Abstract
Dredging activity may cause sediment resuspension, altering water quality regarding to dissolved oxygen and conductivity (measured in the field), turbidity, total suspended solids and nutrients (such as phosphorus and total organic carbon), analyzed in the laboratory. In this work ten sampling campaigns were performed in four areas of Santos harbor’s navigation channel, with different grain sizes, in order to monitor along one hour, the variation of these parameters in the sediment plume formed due to dredging activity. A previous campaign was carried out before dredging activities. This study showed that despite of variations in the results of the investigated parameters, these variations are of small magnitude and of short duration.
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