| Impact ID | 6840 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | After the introduction of Rutilus rutilus to Northern Ireland, populations of the once abundant Tufted Duck, Aythya fuligula, experienced a decline in its population. Competition for benthos is suggested to be the cause. There was an increase in the populations of a piscivorous bird, the great crested grebes (Podiceps cristatus), and it is thought that R. rutilus is a food resources for the bird. |
| Reference | 33571 |
| Cost | |
| Location | Lough Neagh, Northern Island |