| Impact ID | 6735 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Because the sea lamprey greatly reduced the population of large predators, alewife populations exploded and were followed by tremendous die-offs, resulting in additional changes to fish species composition in the lakes |
| Reference | 1267 |
| Cost | |
| Location | Great Lakes, USA |