Almost a quarter of main freshwater species including fish, shrimps and crabs are threatened with extinction, worldwide research involving thousands of experts has found.
The creatures in highly diverse ecosystems that help prevent flooding, mitigate climate change and recycle vital nutrients are suffering from human activities including pollution, dams and shifts in agricultural land use.
The study examined more than 23,000 animals on the International Union for Conservation of Nature (IUCN) “red list” of threatened species, which was published in the Nature journal. It uses public data sources and about two decades of work by more than 1,000 scientists, including taxonomists and those working directly with species in their environments.
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