De malacofauna van Rottumeroog. Verslag van een inventarisatie in het kader van het Project Habslak en het Atlasproject Nederlandse Mollusken

In September 2006, the authors and Mr. Herman Roode made an inventory of the malacofauna of the Waddenzee island Rottumeroog. The results are reported here. Due to the limited access to the island, the malacofauna was not very well known. 18 terrestrial species were found. The most remarkable was Vertigo angustior, which is included in Annex II of the EU Habitat Directive. Although this species is more frequently found in the dunes along the west coast of the Netherlands, this is only the third observation of this species in the Waddensea region. Freshwater molluscs do no longer live on Rottumeroog, and no living species from brackish water were found. In the direct surroundings of the island 9 species of marine molluscs were found alive.