| Impact ID | 5463 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Corbicula fluminea became the dominant species (numeric and biomass) within 15 years of introduction. Native bivalve fauna nearly disappeared, at least on soft-bottom substrates. |
| Reference | 38675 |
| Cost | |
| Location | Portugal, River Minho estuary |