| Impact ID | 2897 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | From 1983-1990, densities of major benthic macroinvertebrate groups (Diporeia, Oligochaeta, Sphaeriidae) declined precipitously in shallow waters of southern Lake Michigan from 1980-1993 likely due to the filtering capability of large zebra mussel populations. |
| Reference | 20726 |
| Great Lakes Region | Yes |
| Cost | |
| Location | Lake Michigan |
