| Impact ID | 2039 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Potamopyrgus antipodarum in the Snake River Basin (Idaho, USA) were found in high densities and outnumbered the native snails in three different habitats. |
| Reference | 13759 |
| Great Lakes Region | No |
| Cost | |
| Location | |
