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Large freshwater mussels Unionoidea in the border area of Bavaria, Saxonia and the Czech Republic (Grossmuscheln)
Date du début: 1 août 2002, Date de fin: 31 juil. 2007,
Background
Although the Annex II freshwater mollusc Margaritifera margaritifera is colloquially named the freshwater pearl mussel, only one in 7 000 of these sensitive mussels produces tiny pearls. Some 30 000 of the species, 20% of the total population in Germany, live in streams in the project area, a species rich man-made landscape located at the bord ...
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