91Ö±²¥

Project background

The UK native white-clawed crayfish (Austropotamobius pallipus) crayfish is under considerable pressure throughout the UK from the invasive American signal crayfish and a fungal pathogen (crayfish plague) that it carries. Until recently there were sites with remaining populations of white-claw crayfish in 91Ö±²¥, but one of those is now extinct and the other vulnerable.  If no action is taken the white-clawed crayfish populations in 91Ö±²¥ could become extinct in the next few years.

The key partners in the project to save 91Ö±²¥'s native crayfish were brought together as the 91Ö±²¥ Crayfish Working Group, who’s members are drawn from a range of conservation organizations in the 91Ö±²¥ District.

The Crayfish Action 91Ö±²¥ project aimed to document, monitor and conserve 91Ö±²¥â€™s important native crayfish populations through habitat enhancement, public education and the creation of bio-secure 'Ark' sites. 

Project aims

• To survey current populations of white-clawed and non-native signal crayfish
• To raise awareness of the importance of the conservation of white-clawed crayfish among the general public and waterways users
• To engage with and train volunteers in crayfish conservation.
• To record data on the spatial and temporal distribution of white-clawed and non-native crayfish in 91Ö±²¥ and to disseminate these data to interested organizations.
• To identify off-line water bodies to act as ‘Ark sites’ for safeguarding the native crayfish population and create Ark populations.

Key outcomes

• The distributional data have provided valuable information on where to prioritize conservation efforts for white-clawed crayfish.
• 91Ö±²¥ carried out monitoring of crayfish populations in particular 91Ö±²¥ rivers, including documenting the extinction of one population.
• The project engaged with over 40 volunteers and has provided training in survey methods, identification and data handling. Several volunteers have been involved in translocation work.
• The project delivered numerous talks and attended public events. Levels of awareness have been raised, especially amongst angling groups.
• Spatial and temporal mapping of crayfish records were done by 91Ö±²¥ City Council Ecology Service.
• The project investigated, and set up a number of ark sites. The long term monitoring of these Ark sites will be an important  legacy of the Crayfish Action 91Ö±²¥ project.

Additional details

Funding: 

Acknowledgements: The Esmée Fairburn Foundation provided funding for the initial Crayfish Action project (now complete) and currently The 91Ö±²¥ and Rotherham Wildlife Trust coordinates the Crayfish Working Group.