| Impact ID | 4571 |
| Impact Type | Habitat Alteration |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | rock bass, smallmouth bass, largemouth bass, bluegill, and pumpkinseed avoid areas with starry stonewort present |
| Reference | 36862 |
| Cost | |
| Location | Lake Simcoe |