| Impact ID | 3710 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Sediment cores taken from Lake Ontario indicate the introduction of Actinocyclus normanii f. subsalsa is correlated with the extirpation of native species including S. transilvanicus, Cyclotella comta, C. michiganiana, C. ocellata, and C. stelligera. |
| Reference | 10410 |
| Cost | |
| Location | United States, Lake Ontario |