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. 2014 Aug 6;9(8):e104144. doi: 10.1371/journal.pone.0104144

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© 2014 Carreiras et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Location of the three study sites: Manaus, Santarém and Machadinho d’Oeste (M. d’Oeste), and the insertion (bottom left) of the Brazilian Legal Amazon (dark grey) in Brazil (light grey) and South American continent. Also shown are the major rivers included in the Amazon basin.