Definition of Favourable Conservation Status for Round-mouthed Whorl Snail, Vertigo genesii.
This document sets out Natural England's view on Favourable Conservation Status (FCS) for Vertigo genesii in England. Favourable conservation status is defined in terms of 3 parameters: natural range and distribution; population; and extent and quality of habitat necessary for long-term maintenance of populations. Section 2 provides the summary definition of favourable conservation status in England. Section 3 covers contextual information, section 4 the units used, and section 5 describes the evidence considered when defining favourable conservation status for each of the three parameters. Section 6 sets out the conclusions on favourable values for each of the 3 parameters.