| Impact ID | 8009 |
| Impact Type | Biocontrol |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In areas where Glyceria maxima (reed manna grass) could begin growth early in the season, it can out-compete Phragmites australis. |
| Reference | 25476 |
| Cost | |
| Location | Tentsmuir National Nature Reserve, Fife, Scotland |