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Sturgeons and other migratory fish species represent a historic, economic and natural heritage of the Danube River Basin and are indicators of the ecological status of aquatic ecosystems, especially of the functionality of ecological corridors. Their populations have suffered substantially from overfishing, pollution, habitat destruction and disruption of their migration routes. The need for their conservation is recognized at a high political and management level (EUSDR-PA 06, Biodiversity, DRBMP).

Over-exploitation of water resources, water regime modifications, water contamination, and a growing number of flood events – negative effects of which are amplified by climate change – are all issues that require harmonised, integrated actions from management authorities in countries that share river basins.