Species Accounts – Invasive Species Northern Ireland

Wire weed

Sargassum muticum

Status:

Established

Habitat:

Marine

Threats:

Competition with native species.

Zander

Stizostedion lucioperca

Status:

Potential

Habitat:

Freshwater

Threats:

Competes with native fish species. Transmits fish disease and parasites.

Zebra mussel

Dreissena polymorpha

Status:

Established

Habitat:

Freshwater

Threats:

Fouling, negative impacts on native species and local extinction of unionids.