| Impact ID | 9358 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Faxonius rusticus occurrences have increased from 7% of all crayfish records collected during the first 20 years of their invasion (1965–1984) to 36% of all records during the last 20 years, and rusty crayfish have replaced the northern clearwater crayfish (F. propinquus) and virile crayfish (F. virilis). |
| Reference | 15923 |
| Cost | |
| Location | Wisconsin |