| Impact ID | 7170 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | The first recorded bloom of Ulva flexuosa in the Great Lakes occurred in Muskegon Lake, where it dominated the macrophyte community. Ulva flexuosa supported a relatively low density and diversity of epiphytes compared to native macrophytes. |
| Reference | 17219 |
| Cost | |
| Location | Michigan, USA |