ALERT Non-Native Species Records for Signal Crayfish

Recording Invasive Species Counts (www.nonnativespecies.org/recording/) was launched in 2010 and includes on-line recording for 19 species including: Signal Crayfish, Pacifastacus leniusculus https://secure.fera.defra.gov.uk/nonnativespecies/factsheet/factsheet.cfm?speciesId=2498 The Signal Crayfish is designated as an ALERT species and also within RISC. 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).