| Impact ID | 8198 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Grazing by faucet snail (Bithynia tentaculata), along with another snail species, was correlated with a decline in microalgal species richness (but increased evenness) and a significant reduction in the biomass microalgae, nanoautrophs, and bacteria. |
| Reference | 24550 |
| Cost | |
| Location | Lake Erken, Sweden |