title: Role of environmental fluctuations and microbial diversity in degradation of hydrocarbons in contaminated sludge.
abstract: Little is known about microbial communities involved in hydrocarbon degradation, whether it be their structural and functional diversity or their response to environmental constraints such as oxygen fluctuation. Here, current knowledge of the impact of diversity and redox oscillations upon ecosystem processes is reviewed. In addition, we present the main conclusions of our studies in this field. Oxic/anoxic oscillations had a strong impact upon bacterial community structures, influencing their ability to degrade hydrocarbons and their capacity to reduce hydrocarbon toxicity. Furthermore, a decrease in functional diversity has a strong impact on pollutant degradation.
authors.affiliation: Equipe Environnement et Microbiologie, UMR IPREM 5254, Université de Pau et des Pays de l'Adour, IBEAS, BP1155, Pau cedex, France. cristiana.cravo-laureau@univ-pau.fr
authors.forename: Cristiana
authors.initials: C
authors.lastname: Cravo-Laureau
authors.forename: Guillermina
authors.initials: G
authors.lastname: Hernandez-Raquet
authors.forename: Isabelle
authors.initials: I
authors.lastname: Vitte
authors.forename: Ronan
authors.initials: R
authors.lastname: Jézéquel
authors.forename: Virginie
authors.initials: V
authors.lastname: Bellet
authors.forename: Jean-Jacques
authors.initials: JJ
authors.lastname: Godon
authors.forename: Pierre
authors.initials: P
authors.lastname: Caumette
authors.forename: Patrick
authors.initials: P
authors.lastname: Balaguer
authors.forename: Robert
authors.initials: R
authors.lastname: Duran
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D044822:Biodiversity; D017753:Ecosystem; D059013:Microbial Consortia / Q000502:physiology*; D011084:Polycyclic Aromatic Hydrocarbons / Q000378:metabolism*; D012722:Sewage / Q000382:microbiology*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012722:Sewage; D012989:Soil Pollutants