| Impact ID | 1881 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | When introduced into a water body, competition between the two species resulted in a 56% reduction in pumpkinseed abundance, and a 69% reduction in average snail biomass when compared with lakes without redear. |
| Reference | 14505 |
| Cost | |
| Location | W. K. Kellogg Biological Station of Michigan State Universi, Michigan, USA |