Between 2001 and 2004, 623 samples of freshwater molluscs were gathered in Hamburg and examined. In this way about 2207 sets of data indicating the presence of the genus Sphaerium, Musculium and Pisidium were found which have been ecostatistically evaluated by applying different criteria. A method of mathematically evaluation of the degree of endangerment of the Sphaeriidae in Hamburg is presented.

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Nederlandse Malacologische Vereniging

P. Glöer. (2006). Der Gefährdungsgrad der Sphaeriidae (Bivalvia, Veneroida) in Hamburg. Basteria, 70(Suppl. 3), 29–37.