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. 2014 Dec 10;5:437. doi: 10.3389/fgene.2014.00437

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Copyright © 2014 Costa, Pinto, Vicente, Gonçalves, Rodrigo, Louro, Costa, Caeiro and Silva.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Map of the river Sado Estuary, Portugal, highlighting the two study areas: Sado 1 (north) and Sado 2 (south). Sediment collection sites and organism fishing grounds for each area are also indicated. Refer to the legend for specifics.