Invasive Non-Native Species

There are close to 1000 non-native species in Scotland and most don’t cause any problems. A small number do and these are known as invasive non-native species. Invasive non-native species cause huge problems for our native wildlife and often have an impact on the economy. It is estimated that invasive species cost the British economy £1.7 billion every year.

To find out more about a particular species and the threat is poses to the River Annan click on the links below.

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If you wish to report an invasive species you can contact us on . Please provide as much detail as you can particularly regarding the location. Any photos you can take would be greatly appreciated.

​Japanese knotweed (Fallopia japonica)

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​Himalayan Balsam​ (Impatiens glandulifera)

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​Giant Hogweed

(Heracleum mantegazzianum)

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​American Mink (Neovison vison)

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Image: John McAvoy

Invasive species already present

​American​ Skunk Cabbage

(Lysichiton americanus​​​​)

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American Signal Crayfish

(Pacifastacus leniusculus)

 

 

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Potential Threats to the River Annan

​​Killer Shrimp

(Dikerogammarus villosus)

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