| Impact ID | 7576 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | The introduction and establishment of Stephanodiscus bineranus, along with Actinocyclus normanii f. subsalsa, were accompanied by the reduction of five native diatoms (S. transilvanicus, Cyclotella comta, C. michiganiana, C. ocellanta, and C. stelligera) in Lake Ontario. |
| Reference | 17330 |
| Cost | |
| Location | Rochester Basin, Lake Ontario, USA |