Natural and artificial lakes (reservoirs) are ecosystems of major importance; however, environmental pressures such as eutrophication, global warming and overexploitation of water resources put a pressure on them (Gaglio et al. 2017). Phytoplankton is an important element of aquatic ecosystems and a significant indicator of water quality as it responds directly to eutrophication pressure (Hajnal and Padisák 2008). The objectives of this study are: i) to present recent data on phytoplankton communities of Greek reservoirs; and ii) to investigate their correlation with land cover of river basin and water resources management.
