Bacteria
; Biogeochemistry
; Contamination
; Hydrocarbons
; Biogeochemical functioning
; Diversity
; Geochemical characteristic
; Hydrocarbon contamination
; Hydrocarbon content
; Microbial community structures
; Microbial mats
; Operational taxonomic units
; Microorganisms
; hydrocarbon
; hydrocarbon
; RNA 16S
; sulfur
; water pollutant
; biogeochemistry
; cyanobacterium
; hydrocarbon
; microbial community
; microbial mat
; pollution effect
; seasonal variation
; Article
; autumn
; bacterium
; biogeochemistry
; community structure
; controlled study
; environmental exposure
; microbial community
; microbial mat
; nonhuman
; operational taxonomic unit
; sea pollution
; seasonal variation
; spring
; taxonomy
; cyanobacterium
; drug effects
; France
; genetics
; metabolism
; microbial consortium
; photosynthesis
; physiology
; season
; toxicity
; water pollutant
; Cyanobacteria
; Otus
; Bacteria
; Cyanobacteria
; France
; Hydrocarbons
; Microbial Consortia
; Photosynthesis
; RNA, Ribosomal, 16S
; Seasons
; Sulfur
; Water Pollutants, Chemical
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
Photosynthetic microbial mats are metabolically structured systems driven by solar light. They are ubiquitous and can grow in hydrocarbon-polluted sites. Our aim is to determine the impact of chronic hydrocarbon contamination on the structure, activity, and functioning of a microbial mat. We compared it to an uncontaminated mat harboring similar geochemical characteristics. The mats were sampled in spring and fall for 2�years. Seasonal variations were observed for the reference mat: sulfur cycle-related bacteria dominated spring samples, while Cyanobacteria dominated in autumn. The contaminated mat showed minor seasonal variation; a progressive increase of Cyanobacteria was noticed, indicating a perturbation of the classical seasonal behavior. Hydrocarbon content was the main factor explaining the differences in the microbial community structure; however, hydrocarbonoclastic bacteria were among rare or transient Operational Taxonomic Units (OTUs) in the contaminated mat. We suggest that in long-term contaminated systems, hydrocarbonoclastic bacteria cannot be considered a sentinel of contamination. � 2016 Elsevier Ltd
Equipe Environnement et Microbiologie, IPREM UMR CNRS 5254, Universit� de Pau et des Pays de l'Adour, IBEAS, BP 1155, Pau Cedex, France; Plateforme Bioinformatique Genotoul, UR875, Biom�trie et Intelligence Artificielle, INRA, Castanet-Tolosan, France; UMR 9190 MARBEC IRD-Ifremer-CNRS, Universit� de Montpellier, Place Eug�ne Bataillon, Case 093, Montpellier Cedex 5, France; MIO, Institut M�diterran�en d'Oc�anologie, UMR 7294, Marseille, France; EPOC, UMR 5805, Universit� de Bordeaux, Pessac, France; GeT-PlaGe, Genotoul, INRA Auzeville, Castanet-Tolosan, France; Universit� de Pau et des Pays de l'Adour, Laboratoire de Math�matiques et de leurs Applications de Pau, Campus Montaury, UMR CNRS 5142, FED 4155 MIRA, Anglet, France
Recommended Citation:
Aub� J.,Senin P.,Pringault O.,et al. The impact of long-term hydrocarbon exposure on the structure, activity, and biogeochemical functioning of microbial mats[J]. Marine Pollution Bulletin,2016-01-01,111(2018-01-02)