Canadian waterweed
Elodea canadensis
Status:
Established
Habitat:
Freshwater
Threats:
Creates single species stands. Outcompetes native plants. Reduces waterflow.
Carpet sea squirt
Didemnum vexillum
Status:
Established
Habitat:
Marine
Threats:
Alter marine habitats.
Chub
Squalius cephalus
Status:
Established
Habitat:
Freshwater
Threats:
Negative impacts on native salmonid species. Associated economic impacts.
Clematis vitalba
Clematis vitalba
Status:
Established
Habitat:
Terrestrial
Threats:
Outcompetes native species. Lowers plant biodiversity.
Cotoneaster
Cotoneaster spp.
Status:
Established
Habitat:
Terrestrial
Threats:
Outcompetes native species. Easily spread.
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.
Dace
Leuciscus leuciscus
Status:
Established
Habitat:
Freshwater
Threats:
Negative impacts on native salmonids.
Devil’s tongue weed
Grateloupia turuturu
Status:
Established
Habitat:
Marine
Threats:
Outcompetes native species. Can survive in a wide range of habitats.
Invasive Species Ireland

Invasive Species Ireland