Total mercury (THg) concentrations mea-sured in two freshwater shrimp species( M a c ro b r a c h i u m d e p re s s i m a n u m a n d Macrobrachium jelskii ) showed a relationship withthe location of artisanal and small-scale gold min-ing (ASGM) from the Madeira River Basin, West-ern Amazon. Between August 2009 and May 2010,212 shrimp samples were collected in the conflu-ence of the Madeira River with three of...
Natural and anthropogenic factors contribute to the increase in suspension solids production in the Madeira River basin, being trace elements the main substances carried in suspension. Among these elements Hg is one representing greater risk to human health. This study on the high Madeira River basin investigate the seasonal variation of suspended matter and associated trace elements in two contrasting hydrolog...