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Large-scale hydroelectric dams on Andean rivers disrupt river connectivity to the Amazon.

Andean dams versus Amazonian biodiversity

A recent scientific study warns of the multiplication of large-scale hydroelectric dams on the Andean tributaries of the Amazon. These installations break up watercourses and pose a threat to the biodiversity and hydrological regime of the entire basin.
peche-el-nino

El Niño and weather hazards

The El Niño events of 2015 and 2016, heralded by similar early signs, had very divergent amplitudes. Their modelling highlights the importance of unpredictable high-frequency winds. The ability to predict the phenomenon is therefore severely limited.