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  • Habitat: freshwater
  • WFD UKTAG impact: High
  • Species list: NRW Sustainable Management of Natural Resources (SMNR)

Wales marine risk assessment

Priority species for Wales

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Showing 1 - 20 of 25 taxa
  1. Azolla filiculoides Lam. – Water Fern non-native

    Species, Fern, Freshwater

    Rhedynen y Dŵr, Rhedyn y Dŵr

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  2. Corbicula fluminea (O. F. Müller, 1774) non-native

    Species, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  3. Crassula helmsii (Kirk) Cockayne – New Zealand Pigmyweed non-native

    Species, Flowering plant, Freshwater

    New Zealand Pygmyweed, mion-luibh Shealainn Nuaidh, Corchwyn Seland Newydd

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  4. Dikerogammarus haemobaphes (Eichwald, 1841) – Demon Shrimp non-native

    Species, Crustacean, Freshwater, marine

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  5. Dikerogammarus villosus (Sowinsky, 1894) – Killer Shrimp non-native

    Species, Crustacean, Freshwater, terrestrial

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  6. Dreissena polymorpha (Pallas, 1771) – Zebra Mussel non-native

    Species, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

  7. Dreissena rostriformis bugensis Andrusov, 1897 – Quagga Mussel non-native

    Subspecies, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Prevention

  8. Elodea nuttallii (Planch.) H. St. John – Nuttall's Waterweed non-native

    Species, Flowering plant, Freshwater

    Esthwaite Water-Weed, Nuttall's Water-Weed, Ffugalaw Nuttall, Alaw Nuttall

    Establishment status: GB Establishment Status - Established

  9. Eriocheir sinensis H. Milne Edwards, 1853 – Chinese Mitten Crab non-native

    Species, Crustacean, Freshwater, marine, terrestrial

    Establishment status: GB Establishment Status - Established

    Wales marine risk assessment: Monitoring: high

  10. Fallopia japonica (Houtt.) Ronse Decr. – Japanese Knotweed non-native

    Species, Flowering plant, Freshwater, terrestrial

    Clymog Japan

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  11. Gunnera tinctoria (Molina) Mirb. – Giant-rhubarb non-native

    Species, Flowering plant, Freshwater, terrestrial

    Giant Rhubarb, Rheonllys Mawr

    Establishment status: GB Establishment Status - Established

  12. Heracleum mantegazzianum Sommier & Levier – Giant Hogweed non-native

    Species, Flowering plant, Freshwater, terrestrial

    Efwr Enfawr

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  13. Hydrocotyle ranunculoides L. f. – Floating Pennywort non-native

    Species, Flowering plant, Freshwater

    Dail-Ceiniog Arnofiol

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  14. Impatiens glandulifera Royle – Himalayan Balsam non-native

    Species, Flowering plant, Freshwater, terrestrial

    Policeman's Helmet, Indian Balsam, Jac y Neidiwr, Penwisg Ddur Heddwas, Cap Dur Heddwas, Ffromlys Chwarennog

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  15. Lagarosiphon major (Ridl.) Moss ex V.A. Wager – Curly Waterweed non-native

    Species, Flowering plant, Freshwater

    Ffugalaw Crych, Pib-Flodyn Crych

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  16. Ludwigia grandiflora (Michx.) Greuter & Burdet – Water Primrose non-native

    Species, Flowering plant, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  17. Ludwigia grandiflora subsp. hexapetala (Hook. & Arn.) G.L. Nesom & Kartesz – Uruguayan Hampshire-purslane non-native

    Subspecies, Flowering plant, Freshwater

    Establishment status: GB Establishment Status - Established

  18. Lysichiton americanus Hultén & H. St. John – American Skunk-cabbage non-native

    Species, Flowering plant, Freshwater, terrestrial

    Skunk Cabbage, Pidyn-y-Gog Americanaidd

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  19. Myriophyllum aquaticum (Vell.) Verdc. – Parrot's-feather non-native

    Species, Flowering plant, Freshwater

    Parrot's Feather, Pluen Parot

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  20. Myriophyllum heterophyllum Michx. – Various-leaved Water-milfoil non-native

    Species, Flowering plant, Freshwater

    Water-Milfoil

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Prevention

[counting] records from [counting] taxa

This map contains both point- and grid-based occurrences at different resolutions