Impact of cyanobacterial bloom intensity on plankton ecosystem functioning measured by eukaryotic phytoplankton and zooplankton indicators

•Cyanobacteria impacted plankton bio-diversity and resource use efficiency.•No clear relation between cyanobacteria and phytoplankton absolute abundances.•Cyanobacteria had opposite relation with phytoplankton and zooplankton bio-diversities.•Cyanobacteria increased total algae and cladocerans RUEs.•Cyanobacteria decreased phytoplankton and rotifers RUEs.