Modelling Escherichia coli Dynamics in an Urban Estuary JOVANOVICDUSAN 2019 The main aim of the PhD research project was to develop and test a more comprehensive and robust estuarine microorganism model, using the Yarra River estuary as a case study. The final model is based on a substantial data set and compiles a range of different components, which ensure that all inputs and estuary processes related to movement and survival of faecal microorganisms are accurately characterised. This research paves the way for practical applications for the management of this iconic water body.