The Mollusca of acid woodland in the Italian province of Novara

A rich fauna of 55 species of terrestrial molluscs was obtained from 14 sites in acidic woodland (pH range 3.8–5.3) in the southern Alps. The flora and fauna of the sites were investigated using principal coordinates analysis, and the interpretation of some of the major directions of variation was possible. In overall terms however, vegetation and soil pH proved to be poor at accounting for variations in the snail fauna.