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  • Species list: WFD UKTAG aquatic alien species impact
  • WFD UKTAG impact: High

Wales marine risk assessment

Priority species for Wales

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Showing 1 - 20 of 44 taxa
  1. Gunnera manicata Linden ex André – Brazilian Giant-rhubarb non-native

    Species, Flowering plant, Terrestrial

    Brazilian Giant Rhubarb, Rheonllys Pigog, Rheonllys Mawr Brasil

    Establishment status: GB Establishment Status - Established

  2. Hemigrapsus takanoi Asakura & Watanabe, 2005 non-native

    Species, Crustacean, Marine

    Establishment status: GB Establishment Status - Established

    Wales marine risk assessment: Surveillance: high

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

    Species, Flowering plant, Freshwater, terrestrial

    Giant Rhubarb, Rheonllys Mawr

    Establishment status: GB Establishment Status - Established

  4. Styela clava Herdman, 1881 – Leathery Sea Squirt non-native

    Species, Tunicate (Urochordata), Marine

    Establishment status: GB Establishment Status - Established

    Wales marine risk assessment: Monitoring: medium

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

    Species, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  6. Hemimysis anomala G.O. Sars, 1907 non-native

    Species, Crustacean, Freshwater, marine, terrestrial

    Establishment status: GB Establishment Status - Established

  7. 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

  8. 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

  9. Persicaria wallichii Greuter & Burdet – Himalayan Knotweed non-native

    Species, Flowering plant, Freshwater, terrestrial

    Y Ganwraidd Himalaiaidd, Clymog yr Himalaya

    Establishment status: GB Establishment Status - Established

  10. 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

  11. Rangia cuneata G.B Sowerby I, 1831 – Gulf Wedge Clam non-native

    Species, Mollusc, Freshwater

    Atlantic Rangia

    Establishment status: GB Establishment Status - Established

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

    Species, Flowering plant, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  13. Didemnum vexillum Kott, 2002 non-native

    Species, Tunicate (Urochordata), Marine

    Establishment status: GB Establishment Status - Established

    Wales marine risk assessment: Monitoring: high

  14. 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

  15. Ficopomatus enigmaticus (Fauvel, 1923) non-native

    Species, Annelid, Marine

    Establishment status: GB Establishment Status - Established

    Wales marine risk assessment: Monitoring: medium

  16. Orconectes virilis (Hagen, 1870) – Virile Crayfish non-native

    Species, Crustacean, Freshwater, terrestrial

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Prevention

  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. Pacifastacus leniusculus (Dana, 1852) – Signal Crayfish non-native

    Species, Crustacean, Freshwater, terrestrial

    American Signal Crayfish

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Long-term management

  19. 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

  20. Crepidula fornicata (Linnaeus, 1758) – American Slipper Limpet non-native

    Species, Mollusc, Marine

    Slipper limpet

    Establishment status: GB Establishment Status - Established

    Wales marine risk assessment: Monitoring: high

[counting] records from [counting] taxa

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