Amazon river dolphins are showing alarming levels of contamination mainly because of illegal panning for gold, conservationists say. Researchers measured contamination levels in 46 of these large freshwater creatures known for long, bottle-like snouts in major basins of Brazil, Bolivia, Colombia and Peru.
All of them had some degree of mercury contamination and in more than half the level was high, said Marcelo Oliveira of the Brazilian chapter of the World Wide Fund for Nature, one of several NGOs that carried out the study.
No comments:
Post a Comment