Native Species and Habitats Threatened by Invasive Aliens
Alien species add to the existing pressures on the Irish environment and are a threat to biodiversity and conservation interests.
Native Irish species threatened by alien species:
- Red squirrel
- White clawed crayfish
- Red deer
- Earthworms
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Red Squirrel Red Deer
Irish habitats threatened by alien species:
- Freshwater river systems
- Ponds
- Mesotrophic lakes
- Native woodland
- Lowland heath
- Coastal flood plains
- Saltmarshes
- Sand dunes



©2007 Department of the Environment, Heritage and Local Government