Physico-chemical controls for cyanobacteria in reservoirs

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Background, Relevance and Research Approach:

The objectives of this project were to:

• determine the key nutrient (N, P and Fe), light and temperature requirements of Microcystis and Anabaena species (including the impact of nutrient form and transformation dynamics on uptake kinetics) that typically occur in Lake Burragorang and other selected Sydney water supply reservoirs and to gain insight into the mode of nutrient acquisition by the organisms
• assess the impact of nutrient availability and growth conditions on production of toxins by these Microcystis and Anabaena species
• relate the nutrient requirements, growth characteristics and exudate production of the Microcystis and Anabaena species to biogeochemical and physical conditions in Lake Burragorang and other Sydney water supply reservoirs