Food web interactions in lake ecosystems and disturbances affecting these interactions are one of the main topics in our research. In aquatic food webs, predation (top-down regulation) regulates the abundance and behavior of communities, and also affects the physical-chemical water quality. Therefore, disturbances that affect predator-prey interactions can have substantial impacts on the ecosystems. For instance climate change affects numerous characteristics of lake ecosystems, with consequences for the functioning of aquatic food webs. .