| Impact ID | 8949 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | When growing at a depth of 0.25 m or more, populations of Typha angustifolia can expand at a rate of 1 m per year. |
| Reference | 25016 |
| Cost | |
| Location | Bysjon, Sweden |