Centre for Ecology & Hydrology
![](https://www.shiregroup-idbs.gov.uk/wp-content/uploads/2016/08/DSC_0396-Lea-marshes-drain-butterfly-caterpillar-Copy.jpg)
Centre for Ecology and Hydrology produced information sheet
inns-canadian-pondweed-control
inns-duck-weed-lemna-sp-control
Centre for Ecology and Hydrology produced information sheet
inns-canadian-pondweed-control
inns-duck-weed-lemna-sp-control