en fr Study of bioremediation of contaminated sediment by polycyclic armatic hydrocarbons : ecological impact on microflora and meiofauna of the Bizerta lagoon Etude de la biorémédiation de sédiments contaminés par des hydrocReportar como inadecuado




en fr Study of bioremediation of contaminated sediment by polycyclic armatic hydrocarbons : ecological impact on microflora and meiofauna of the Bizerta lagoon Etude de la biorémédiation de sédiments contaminés par des hydroc - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1 Ecosym - Ecologie des systèmes marins côtiers

Abstract : Polycyclic aromatic hydrocarbons PAHs are persistent organic pollutants POP emitted mainly by human activities due to the incomplete combustion of organic matter industry, heating, traffic



Because of their low rate of degradation, their toxicity and their bioaccumulation, PAHs are main of concern in ecological studies. In this context, the objectives of this thesis were to assess the impact of PAHs on the benthic microflora and meiofauna and apply different techniques of bioremediation biostimulation, bioaugmentation and combination of both treatments in order to degrade PAHs, using experimental approach with microcosms.Our results showed that PAHs are toxic for microflora but also for meiofauna of Bizerta lagoon. The toxic effects of these contaminants were demonstrated by the inhibition of bacterial activity in the sediment-water interface and by profound changes in the structure of bacterial communities. PAHs provoked significant changes on meiofaunal community with the selection of nematode species that could be proposed as bioindicators of PAH pollution. Thus, Spirinia parasitifera which significantly p



Autor: Héla Louati -

Fuente: https://hal.archives-ouvertes.fr/



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