Five Rivers Environmental Contracting provide the full range of surveys for white-clawed crayfish and non-native crayfish. Survey methods include manual search, torching and trapping.
The United Kingdom has one native species, the white clawed crayfish (Austropotomobius pallipes), and seven known non-native invasive species in the wild. These are as follows:
- Signal Crayfish (Pacafastacus leniusculus)
- Turkish Crayfish (Astacus leptodactylus)
- Noble Crayfish (Astacus astacus)
- Spiny-Cheek Crayfish (Orconectes limosus)
- Virile Crayfish (Orconectes virilis)
- Red Swamp Crayfish (Procambarus clarkii)
- White River Crayfish (Procambarus acutus)
Populations of white-clawed crayfish have declined rapidly since the 1970s and remaining populations are under constant threat due to habitat loss and the introduction of non-native invasive species and associated crayfish plague.
Our specialist ecologists have held Natural England survey class licences for white-clawed crayfish for a number of years and are able to devise and carry out appropriate survey strategies for the needs of any project. We have extensive experience of carrying out non-native invasive crayfish surveys and have authored a number of peer-reviewed scientific papers on the subject.
We can advise on conservation strategies as well as containment and control measures for non-native invasive species.