| Impact ID | 7081 |
| Impact Type | Habitat Alteration |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Hygrophila polysperma has spread rapidly where it exists in Texas, historically occupying up to 20% of the Comal River’s area, where it is thought to replace native macrophytes. |
| Reference | 31299 |
| Cost | |
| Location | Comal River, Texas |