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Title: Using biofilm assemblages to develop a monitoring framework for regulated coastal rivers in south-eastern Australia
Contributor(s): Mascarenhas, Emilie  (author); Ryder, Darren  (supervisor); Boulton, Andrew  (supervisor); Downes, Barbara (supervisor)
Conferred Date: 2010
Copyright Date: 2009
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Abstract: Increasing human demand on the world's water resources has led to the construction of dams and diversions that cause major alterations to natural flow regimes and threaten riverine ecosystems globally. Consequently, water resource management now recognises the need to establish the extent to which flow regimes can be altered while maintaining the integrity of the ecosystem. However, the ecological consequences of changing the physical regime are often difficult to predict and, therefore, a well-designed monitoring program, capable of detecting directional change in aquatic biota is critical for assessing human impacts and evaluating the effectiveness of restoration activities. Altered hydrology can affect biofilm assemblages by influencing two counteracting flow-related processes - mass-transfer leading to biomass accrual and shear stress leading to biomass loss. This study uses biofilm assemblages to investigate the biological condition of the regulated Nymboida River, south-eastern Australia, under current flow management practices and to design a monitoring program capable of detecting a change in this condition as flow management practices are altered in the future. The outcome of this study is a scientifically defensible monitoring program that provides meaningful outcomes in both an ecological and managerial context.
Publication Type: Thesis Doctoral
Fields of Research (FoR) 2008: 050209 Natural Resource Management
060204 Freshwater Ecology
Socio-Economic Objective (SEO) 2008: 960802 Coastal and Estuarine Flora, Fauna and Biodiversity
960902 Coastal and Estuarine Land Management
Rights Statement: Copyright 2009 - Emilie Mascarenhas
HERDC Category Description: T2 Thesis - Doctorate by Research
Appears in Collections:Thesis Doctoral

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