The Recording Invasive Species Counts (RISC) project is a way to find out more and to contribute to our understanding of the distribution and ecology of non-native species. It is co-ordinated by the NBN and BRC (part of the Centre for Ecology & Hydrology), in partnership with recording schemes for the animals and plants. The project is funded by Defra. 

We hope you will get involved by sending in your records of the following species.  

Animals:

• American bullfrog (external link)
• Asian Hornet (external link)
• Carpet Sea-squirt (external link)
• Chinese Mitten-crab (external link)
• Citrus longhorn beetle (external link)
• Killer Shrimp (external link)
• Muntjac deer (external link)
• Quagga Mussel (external link)
• Rhododendron leaf-hopper (external link)
• Signal crayfish (external link)
• Southern green shieldbug (external link)
• Western conifer seedbug (external link)
• Zebra mussel (external link)

Plants:

• American skunk-cabbage (external link)
• Floating pennywort (external link)
• Himalayan balsam (external link)
• Rhododendron (external link)
• Tree of heaven (external link)
• Wakame (external link)
• Water fern (external link)
• Water primrose (external link)

Read more about non-native species

Other schemes

Other non-native species recording schemes that might be of interest include:

• Oak Processionary Moth (external link)
• Horse chesnut leaf miner (external link)
• Black Squirrels (external link)
• Bleeding Canker of Horse Chesnut (external link)