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Recovery of populations of Margaritifera margaritifera and Galemys pyrenaicus inn the Ulla river basin (Galicia). (MARGAL ULLA)
Date du début: 1 sept. 2010, Date de fin: 31 août 2016,
Background
The Ulla river basin experiences different pressures that impact on aquatic species such as freshwater pearl mussel (Margaritifera margaritifera) and Pyrenean desman (Galemys pyrenaicus). Threats affecting these species include degradation of the river bed substrate, from dredging and siltation, degradation of riparian forest and difficulties f ...
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