This list is provided to support the data gathering phase of the economic impact assessment for invasive species in Ireland and Northern Ireland. Please do not use or refer to this list for any other purpose without contacting the project team.
This is not an exhaustive list; if you have information on other invasive species please include this in your response.
| Species | Habitat Type |
| Plant Species | |
| Curly waterweed (Lagarosiphon major) | Freshwater |
| Floating pennywort (Hydrocotyle ranunculoides) | Freshwater |
| Giant hogweed (Heracleum mantegazzianum) | Terrestrial |
| Giant rhubarb (Gunnera tinctoria) | Terrestrial |
| Himalayan balsam (Impatiens glandulifera) | Terrestrial |
| Hottentot fig (Carpobrotus edulis) | Terrestrial |
| Japanese knotweed (Fallopia japonica) | Freshwater |
| Ludwigia (Ludwigia spp.) | Freshwater |
| New Zealand pigmyweed (Crassula helmsii) | Freshwater |
| Nuttalls waterweed (Elodea nuttallii) | Freshwater |
| Parrots Feather (Myriophyllum aquaticum) | Freshwater |
| Rhododendron (Rhododendron ponticum) | Terrestrial |
| Smooth cordgrass (Spartina anglica) | Marine |
| Water Fern (Azolla filiculoides) | Freshwater |
| Wire weed (Sargassum muticum) | Marine |
| Animal Species | |
| Asian Clam (Corbicula fluminea) | Freshwater |
| Black rat (Rattus rattus) | Terrestrial |
| Bloody-red shrimp (Hemimysis anomala) | Freshwater |
| Brown rat (Rattus norvegicus | Terrestrial |
| Chinese mitten crab (Eriocheir sinensis) | Freshwater |
| Chub (Squalius cephalus) | Freshwater |
| Dace (Leuciscus leuciscus) | Freshwater |
| Didemnum vexillum (Didemnum vexillum) | Marine |
| Feral Ferret (Mustela furo) | Terrestrial |
| Grey squirrel (Sciurus carolinensis) | Terrestrial |
| Harlequin ladybird (Harmonia axyridis) | Terrestrial |
| Mink (Mustela vison) | Terrestrial |
| Muntjac (Muntiacus reevesi) | Terrestrial |
| New Zealand flatworm (Arthurdendyus triangulates) | Terrestrial |
| Rabbit (Oryctolagus cuniculus) | Terrestrial |
| Ruddy duck (Oxyura jamaicensis) | Terrestrial |
| Slipper Limpet (Crepidula fornicate) | Marine |
| Wild boar and hybrids (Sus scrofa) | Terrestrial |
| Zebra mussel (Dreissena polymorpha) | Freshwater |
| Plant Pathogens | |
| Phytophthora ramorum | Terrestrial |
