Caracterização físico-química e avaliação das concentrações de elementos maiores e traços em sedimentos areno-lamosos do estuário de Diogo Lopes, litoral setentrional do estado do Rio Grande do Norte, Brasil

Abstract

In this research was held the physicochemical characterization of Diogo Lopes Estuary sand-muddy banks, as well as the assessment of major and trace elements concentrations in sediments of mangrove fringe; as a way of subsidizing the mitigating measures related to the containment of erosive processes in the study area. Through remote sensing images it was possible to make an analogy between the spectral characteristics of wetlands and vegetation areas (mangrove), showing the possibility to do a restoration of that area, contributing to the environmental monitoring of that ecosystem. Thus, the methodological strategy has established to December/2008 an area about 1,013 ha of sand-muddy banks, which of these approximately 89 ha viable to be used in a reforestation with the typical mangrove flora. The methodological approach allowed a better understanding of the features physicochemical activities and as a result it allows to the efficiency/capability analysis of sand-muddy banks to reforestation with typical mangrove species, which means a consequent reduction of the erosive action that impacts hydrocarbons exploitation oil fields of Macau and Serra, Potiguar Basin, Northeast Brazil