| Impact ID | 4231 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Once introduced, Phragmites australis quickly outgrows native plant communities, changing them from lower mixed-statured communities into tall grass monocultures. |
| Reference | 30163 |
| Great Lakes Region | No |
| Cost | |
| Location | North America |
