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Kinetics of the PO4-P adsorption onto soils and sediments from the Mondego estu...
Otero, M.; Coelho, J. P.; Rodrigues, E. T.; Pardal, M. A.; Santos, E. B. H.; Esteves, V. I.; Lillebo, A. I.In order to assess the status of a North Atlantic Ocean Ecoregion (Mondego system, Portugal) after the implementation of a management programme, a study on PO4-P sorption was carried out. Considering that sorption velocity markedly determines the systems promptness to phosphorus external loading, the kinetics of the sorption of PO4-P onto estuarine sediments and the upstream agricultural soils was studied. The ...
Sorption-Desorption Behavior of Atrazine on Soils Subjected to Different Organi...
Lima, D. L. D.; Schneider, R. J.; Scherer, H. W.; Duarte, A. C.; Santos, E. B. H.; Esteves, V. I.Sorption of atrazine on soils subjected to three different organic amendments was measured using a batch equilibrium technique. A higher K(F) value (2.20 kg(-1)(mg L(-1))(-)N) was obtained for soil fertilized with compost, which had a higher organic matter (OM) content. A correlation between the K(Foc) values and the percentage of aromatic carbon in OM was observed. The highest K(Foc) value was obtained for the...
A margem do rio Minho entre Melgaço e Monção: alguns aspectos do património geo...
H. Esteves; I. Fernandes; C. VasconcelosThe Minho’s river-side is characterized for abundant joints mainly in granitic lithologies. Small spots of metassediments and sedimentary formations exist, fluvial terraces and alluviums. The fluvial phenomena, associated to the tectonic and the lithology, are responsible for the Geodiversity. Thus, the Geologic Heritage congregates rock outcrops, faults and other discontinuities, sedimentary deposits, fi...
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