| Impact ID | 4691 |
| Impact Type | Habitat Alteration |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Japanese knotweed, Fallopia japonica, has reduced the diversity and abundance of native understory plant species. The plant also appears to have suppressed long-term tree recruitment, with the potential to shift the community from a tree-dominated riparian forest to a knotweed-dominated herbaceous shrubland. |
| Reference | 37077 |
| Great Lakes Region | Yes |
| Cost | |
| Location | West Branch Susquehanna River, Pennsylvania, USA |
