Water Fern
Azolla filiculoides
Status:
Established
Habitat:
Freshwater
Threats:
Reduction of surface light reaching the benthos.
Water hyacinth
Eichhornia crassipes
Status:
Potential
Habitat:
Freshwater
Threats:
Likely to have a significant adverse impact on biodiversity or the related ecosystem services
Water primrose
Ludwigia grandiflora
Status:
Potential
Habitat:
Freshwater
Threats:
Competition with native species.
Wild boar and hybrids
Sus scrofa
Status:
Potential
Habitat:
Terrestrial
Threats:
Habitat alteration. negative impacts on native flora and fauna.
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.
Invasive Species Ireland

Invasive Species Ireland