Document of bibliographic reference 312832

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Responses of a free-living benthic marine nematode community to bioremediation of a PAH mixture

Abstract

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.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000363966900010

Bibliographic citation

Louati, H.; Said, O.B.; Soltani, A.; Cravo-Laureau, C.; Duran, R.; Aissa, P.; Mahmoudi, E.; Pringault, O. (2015). Responses of a free-living benthic marine nematode community to bioremediation of a PAH mixture. Environm. Sc. & Poll. Res. 22(20): 15307-15318. https://dx.doi.org/10.1007/s11356-014-3343-4

Topic

Marine

Is peer reviewed

true