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Biocontrol of foaming in activated sludge plants with bacteriophages. Activated sludge systems are the most widely used processes for treating wastewater in Australia. Yet most eventually suffer from episodes of bulking and foaming, where high levels of biosolids leave the plant with the treated waste, representing serious pollution hazards. Attempts to solve these problems have met with limited success.The highly novel biocontrol method proposed here will provide a specific, environmentally fri ....Biocontrol of foaming in activated sludge plants with bacteriophages. Activated sludge systems are the most widely used processes for treating wastewater in Australia. Yet most eventually suffer from episodes of bulking and foaming, where high levels of biosolids leave the plant with the treated waste, representing serious pollution hazards. Attempts to solve these problems have met with limited success.The highly novel biocontrol method proposed here will provide a specific, environmentally friendly and safe method to protect our rivers, streams and oceans form the harmful consequences of these problemsRead moreRead less
Microbiology of Autothermal Thermophilic Aerobic Digester (ATAD) Systems for Biosolids Disposal in Wastewater Treatment Systems. The disposal of biosolids from wastewater treatment plants is expensive and troublesome. ATAD systems utilise microbes and are claimed to overcome many of the problems of more conventional disposal methods. Two have been installed in plants in central Victoria. However, virtually nothing is known about their microbiology. The study will determine which microbial popula ....Microbiology of Autothermal Thermophilic Aerobic Digester (ATAD) Systems for Biosolids Disposal in Wastewater Treatment Systems. The disposal of biosolids from wastewater treatment plants is expensive and troublesome. ATAD systems utilise microbes and are claimed to overcome many of the problems of more conventional disposal methods. Two have been installed in plants in central Victoria. However, virtually nothing is known about their microbiology. The study will determine which microbial populations are present and responsible for biosolids digestion, how these populations might change with changing operational conditions, and whether these changes in populations relate to production of odors. This information will enable these digesters to be better managed and operated.Read moreRead less
Ecology, physiology and molecular microbiology of coral disease on the Great Barrier Reef. Ecological, physiological, molecular and micro-biological techniques will be used to examine the disease of corals of the Great Barrier Reef (GBR). Molecular techniques include the development of diagnostic techniques for disease identification, using Fluorescent In Situ hybridisation (FISH) and DNA microarrays (CHIPS); physiological experiments include examining the effects of temperature and sediment o ....Ecology, physiology and molecular microbiology of coral disease on the Great Barrier Reef. Ecological, physiological, molecular and micro-biological techniques will be used to examine the disease of corals of the Great Barrier Reef (GBR). Molecular techniques include the development of diagnostic techniques for disease identification, using Fluorescent In Situ hybridisation (FISH) and DNA microarrays (CHIPS); physiological experiments include examining the effects of temperature and sediment on virulence and host susceptibility to disease infection; ecological surveys will examine the extent and seasonality of disease in northern and southern parts of the GBR and on isolated reefs in the central GBR. Management implications of the current coral-disease status of the GBR will be targeted.Read moreRead less
Improved biosecurity through the engineering of microbial ecosystems. This project aims to provide data and understanding that will help develop predictive models for changes in the distribution of drug-resistant bacteria, and surveillance and response programs for key biosecurity threats. Microorganisms, including commensals and pathogens, can live in complex communities in a range of environments including animal hosts. It is now known that these communities (known as microbiomes) can exert a ....Improved biosecurity through the engineering of microbial ecosystems. This project aims to provide data and understanding that will help develop predictive models for changes in the distribution of drug-resistant bacteria, and surveillance and response programs for key biosecurity threats. Microorganisms, including commensals and pathogens, can live in complex communities in a range of environments including animal hosts. It is now known that these communities (known as microbiomes) can exert a profound effect on animal health. This project seeks to understand where antimicrobial resistance genes reside in pig gut microbiotia and how they move between members of this complex microbial community, and to provide information on how probiotics may be used to reduce dependence on antibiotics.Read moreRead less
Bacterial mechanisms of gold mobilisation and precipitation with applications to mineral processing and exploration. The development of a comprehensive model for the biogeochemical behaviour of gold in the environment will aid mineral explorers to interpret existing exploration data and to develop better exploration strategies. Moreover, this project aims to develop the basis for a new geomicrobiological gold exploration method by identifying organisms and microbial gene sequences that could be ....Bacterial mechanisms of gold mobilisation and precipitation with applications to mineral processing and exploration. The development of a comprehensive model for the biogeochemical behaviour of gold in the environment will aid mineral explorers to interpret existing exploration data and to develop better exploration strategies. Moreover, this project aims to develop the basis for a new geomicrobiological gold exploration method by identifying organisms and microbial gene sequences that could be used as biomarkers for mineralisation. This research will also provide the fundamental information required to copy nature and engineer new cost-efficient and environmentally friendly technologies for gold processing using microorganisms that occur naturally in Australian soils. Read moreRead less
Targeted isolation of specific marine bacterial species associated with higher organsims for the purpose of discovering new antimicrobial compounds. Specific bacterial species that are commonly found in association with marine plants and animals often produce active secondary metabolites. The aim of this project is to apply our understanding of these bacterial-host associations to the targeted isolation of novel antimicrobials from the marine environment. While these new compounds will undoubted ....Targeted isolation of specific marine bacterial species associated with higher organsims for the purpose of discovering new antimicrobial compounds. Specific bacterial species that are commonly found in association with marine plants and animals often produce active secondary metabolites. The aim of this project is to apply our understanding of these bacterial-host associations to the targeted isolation of novel antimicrobials from the marine environment. While these new compounds will undoubtedly have a number of commercial applications this project focuses on the development of products for dental hygiene in animals. Generally, the urgent need for new antimicrobial compounds to combat the growing number of microbes that are resistant to current antibiotics highlights the importance of this project.Read moreRead less
Mechanisms and management of inducible tolerance to synthetic insecticides and Bacillus thuringiensis (Bt)-formulations in Australian populations of diamondback moth. Insects have a cunning ability to respond to damaging environments by evolving genetic resistance or mobilising metabolic tolerance mechanisms. Recent observations of inducible tolerance to synthetic and biopesticides, which can be transmitted to offspring by a maternal effect has the potential to cause ecological and economic prob ....Mechanisms and management of inducible tolerance to synthetic insecticides and Bacillus thuringiensis (Bt)-formulations in Australian populations of diamondback moth. Insects have a cunning ability to respond to damaging environments by evolving genetic resistance or mobilising metabolic tolerance mechanisms. Recent observations of inducible tolerance to synthetic and biopesticides, which can be transmitted to offspring by a maternal effect has the potential to cause ecological and economic problems in agricultural production. We will use field-collected Diamondback moth (DBM), a major insect pest in canola and brassica vegetable crops, to investigate the genetic implications of inducible tolerance for the integrated management of DBM and for the design of new resistance management strategies.Read moreRead less
Biological phosphorous removal for wastewater treatment. The aim is to provide a scientific basis for understanding how phosphorous can be removed in wastewater treatment plants, using environmentally safe biological methods rather than by using chemicals. This is expected to lead to improved performance in wastewater treatment plants, which will be of economic and environmental benefit, particularly to regional communities in inland Australia.
Development and implementation of biodiversity information for sustainable management of South Australian groundwater. Clean potable water is one of the most important resources for human health and a successful economy. Increasingly, subterranean aquifers are used for storage and recovery of water. These aquifers contain dynamic ecosystems, but little is known about species composition or about the importance of the presence of various species for water quality. We will use the latest laborator ....Development and implementation of biodiversity information for sustainable management of South Australian groundwater. Clean potable water is one of the most important resources for human health and a successful economy. Increasingly, subterranean aquifers are used for storage and recovery of water. These aquifers contain dynamic ecosystems, but little is known about species composition or about the importance of the presence of various species for water quality. We will use the latest laboratory techniques and DNA identification methods to provide a template for determining ground water diversity and food web dynamics throughout Australia. This project will lead to a better understanding of how to manage ground water in a sustainable manner.Read moreRead less
Determination of factors effecting pathogen removal in lagoons treating and storing effluent for reuse. Waste stabilisation ponds are a preferred treatment option for wastewater in many rural and remote communities within Australia and overseas because of their low-tech, robust structure. Reducing numbers of pathogens in the final treated effluent of these systems so that it can be reused, will minimise risks to the public and the environment and improve management of this sustainable water reso ....Determination of factors effecting pathogen removal in lagoons treating and storing effluent for reuse. Waste stabilisation ponds are a preferred treatment option for wastewater in many rural and remote communities within Australia and overseas because of their low-tech, robust structure. Reducing numbers of pathogens in the final treated effluent of these systems so that it can be reused, will minimise risks to the public and the environment and improve management of this sustainable water resource throughout the region. This research also provides an opportunity for Australia to export knowledge on the efficient use of these systems to 2.4 billion people worldwide currently without access to affordable sanitation.Read moreRead less