"In streams without siltation, diatoms are strongly attached," he said. "In strongly disturbed streams, the diatom genera are not attached and are very mobile."
For the study, Tudesque and his colleagues collected and analyzed diatoms at 10 different sites affected by gold mining activity in French Guiana. This overseas region of France, bordering Brazil and Suriname, has 90 percent rainforest coverage with rich tropical wilderness areas
According to the authors, gold mining activities, including illegal mining sites, have increased, "potentially leading to
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