Dams disrupt sediment and hydrologic connectivity, fragmenting river ecosystems and altering geomorphic and ecological processes. In response ... to dam removals and channel restoration in steep ...

especially in mountain regions. Soil erosion is of special concern in agricultural lands, but agriculture is only one of many development activities that greatly accelerates soil erosion processes.

The ancient mountains of the Andes are home to spectacled bears ... planted as many as 100,000 trees in a single day, using a ...