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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. Alopochen aegyptiaca (Linnaeus, 1766) – Egyptian Goose non-native

    Species, Bird, Freshwater, marine, terrestrial

    Gwydd yr Aifft, Gwyddau yr Aifft

    Establishment status: GB Establishment Status - Established

  2. 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

  3. 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

  4. Cabomba caroliniana A. Gray – Carolina Water-shield non-native

    Species, Flowering plant, Freshwater

    Carolina Water Shield, Tarian-y-Dŵr Carolina

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Prevention

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

    Species, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Management

  6. 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

  7. Crocosmia pottsii x aurea = C. x crocosmiiflora (Lemoine) N.E. Br. – Montbretia non-native

    Species hybrid, Flowering plant, Freshwater, terrestrial

    Montbretlys, Crib-y-Ceiliog

    Establishment status: GB Establishment Status - Established

  8. 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

  9. 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

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

    Species, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

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

    Subspecies, Mollusc, Freshwater

    Establishment status: GB Establishment Status - Established

    Priority species for Wales: Prevention

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

    Species, Crustacean, Freshwater, marine

    Establishment status: GB Establishment Status - Absent

  13. Echinogammarus trichiatus (Martynov, 1932) non-native

    Species, Crustacean, Freshwater, marine

    Establishment status: GB Establishment Status - Absent

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

    Species, Flowering plant, Freshwater

    Establishment status: GB Establishment Status - Not established

  15. 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

  16. 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

  17. 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

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

    Species, Flowering plant, Freshwater, terrestrial

    Giant Rhubarb, Rheonllys Mawr

    Establishment status: GB Establishment Status - Established

  19. 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

  20. 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

[counting] records from [counting] taxa

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