The decline of native Pacific island faunas: changes in status of the land snails of Samoa through the 20th century§

Abstract

The highly diverse and endemic Pacific island biota is disappearing and being replaced by a relatively small number of widespread alien species. The land snail fauna of Samoa (formerly Western Samoa) contains at least 72 species (58 native, 10 alien, four cryptogenic—of unknown origin). In 1992–1994 we surveyed the fauna in order to evaluate its status and… (More)

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