| Impact ID | 4047 |
| Impact Type | Other |
| Study Type | Anecdotal |
| Study Location | Field |
| Impact Description | The heavy predation of the introduced Lithobates catesbeianus upon the Oregon spotted Frog Rana pretiosa is thought to be responsible for the species near-complete extirpation in the American Cascades. |
| Reference | 35697 |
| Great Lakes Region | No |
| Cost | |
| Location | Pacific Northwest, USA |
