Volume 90, Issue 1 pp. 247-263
Research Article

Diversity and spatiotemporal dynamics of bacterial communities: physicochemical and other drivers along an acid mine drainage

Aurélie Volant

Aurélie Volant

Laboratoire HydroSciences Montpellier, HSM, UMR 5569 (IRD, CNRS, Universités Montpellier 1 et 2), Université Montpellier 2, Montpellier, France

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Odile Bruneel

Corresponding Author

Odile Bruneel

Laboratoire HydroSciences Montpellier, HSM, UMR 5569 (IRD, CNRS, Universités Montpellier 1 et 2), Université Montpellier 2, Montpellier, France

Correspondence: Odile Bruneel, Laboratoire HydroSciences Montpellier, UMR5569, Université Montpellier 2, Place E. Bataillon, CC MSE, 34095 Montpellier, France. Tel.: (+33)4 67 14 36 59; fax: (+33)4 67 14 47 74; e-mail: [email protected]Search for more papers by this author
Angélique Desoeuvre

Angélique Desoeuvre

Laboratoire HydroSciences Montpellier, HSM, UMR 5569 (IRD, CNRS, Universités Montpellier 1 et 2), Université Montpellier 2, Montpellier, France

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Marina Héry

Marina Héry

Laboratoire HydroSciences Montpellier, HSM, UMR 5569 (IRD, CNRS, Universités Montpellier 1 et 2), Université Montpellier 2, Montpellier, France

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Corinne Casiot

Corinne Casiot

Laboratoire HydroSciences Montpellier, HSM, UMR 5569 (IRD, CNRS, Universités Montpellier 1 et 2), Université Montpellier 2, Montpellier, France

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Noëlle Bru

Noëlle Bru

Laboratoire de Mathématiques et de leurs Applications, UMR 5142 (CNRS), Université de Pau et des Pays de l'Adour, Pau, France

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Sophie Delpoux

Sophie Delpoux

Laboratoire HydroSciences Montpellier, HSM, UMR 5569 (IRD, CNRS, Universités Montpellier 1 et 2), Université Montpellier 2, Montpellier, France

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Anne Fahy

Anne Fahy

Équipe Environnement et Microbiologie, EEM, UMR 5254 (IPREM, CNRS), Université de Pau et des Pays de l'Adour, Pau, France

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Fabien Javerliat

Fabien Javerliat

Équipe Environnement et Microbiologie, EEM, UMR 5254 (IPREM, CNRS), Université de Pau et des Pays de l'Adour, Pau, France

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Olivier Bouchez

Olivier Bouchez

INRA Auzeville, Plateforme Génomique Chemin de Borde Rouge, Castanet-Tolosan, France

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Robert Duran

Robert Duran

Équipe Environnement et Microbiologie, EEM, UMR 5254 (IPREM, CNRS), Université de Pau et des Pays de l'Adour, Pau, France

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Philippe N. Bertin

Philippe N. Bertin

Département Microorganismes, Génomes, Environnement, Laboratoire de Génétique Moléculaire, Génomique, Microbiologie, GMGM, UMR 7156 (Université de Strasbourg, CNRS), Strasbourg, France

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Françoise Elbaz-Poulichet

Françoise Elbaz-Poulichet

Laboratoire HydroSciences Montpellier, HSM, UMR 5569 (IRD, CNRS, Universités Montpellier 1 et 2), Université Montpellier 2, Montpellier, France

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Béatrice Lauga

Béatrice Lauga

Équipe Environnement et Microbiologie, EEM, UMR 5254 (IPREM, CNRS), Université de Pau et des Pays de l'Adour, Pau, France

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First published: 28 July 2014
Citations: 1

Abstract

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. Carnoulès 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.

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