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Concentrations of ammonium, manganese and iron were examined in sediment pore water and near-bottom water of inter-tidal sediments of Ria Formosa, a coastal lagoon in the South of Portugal, during the short period of time that water flooded the area. Short-sediment cores and overlying water retained during the ebb tide were sampled at air-exposed area. Immediately after the inundation sediment cores...
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