| Impact ID | 8947 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Typha angustifolia is especially invasive in disturbed wetlands and readily forms dense, monotypic stands that shade out other species. |
| Reference | 25001 |
| Great Lakes Region | No |
| Cost | |
| Location | |