The effect of temperature change on aquatic food webs is gaining increasing scientific attention. The recent IPCC report anticipated a rise in lake water temperature of up to 4°C, accompanied by a series of weather events that may cause frequent temperature fluctuations. In this study, masterstudent Paula Take investigated under supervision of Martin Kainz how increasing temperature affects the biodiversity and biochemical composition of plankton communities by conducting long-term, multi-seasonal mesocosm experiments.