| Impact ID | 6838 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | After the introduction of Rutilus rutilus to Northern Ireland, there was a decline in the Tufted Duck (Aythya fuligula) populations, and it has been implicated that it was caused by competition for zoobenthos. |
| Reference | 33571 |
| Cost | |
| Location | Lough Neagh, Northern Island |