| Impact ID | 1802 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Procambarus clarkii feeds on the endangered California newt egg masses and juvenille slamaders, and the egg masses and newts are absent in streams where the crayfish has been introduced. |
| Reference | 14742 |
| Cost | |
| Location | |