| Impact ID | 4615 |
| Impact Type | Food Web |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Phalaris arundinacea form dense stands that replace native vegetation, which changes the food web of the riparian zones in Washington. |
| Reference | 27596 |
| Great Lakes Region | No |
| Cost | |
| Location | Washington state, USA |
