| Impact ID | 4594 |
| Impact Type | Habitat Alteration |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Insect diversity in the soil of marshes dominated by introduced Phalaris arundinacea stands were lower compared to adjacent marshes without Phalaris arundinacea. |
| Reference | 36495 |
| Cost | |
| Location | Spencer Island, Washington, USA |