Nuttalls waterweed
Elodea nuttallii
Status:
Established
Habitat:
Freshwater
Threats:
Negative impacts on native macrophytes and invertebrates.
Oyster drill
Ceratostoma inornatum and Urosalpinx cinerea
Status:
Potential
Habitat:
Marine
Threats:
Serious impacts on oyster populations.
Pacific or Pink Humpback Salmon
Oncorhynchus gorbuscha
Status:
Established
Habitat:
Freshwater
Threats:
Parrots Feather
Myriophyllum aquaticum
Status:
Established
Habitat:
Freshwater
Threats:
Competition with native macrophytes. Clogging of waterways.
Quagga mussel
Dreissena bugensis
Status:
Potential
Habitat:
Freshwater
Threats:
Fouling, negative impacts on native species and local extinction of unionids.
Red King Crab
Paralithodes camtschaticus
Status:
Potential
Habitat:
Marine
Threats:
Competition with native species.
Rhododendron
Rhododendron ponticum
Status:
Established
Habitat:
Terrestrial
Threats:
Competition with native plants.
Ruddy duck
Oxyura jamaicensis
Status:
Established
Habitat:
Terrestrial
Threats:
Negative impacts on the survival of the White-headed duck.
Ruffe
Gymnocephalus cernuus
Status:
Potential
Habitat:
Freshwater
Threats:
Negative impacts on native fish communities.
Invasive Species Ireland

Invasive Species Ireland