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  • Species list: NRW Sustainable Management of Natural Resources (SMNR)
  • Habitat: freshwater

Wales marine risk assessment

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Priority species for Wales

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Showing 1 - 20 of 47 taxa

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

    Species, Flowering plant, Freshwater, terrestrial

    Giant Rhubarb, Rheonllys Mawr

    Establishment status: GB Establishment Status - Established

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

    Species, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  3. Eichhornia crassipes (Mart.) Solms – Water-hyacinth non-native

    Species, Flowering plant, Freshwater

    Establishment status: GB Establishment Status - Not established

  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. 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

  6. Salvinia molesta Mitchell – Giant Salvinia

    Species, Fern, Freshwater

  7. 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

  8. Oxyura jamaicensis (Gmelin, JF, 1789) – Ruddy Duck non-native

    Species, Bird, Freshwater, terrestrial

    Hwyaden Goch, Hwyaid Coch

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  9. Echinogammarus ischnus (Stebbing, 1899) non-native

    Species, Crustacean, Freshwater, marine

    Establishment status: GB Establishment Status - Absent

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

    Species, Flowering plant, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  11. 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

  12. Procambarus fallax f. virginalis (Martin et al, 2010) – Marbled Crayfish non-native

    Form, Crustacean, Freshwater, terrestrial

    Marmorkrebs

    Establishment status: GB Establishment Status - Absent

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

    Species, Crustacean, Freshwater, terrestrial

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Prevention

  14. 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

  15. Silurus glanis Linnaeus, 1758 – Wels Catfish non-native

    Species, Bony fish (Actinopterygii), Freshwater, terrestrial

    Catfish, Danube Catfish, Wels, Pencath, Pencathod

    Establishment status: GB Establishment Status - Established

  16. Ameiurus melas (Rafinesque, 1820) – Black Bullhead non-native

    Species, Bony fish (Actinopterygii), Freshwater, marine, terrestrial

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Prevention

  17. 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

  18. Ondatra zibethicus (Linnaeus, 1766) – Musk Rat non-native

    Species, Terrestrial mammal, Freshwater, terrestrial

    Establishment status: GB Establishment Status - Exterminated

  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. Xenopus laevis (Daudin, 1802) – African Clawed Toad non-native

    Species, Amphibian, Freshwater, terrestrial

    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