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Conservation of an endangered naiad Margaritifera auricularia in Ebro river (Catalunya) (Margaritifera Cataluña)
Date du début: 1 janv. 2001, Date de fin: 31 déc. 2004,
Background
Margaritifera auricularia is a large bivalve mollusc (measuring up to 20 cm). It belongs to the oldest family of freshwater mussels (also known as pearl mussels) and used to be common in all the large rivers of western Europe and northern Africa up to the 15th century. Since then its area of distribution has been drastically reduced to the poi ...
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