American skunk cabbage
Lysichiton americanus
Status:
Established
Habitat:
Terrestrial
Threats:
Since the species is able to build dense stands, smaller plants growing in wetlands are out-competed by shadowing.
Asian clam
Corbicula fluminea
Status:
Established
Habitat:
Freshwater
Threats:
Competition with native species. Biofouling.
Black rat
Rattus rattus
Status:
Established
Habitat:
Terrestrial
Threats:
Negative impacts on native flora and fauna.
Bloody-red shrimp
Hemimysis anomala
Status:
Established
Habitat:
Freshwater
Threats:
Alteration of ecosystem dynamics. Competition with native species.
Brown rat
Rattus norvegicus
Status:
Established
Habitat:
Terrestrial
Threats:
Negative impacts on native flora and fauna.
Chub
Squalius cephalus
Status:
Established
Habitat:
Freshwater
Threats:
Negative impacts on native salmonid species. Associated economic impacts.
Coypu
Myocaster coypus
Status:
Established
Habitat:
Terrestrial
Threats:
Riparian, wetland habitats destruction
Crayfish plague
Aphanomyces astaci
Status:
Established
Habitat:
Freshwater
Threats:
Destruction of the native White - Clawed Crayfish population
Curly waterweed
Lagarosiphon major
Status:
Established
Habitat:
Freshwater
Threats:
Significant changes to the ecology of the invaded habitat for native plants, insects and fish.
Invasive Species Ireland

Invasive Species Ireland