The impact of dredging of sediments in the port of Salaverry, main center of transport of agriculture products, minerals, petroleum and others was evaluated. The last dredging carried out in august of 2014, removed 1 163, 000 m3 of the marine bottom sediments, with a hidraulic dredge which, were sucked out and lay aside wear the port área, at the left  the right of fishermen platform.  Main chemical contaminants were determined (Pb,Zn,Cd,Cu) indicatives of the port activity . Investigations was carried out in both zones, where samples of the sediments and superficial wáter, birds and fishes were taken. The values of heavy metals were higher than the maximum permited limit according the international standars, performing negative effects on the coastal marine ecosystems making a risk to the public healt.

Objective. To describe the impacts of the preliminary works of what will be the megaport of Chancay (Peru), referred to the transformation of the coastal strip of the bay. Methods. The study had a qualitative approach and resorted to a combination of environmental history methodology and the use of photographs to visualize the changes that have occurred in the bay over time. Results. There was evidence of transformation in the configuration of the coastal area of the bay due to anthropic action, which can be summarized in the annulment of the bay's function that generated the alteration of the coastline, sedimentation processes and alteration of the coastal marine ecosystem. Conclusions. The bay of Chancay and its coastal strip have been transformed by the preliminary works of what will be a megaport. The transformation has meant the loss of the beach as a recreational space and habitat ...