| Impact ID | 2054 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In the Mont Saint-Michel Bay system of France, Potamopyrgus antipodarum altered the gastropod richness, making up over 80% of gastropods. |
| Reference | 15798 |
| Great Lakes Region | No |
| Cost | |
| Location | |
