Bouchez, Agnès and Pascault, Noémie and Chardon, Cècile and Bouvy, Marc and Cecchi, Philippe and Lambs, Luc and Herteman, Mélanie and Fromard, François and Got, Patrice and Leboulanger, Christophe Mangrove microbial diversity and the impact of trophic contamination. (2013) Marine Pollution Bulletin, 66 (1-2). 39-46. ISSN 0025-326X
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(Document in English)
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Official URL: http://dx.doi.org/10.1016/j.marpolbul.2012.11.015
Abstract
Mangroves are threatened ecosystems that provide numerous ecosystem services, especially through their wide biodiversity, and their bioremediation capacity is a challenging question in tropical areas. In a mangrove in Mayotte, we studied the potential role of microbial biofilm communities in removing nutrient loads from pre-treated wastewater. Microbial community samples were collected from tree roots, sediments, water, and from a colonization device, and their structure and dynamics were compared in two areas: one exposed to sewage and the other not. The samples from the colonization devices accurately reflected the natural communities in terms of diversity. Communities in the zone exposed to sewage were characterized by more green algae and diatoms, higher bacteria densities, as well as different compositions. In the area exposed to sewage, the higher cell densities associated with specific diversity patterns highlighted adapted communities that may play a significant role in the fate of nutrients.
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