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Theses

Dynamique des communautés bactériennes de
tapis microbiens soumis aux stress
environnementaux

Abstract : This thesis relates to the study of the bacterial communities dynamics of microbial mats in order to understand their adaptive mechanisms face to environmental stresses. The bacterial biodiversity was analyzed by T-RFLP, molecular approach of microbial ecology. This work concerned, firstly, the description of two photosynthetic microbial mats of distinct salinity, marine (Orkneys Islands), and hypersaline (Camargue Salterns). The spatio-temporal distribution of communities in Camargue mat during a nycthemeral cycle was then studied. Adaptive behaviors in phototrophic and sulfate-reducing bacteria could be revealed, of which migration. Thirdly, the analysis of the hydrocarbon impact on the Guérande and Camargue mats finally showed a real influence, with the successive development of communities having capacities of adaptation to hydrocarbons.
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https://tel.archives-ouvertes.fr/tel-00151969
Contributor : Aude Fourçans <>
Submitted on : Tuesday, June 5, 2007 - 5:25:23 PM
Last modification on : Friday, January 15, 2021 - 9:24:30 AM

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  • HAL Id : tel-00151969, version 1

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Aude Fourçans. Dynamique des communautés bactériennes de
tapis microbiens soumis aux stress
environnementaux. Ecologie, Environnement. Université de Pau et des Pays de l'Adour, 2004. Français. ⟨tel-00151969⟩

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