| Impact ID | 8021 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | There have also been reports that common frogbit (Hydrocharis morsus-ranae) populations have been aggressively growing in large areas of shallow, open waters in Michigan. |
| Reference | 31186 |
| Cost | |
| Location | Michigan, USA |