Volant A., Bruneel Odile, Desoeuvre A., Hery M., Casiot C., Bru N., Delpoux S., Fahy A., Javerliat F., Bouchez O., Duran R., Bertin P. N., Elbaz-Poulichet F., Lauga B. (2014). Diversity and spatiotemporal dynamics of bacterial communities : physicochemical and other drivers along an acid mine drainage. Fems Microbiology Ecology, 90 (1), p. 247-263. ISSN 0168-6496.
Titre du document
Diversity and spatiotemporal dynamics of bacterial communities : physicochemical and other drivers along an acid mine drainage
Année de publication
2014
Auteurs
Volant A., Bruneel Odile, Desoeuvre A., Hery M., Casiot C., Bru N., Delpoux S., Fahy A., Javerliat F., Bouchez O., Duran R., Bertin P. N., Elbaz-Poulichet F., Lauga B.
Source
Fems Microbiology Ecology, 2014,
90 (1), p. 247-263 ISSN 0168-6496
Deciphering the biotic and abiotic factors that control microbial community structure over time and along an environmental gradient is a pivotal question in microbial ecology. Carnoules mine (France), which is characterized by acid waters and very high concentrations of arsenic, iron, and sulfate, provides an excellent opportunity to study these factors along the pollution gradient of Reigous Creek. To this end, biodiversity and spatiotemporal distribution of bacterial communities were characterized using T-RFLP fingerprinting and high-throughput sequencing. Patterns of spatial and temporal variations in bacterial community composition linked to changes in the physicochemical conditions suggested that species-sorting processes were at work in the acid mine drainage. Arsenic, temperature, and sulfate appeared to be the most important factors that drove the composition of bacterial communities along this continuum. Time series investigation along the pollution gradient also highlighted habitat specialization for some major members of the community (Acidithiobacillus and Thiomonas), dispersal for Acidithiobacillus, and evidence of extinction/re-thriving processes for Gallionella. Finally, pyrosequencing revealed a broader phylogenetic range of taxa than previous clone library-based diversity. Overall, our findings suggest that in addition to environmental filtering processes, additional forces (dispersal, birth/death events) could operate in AMD community.
Plan de classement
Pollution [038]
;
Hydrologie [062]
;
Etudes, transformation, conservation du milieu naturel [082]
;
Biotechnologies [084]
Description Géographique
FRANCE
Localisation
Fonds IRD [F B010062654]
Identifiant IRD
fdi:010062654
