Many lakes across the globe have undergone eutrophication during the past century, primarily attributable to nutrient enrichment resulting from anthropogenic activities. Significant alterations have been observed in phytoplankton communities, resulting in blooms of cyanobacteria with the potential to adversely impact zooplankton populations by causing mechanical disruption, nutritional deficits, or toxicity. In Lake Greifensee (Switzerland), eutrophication began ca. 1930 and peaked in 1974, afte