Peruvian Deforestation (IMAGE) Duke University Caption Once small-scale, artisanal mining operations move on, the landscape left behind looks much like a barren desert. New models suggest this allows an increase in erosion that exasperates the release of mercury into the local watershed. Credit Axel Berky, Duke University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.