| Impact ID | 2317 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | The abundance and richness of small gastropods (=14 mm) was negatively correlated with Neogobius melanostomus density across all sites, and declined over time. |
| Reference | 24154 |
| Cost | |
| Location | upper St. Lawrence River |