| Impact ID | 2692 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | There was a strong negative correlation between Dreissena biomass and abundance of live unionids. Most of the more heavily colonized unionids showed damage to the posterior valve edges. |
| Reference | 9058 |
| Great Lakes Region | No |
| Cost | |
| Location | |
