The observed area is a subneutral-oligotroph bog near Walchsee (altitude 660 m), situated in Northern Tyrol, Austria (to the east of Kufstein), called ´Schwemm´ and a pool next to it. The samples were taken by the author in the summer 1999. The bog originates from a glacial sea. The substratum consist of sand and rubble. Overall about 220 taxa of desmids were ascertained, 20 of them are extremely rare in Central Europe, three are newly recorded for Central Europe and one taxon is absolutely new for Europe (Euastrum attenuatum var. splendens). It is supposed that some of the rare and newly recorded taxa are remnants of the glacial-period. The samples were taken from shallow pools in the centre (acid environment) and the margins of the area (faint acid enviroment).
Image copyright: Prof. Rupert Lenzenweger, image used under license to MBL (micro*scope).