title: Mangrove microbial diversity and the impact of trophic contamination.
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.
authors.affiliation: INRA, UMR CARRTEL, 75 av de Corzent, F-742003 Thonon-les-Bains, France. agnes.bouchez@thonon.inra.fr
authors.forename: Agnès
authors.initials: A
authors.lastname: Bouchez
authors.forename: Noémie
authors.initials: N
authors.lastname: Pascault
authors.forename: Cècile
authors.initials: C
authors.lastname: Chardon
authors.forename: Marc
authors.initials: M
authors.lastname: Bouvy
authors.forename: Philippe
authors.initials: P
authors.lastname: Cecchi
authors.forename: Luc
authors.initials: L
authors.lastname: Lambs
authors.forename: Mélanie
authors.initials: M
authors.lastname: Herteman
authors.forename: François
authors.initials: F
authors.lastname: Fromard
authors.forename: Patrice
authors.initials: P
authors.lastname: Got
authors.forename: Christophe
authors.initials: C
authors.lastname: Leboulanger
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000254:growth & development; D001673:Biodegradation, Environmental; D044822:Biodiversity; D000460:Chlorophyta / Q000145:classification / Q000254:growth & development; D017377:Diatoms / Q000145:classification / Q000254:growth & development; D020387:Food Chain; D019015:Geologic Sediments / Q000382:microbiology; D019156:Indian Ocean; D059013:Microbial Consortia; D009584:Nitrogen / Q000032:analysis / Q000633:toxicity; D010758:Phosphorus / Q000032:analysis / Q000633:toxicity; D043982:Rhizophoraceae / Q000382:microbiology*; D012623:Seawater / Q000382:microbiology; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater / Q000737:chemistry / Q000706:statistics & numerical data; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity; D053833:Wetlands
chemical_list: D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater; D014874:Water Pollutants, Chemical