| Impact ID | 4105 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Lithobates catesbeianus have replaced the Northern Leopard frog (Lithobates pipiens) in wetland areas of Northeastern Colorado, and in areas where the species co-occur, the Leopard frog populations were not breeding. |
| Reference | 19801 |
| Cost | |
| Location | Colorado, USA |