Research of the Laboratory of Phytoplankton Ecology and Reservoir Limnology is focused on freshwater microscopic algae and cyanobacteria (jointly referred to as phytoplankton) inhabiting lentic ecosystems, namely reservoirs. Freshwater reservoirs provide important ecosystem services such as the supply of drinking water, irrigation, transportation, industrial and cooling water supplies, power generation, flood control or recreation. They differ from natural lakes in several important aspects: elongated morphology, shorter water residence time, pronounced water level fluctuation and irregular water withdrawal, often from various strata.