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A long-term monitoring plan was established to study if bird populations around Donana National Park were affected by the toxic spill from the Aznalcollar mine. The concentrations of Zn, Pb, As, Cu, Sb, Co, Tl and Cd in the blood of 11 bird species feeding in the area were determined. The parameters which most affect the accumulation of trace elements in the birds studied are, firstly, species and,...
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