Aliens invade Cornwall's ponds

A new service to help tackle invasive pond species is being launched by Cornwall Wildlife Trust.

Pond Check aims to raise awareness of the threat of non-native plants that are invading Cornish ponds and waters.

The free service is targeting six of the most invasive aquatic plants including creeping water primrose, floating pennywort, parrot’s feather, New Zealand pygmy weed, large flowered water weed and the curly waterweed.

All these species can still be found and bought in garden centres, aquarists and DIY stores. These invasive plants can pose a great threat to the environment and biodiversity by displacing local wildlife, and changing habitats.

The public will now be able to send a photograph of their nuisance pond invaders via mobile straight from the field or garden.

The species will be identified from the image and the sender will be contacted with advice on management and disposal.

Lisa Rennocks is the investigative invasive project oficer for the Environmental Records Centre for Cornwall and the Isles of Scilly (ERCCIS). 

"Some non-native plant species associated with freshwaters are often more vigorous than native species," she said.  "They can form dense mats that choke up natural water bodies, disrupt water flow and impede drainage systems, increasing the risk of flooding."

If you are unsure about which plant is invading your pond you can let the ERCCIS identify it .  Text POND to 60300 with your name, postcode and a clear image, or  email pondcheck@cornwt.demon.co.uk.

You can also download recording forms from their website if you wish to survey a local pond, or simply fill in an online survey form. Find out more by clicking here.

Cornwall Wildlife Trust manages 55 nature reserves all over the county, including a range of habitats such as woodlands, meadows, wetlands and heaths.