| Impact ID | 7757 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | It has been speculated that a white perch (Morone americana) diet of Daphnia in Lake Champlain contributed to the decline of the species in this locality since white perch became established. |
| Reference | 18254 |
| Cost | |
| Location | Lake Champlain, Quebec, Canada |