| Impact ID | 4043 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Lithobates catesbeianus are more abundant than the native California red-legged frog (Rana aurora draytonii) in conditions of predation by nonendemic fish in California, suggesting competitive advantage. |
| Reference | 13523 |
| Cost | |
| Location | California, USA |