| Impact ID | 7996 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Glyceria maxima (reed manna grass) invades numerous wetland ecosystems, including swamps, lakes, ponds, slow-moving rivers and creeks, ditches, and wet meadows. |
| Reference | 25262 |
| Cost | |
| Location | |