub-economic low-grade ore. Conventional mining processes are too energy intensive to economically extract copper from low-grade ores. However, these waste ores are still subject to natural, bacterial leaching causing environmental harm. Enhancing this natural process by removing key limitations in bacterial colonisation of metal sulfides aims to enhance bioleaching of low-grade ores creating a win-win scenario, reducing environmental harm while extracting value from these currently uneconomic materials.Read moreRead less
Breaking critical barriers in soil formation of bauxite residues . Conventional methods of bauxite residue rehabilitation require expensive and unsustainable covering topsoil. Building on recent breakthroughs in eco-engineering tailings into soil, the project aims to develop a field-based technology using marine microbes and halophytic plants to accelerate in-situ soil formation from bauxite residues (incl seawater neutralised bauxite residues) under field conditions. The technology will be unde ....Breaking critical barriers in soil formation of bauxite residues . Conventional methods of bauxite residue rehabilitation require expensive and unsustainable covering topsoil. Building on recent breakthroughs in eco-engineering tailings into soil, the project aims to develop a field-based technology using marine microbes and halophytic plants to accelerate in-situ soil formation from bauxite residues (incl seawater neutralised bauxite residues) under field conditions. The technology will be underpinned by understanding the roles of marine microbe consortia and eco-engineering inputs in accelerating key mineralogical, geochemical, physical and biological changes in bauxite residues. This technology is expected to be transferable and adaptable across other alumina refineries in Australia.Read moreRead less
Eco-engineering soil from mine tailings for native plant rehabilitation. Eco-engineering soil from mine tailings for native plant rehabilitation. This project aims to develop integrated and low-cost eco-engineering technology to purposefully accelerate in-situ formation of soil from tailings for sustainable native plant community rehabilitation at metal mines. Soil shortages at mines cost the Australian mining industry billions of dollars in sustainable rehabilitation of tailings, and threaten t ....Eco-engineering soil from mine tailings for native plant rehabilitation. Eco-engineering soil from mine tailings for native plant rehabilitation. This project aims to develop integrated and low-cost eco-engineering technology to purposefully accelerate in-situ formation of soil from tailings for sustainable native plant community rehabilitation at metal mines. Soil shortages at mines cost the Australian mining industry billions of dollars in sustainable rehabilitation of tailings, and threaten the industry’s ecological and commercial sustainability. Building on recent findings of critical processes in soil formation from copper/lead–zinc tailings, this research will use key biogeochemical and rhizosphere processes in the tailing-soil to create a functional 'technosol'. This technology is intended to be used in Australian metal mines to offset the soil needed to rehabilitate tailings landforms with native plant communities.Read moreRead less
In situ remediation in mine site rehabilitation. In situ remediation in mine site rehabilitation. By enhancing and guiding abiotic and biotic processes of soil development, this project aims to accelerate the in situ remediation of bauxite residue (alumina refining tailings). Over 7 gigatonnes of tailings are produced globally every year, comprising complex mineral assemblages at extremes of pH and salinity with minimal biological activity. This project will build detailed knowledge on the chemi ....In situ remediation in mine site rehabilitation. In situ remediation in mine site rehabilitation. By enhancing and guiding abiotic and biotic processes of soil development, this project aims to accelerate the in situ remediation of bauxite residue (alumina refining tailings). Over 7 gigatonnes of tailings are produced globally every year, comprising complex mineral assemblages at extremes of pH and salinity with minimal biological activity. This project will build detailed knowledge on the chemical, physical, and biological properties of bauxite residue and apply this to develop field-scale in situ remediation strategies. This research will also advance understanding of soil development and primary succession of microbial communities in extreme, anthropogenic environments such as those presented by tailings.Read moreRead less
New tools to decipher, predict and manage pacific oyster mortality episodes. This project aims to unite cutting-edge genomic and molecular biological tools with novel quantitative modelling analyses to identify the mechanisms behind oyster disease events. Oyster farming contributes almost $100 million to the Australian economy each year and is a cornerstone of coastal communities, but has been decimated by diseases that threaten this important primary industry. While some causative pathogens hav ....New tools to decipher, predict and manage pacific oyster mortality episodes. This project aims to unite cutting-edge genomic and molecular biological tools with novel quantitative modelling analyses to identify the mechanisms behind oyster disease events. Oyster farming contributes almost $100 million to the Australian economy each year and is a cornerstone of coastal communities, but has been decimated by diseases that threaten this important primary industry. While some causative pathogens have been identified, the environmental catalysts of oyster disease remain a mystery. The expected outcome of this project is an innovative coupling of tools that provides new capacity to forecast disease events, delivering the Australian oyster industry a powerful platform to predict, manage and prevent costly disease outbreaks. By identifying environmental thresholds and oyster disease danger periods, an expected outcome of this project is the development of new oyster farming strategies aimed at avoiding multi-million dollar losses associated with disease outbreaks.Read moreRead less
Accelerated tailings remediation with plant and microbial biotechnologies. The Australian alumina industry produces 32 million tonnes of bauxite residue (alumina refining tailings) each year, most of which is stored in perpetuity in landfill-type tailings storage facilities. The high pH, high salinity, lack of plant nutrients, and poor physical properties of bauxite residue are major barriers to safe storage and successful closure of tailings storage facilities. Existing remediation approaches a ....Accelerated tailings remediation with plant and microbial biotechnologies. The Australian alumina industry produces 32 million tonnes of bauxite residue (alumina refining tailings) each year, most of which is stored in perpetuity in landfill-type tailings storage facilities. The high pH, high salinity, lack of plant nutrients, and poor physical properties of bauxite residue are major barriers to safe storage and successful closure of tailings storage facilities. Existing remediation approaches are expensive, slow, and often ineffective. We will deliver new microbial- and plant-driven biotechnologies for rapid, cost-effective remediation of bauxite residue. This will enable safe, sustainable closure of storage facilities, and safeguard the strong contribution of this $15 billion industry to Australia's economy. Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE130100019
Funder
Australian Research Council
Funding Amount
$580,000.00
Summary
A transportable containerised laboratory for rapid cell sorting and high-resolution bioimaging of living aquatic microbes in field locations. This project will deliver a transportable, unique laboratory for the rapid isolation and high-resolution analysis of living microbes immediately after sampling from the sea or waterways. It will be the first of its kind in Australia and deliver new knowledge of the role of these organisms in their natural habitats.