| Impact ID | 8380 |
| Impact Type | Environmental Water Quality |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In Lake Ontario, there is a correlation between an increase in chlorophyll a concentration and the increase of Cercopagis pengoi (fishhook flea) and decrease of herbivorous zooplankton. This suggests that C. pengoi likely had a significant top-down (albeit variable) effect on zooplankton communities in Lake Ontario, although these predatory effects appear to have declined steadily since the species’ establishment. |
| Reference | 24540 |
| Cost | |
| Location | Hamlin Beach State Park, Lake Ontario, New York, USA |