Responses of a free-living benthic marine ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Responses of a free-living benthic marine nematode community to bioremediation of a PAH mixture
Author(s) :
Louati, Hela [Auteur]
Said, O.B. [Auteur]
Soltani, Ali [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Cravo-Laureau, Cristiana [Auteur]
Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
Duran, Robert [Auteur]
Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
Aissa, Patricia [Auteur]
Faculté des Sciences de Bizerte [Université de Carthage]
Mahmoudi, E. [Auteur]
Faculté des Sciences de Bizerte [Université de Carthage]
Pringault, O. [Auteur]
Ecosystèmes lagunaires : organisation biologique et fonctionnement [ECOLAG]
Said, O.B. [Auteur]
Soltani, Ali [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Cravo-Laureau, Cristiana [Auteur]
Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
Duran, Robert [Auteur]
Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
Aissa, Patricia [Auteur]
Faculté des Sciences de Bizerte [Université de Carthage]
Mahmoudi, E. [Auteur]
Faculté des Sciences de Bizerte [Université de Carthage]
Pringault, O. [Auteur]
Ecosystèmes lagunaires : organisation biologique et fonctionnement [ECOLAG]
Journal title :
Environmental Science and Pollution Research
Pages :
15307-15318
Publisher :
Springer Verlag
Publication date :
2015
ISSN :
0944-1344
HAL domain(s) :
Sciences du Vivant [q-bio]/Ecologie, Environnement
English abstract : [en]
The objectives of this study were (1) to assess the responses of benthic nematodes to a polycyclic aromatic hydrocarbon (PAH) contamination and (2) to test bioremediation techniques for their efficiency in PAH degradation ...
Show more >The objectives of this study were (1) to assess the responses of benthic nematodes to a polycyclic aromatic hydrocarbon (PAH) contamination and (2) to test bioremediation techniques for their efficiency in PAH degradation and their effects on nematodes. Sediments with their natural nematofauna communities from Bizerte lagoon (Tunisia) were subjected to a PAH mixture (100 ppm) of phenanthrene, fluoranthene, and pyrene during 30 days. Nematode abundance and diversity significantly decreased, and the taxonomic structure was altered. Results from multivariate analyses of the species abundance data revealed that PAH treatments were significantly different from the control. Spirinia parasitifera became the dominant species (70 % relative abundance) and appeared to be an “opportunistic” species to PAH contamination while Oncholaimus campylocercoides and Neochromadora peocilosoma were strongly inhibited. Biostimulation (addition of mineral salt medium) and bioaugmentation (inoculation of a hydrocarbonoclastic bacterium) were used as bioremediation techniques. Bioremediation treatments enhanced degradation of all three PAHs, with up to 96 % degradation for phenanthrene resulting in a significant stimulation of nematode abundance relative to control microcosms. Nevertheless, these treatments, especially the biostimulation provoked a weak impact on the community structure and diversity index relative to the control microcosms suggesting their feasibility in biorestoration of contaminated sediments.Show less >
Show more >The objectives of this study were (1) to assess the responses of benthic nematodes to a polycyclic aromatic hydrocarbon (PAH) contamination and (2) to test bioremediation techniques for their efficiency in PAH degradation and their effects on nematodes. Sediments with their natural nematofauna communities from Bizerte lagoon (Tunisia) were subjected to a PAH mixture (100 ppm) of phenanthrene, fluoranthene, and pyrene during 30 days. Nematode abundance and diversity significantly decreased, and the taxonomic structure was altered. Results from multivariate analyses of the species abundance data revealed that PAH treatments were significantly different from the control. Spirinia parasitifera became the dominant species (70 % relative abundance) and appeared to be an “opportunistic” species to PAH contamination while Oncholaimus campylocercoides and Neochromadora peocilosoma were strongly inhibited. Biostimulation (addition of mineral salt medium) and bioaugmentation (inoculation of a hydrocarbonoclastic bacterium) were used as bioremediation techniques. Bioremediation treatments enhanced degradation of all three PAHs, with up to 96 % degradation for phenanthrene resulting in a significant stimulation of nematode abundance relative to control microcosms. Nevertheless, these treatments, especially the biostimulation provoked a weak impact on the community structure and diversity index relative to the control microcosms suggesting their feasibility in biorestoration of contaminated sediments.Show less >
Language :
Anglais
Popular science :
Non
Comment :
cited By 1
Source :