A global analysis of fish biodiversity using environmental DNA (eDNA) reveals how human activity and climate influence biodiversity patterns in river ecosystems. An international research team led by the University of Zurich, Eawag and Yunnan University has found that in warmer climates, biodiversit y accumulation is more pronounced as river catchment size increases, while human activities weaken this relationship. The work is published in the journal Nature Ecology Evolution. ...read more read less