| Impact ID | 2898 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Zebra mussels appeared to have no effect on the native unionid mussel population in this marsh before and after the zebra mussel invasion. |
| Reference | 20742 |
| Great Lakes Region | Yes |
| Cost | |
| Location | Lake Erie |
