| Impact ID | 4800 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In the Netherlands, D. villosus has replaced many populations of the European native amphipod species Gammarus duebeni, as well as those of the North American invader G. tigrinus |
| Reference | 16390 |
| Cost | |
| Location | Netherlands |