Human Impacts on global freshwater fish biodiversity

A new index, Cumulative Change in Biodiversity Facets, revealed marked changes in biodiversity in >50% of the world’s rivers covering >40% of the world’s continental surface and >37% of the world’s river length, whereas <14% of the world’s surface and river length remain least impacted. Present-day rivers are more similar to each other and have more fish species with more diverse morphologies and longer evolutionary legacies. In temperate rivers, where the impact has been greatest, biodiversity changes were primarily due to river fragmentation and introduction of non-native species.

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Su G., M. Logez, J. Xu, S. Tao, S. Villeger, and S. Brosse

Publication Date

19 Feb 2021

Publication Name



Cumulative Change in Biodiversity, Freshwater, Fish morphology