HUMAITÁ, Brazil — The Madeira Basin, the most biodiverse region in the Amazon River Basin, boasts 1,406 catalogued species. However, this ecological richness is under threat from human activities and the climate crisis. Hydropower plants on the Madeira River have disrupted the natural hydrological cycle, leading to irregular water pulses that interfere with fish migratory patterns. … Continue reading Hydropower dams threaten fishing communities on the Amazon