| Impact ID | 4270 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In the Vír Reservoir, Czech Republic, the high abundance of young-of-year Eurasian perch decreased Daphnia spp. size and abundance, resulting in the poor nutritional conditions of bream Abramis brama |
| Reference | 35188 |
| Cost | |
| Location | Czech Republic |