| Impact ID | 7738 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | The increase in ruffe (Gymnocephalus cernua) in western Lake Superior was concurrent with declines in several fish species, including yellow perch (Perca flavescens), emerald shiner (Notropis atherinoides), and trout-perch (Percopsis omiscomaycus). However, there was a lack of clear causal evidence between the two events. |
| Reference | 9377 |
| Cost | |
| Location | Lake Superior |