Biologists call for network of protected rivers

An international research team has used the Guadiana River basin, in which 92% of the species are under threat, as a reference point to measure the loss of aquatic biodiversity and its conservation value. A new study reveals that the state of fragmentation of Iberian river basins is 'seriously endangering' the freshwater fish that inhabit them, and highlights the need to create new protected aquatic reserves...

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