RISC Non-Native Species Records for Zebra Mussel

Recording Invasive Species Counts (www.nonnativespecies.org/recording/) was launched in 2010 and includes on-line recording for 19 species including: Zebra mussel, Dreissena polymorpha https://secure.fera.defra.gov.uk/nonnativespecies/factsheet/factsheet.cfm?speciesId=1250 The data is predominantly provided by members of the public but records are verified from photos by designated experts. The recording form includes the option to provide abundance and whether the individual is dead or alive (or unknown).