Publications des scientifiques de l'IRD

Ben Said O., Louati H., Soltani A., Preud'homme H., Cravo-Laureau C., Got P., Pringault Olivier, Aissa P., Duran R. (2015). Changes of benthic bacteria and meiofauna assemblages during bio-treatments of anthracene-contaminated sediments from Bizerta lagoon (Tunisia). Environmental Science and Pollution Research, 22 (20), p. 15319-15331. ISSN 0944-1344.

Titre du document
Changes of benthic bacteria and meiofauna assemblages during bio-treatments of anthracene-contaminated sediments from Bizerta lagoon (Tunisia)
Année de publication
2015
Type de document
Article référencé dans le Web of Science WOS:000363966900011
Auteurs
Ben Said O., Louati H., Soltani A., Preud'homme H., Cravo-Laureau C., Got P., Pringault Olivier, Aissa P., Duran R.
Source
Environmental Science and Pollution Research, 2015, 22 (20), p. 15319-15331 ISSN 0944-1344
Sediments from Bizerta lagoon were used in an experimental microcosm setup involving three scenarios for the bioremediation of anthracene-polluted sediments, namely bioaugmentation, biostimulation, and a combination of both bioaugmentation and biostimulation. In order to investigate the effect of the biotreatments on the benthic biosphere, 16S rRNA gene-based T-RFLP bacterial community structure and the abundance and diversity of the meiofauna were determined throughout the experiment period. Addition of fresh anthracene drastically reduced the benthic bacterial and meiofaunal abundances. The treatment combining biostimulation and bioaugmentation was most efficient in eliminating anthracene, resulting in a less toxic sedimentary environment, which restored meiofaunal abundance and diversity. Furthermore, canonical correspondence analysis showed that the biostimulation treatment promoted a bacterial community favorable to the development of nematodes while the treatment combining biostimulation and bioaugmentation resulted in a bacterial community that advantaged the development of the other meiofauna taxa (copepods, oligochaetes, polychaetes, and other) restoring thus the meiofaunal structure. The results highlight the importance to take into account the bacteria/meiofauna interactions during the implementation of bioremediation treatment.
Plan de classement
Ecologie, systèmes aquatiques [036] ; Pollution [038]
Description Géographique
TUNISIE ; BIZERTE ; MEDITERRANEE
Localisation
Fonds IRD [F B010065434]
Identifiant IRD
fdi:010065434
Contact