Competition or cooperation between marine biofilm bacteria recycling POM? Biofilms develop on any wetted surface by adhesion and subsequent growth of microorganisms. Recycling the energy, carbon and nitrogen contained in oceanic particulate organic matter (POM) is a global process essential for life on Earth. Ocean POM is degraded by its biofilm consortia, particularly bacteria secreting digestive enzymes. It is not known whether biofilm bacteria compete or cooperate in recycling POM. This proj ....Competition or cooperation between marine biofilm bacteria recycling POM? Biofilms develop on any wetted surface by adhesion and subsequent growth of microorganisms. Recycling the energy, carbon and nitrogen contained in oceanic particulate organic matter (POM) is a global process essential for life on Earth. Ocean POM is degraded by its biofilm consortia, particularly bacteria secreting digestive enzymes. It is not known whether biofilm bacteria compete or cooperate in recycling POM. This project combines microscopy image analysis, flow cytometry and molecular genetics to determine bacterial interactions quantitatively in mixed-species biofilms on natural POM. Results will increase knowledge of bacterial community functioning and biofilm recycling of POM in marine environments.Read moreRead less
Coastal monitoring using metal resistant microbes. We will develop an early warning, rapid biological assessment (RBA) for sediment toxicity that can be used alongside chemical tests to detect sub-chronic changes in the environment. The assessment will be validated by extensive testing of impacted sediment. We will show how the RBA fits into existing decision trees defined by the Australian and New Zealand Environment and Conservation Council (ANZECC) 2000 Guidelines. The biological tests result ....Coastal monitoring using metal resistant microbes. We will develop an early warning, rapid biological assessment (RBA) for sediment toxicity that can be used alongside chemical tests to detect sub-chronic changes in the environment. The assessment will be validated by extensive testing of impacted sediment. We will show how the RBA fits into existing decision trees defined by the Australian and New Zealand Environment and Conservation Council (ANZECC) 2000 Guidelines. The biological tests resulting from this project will be as rapid and straightforward as existing chemical tests, which will facilitate industry acceptance. The project has strong industry involvement from mining companies, the Environment Protection Agency (EPA) and traditional owners. These partners will guide this project and facilitate communication to the wider industry to aid acceptance and uptake.Read moreRead less