| Impact ID | 4482 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In Norway, the spread of Elodea canadensis resulted in a community once dominated byNajas flexilis (wavy waternymph) to become fully dominated by E. canadensis. |
| Reference | 36388 |
| Great Lakes Region | No |
| Cost | |
| Location | Norway |
