D2.4 Dragonflies and insecticides

Description of the comparison of dragonfly abundance, based on citizen science counts, and insecticides detected in the water at these transects, sampled by the citizen scientists. The dragonfly monitoring is part of the Dutch Dragonfly Monitoring Scheme, coordinated by Dutch Butterfly Conservation. This publication includes a description of the development and testing of a method to analyze insecticides in surface waters by the Leiden Centre for Applied Bioscience.