Vine-like fern
Lygodium japonicum
Status:
Potential
Habitat:
Terrestrial
Threats:
Outcompetes native species.
Virile crayfish
Orconectes virilis
Status:
Potential
Habitat:
Freshwater
Threats:
Predation of native species leading to disruption of habitats
Wakame
Undaria pinnatifida
Status:
Established
Habitat:
Marine
Threats:
Habitat alteration. Loss of native biodiversity.
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 lettuce
Pistia stratiotes
Status:
Potential
Habitat:
Freshwater
Threats:
Alters habitats. Creates single species matts. Crowds out native species.
Water primrose
Ludwigia grandiflora
Status:
Potential
Habitat:
Freshwater
Threats:
Choke waterways and competing with native species
Water soldier
Stratiotes aloides L.
Status:
Established
Habitat:
Freshwater
Threats:
Spreads vegatively. Grows quickly and forms large mats.
Whitetop weed
Parthenium hysterophorus
Status:
Potential
Habitat:
Terrestrial
Threats:
Competes with native species
Invasive Species Ireland

Invasive Species Ireland