Dynamics of Hydrology and Anaerobic Hydrocarbon Degrader Communities in A Tar-Oil Contaminated Aquifer.
BTEX
anaerobic toluene degradation
benzylsuccinate synthase
microbial community dynamics
next-generation sequencing
Journal
Microorganisms
ISSN: 2076-2607
Titre abrégé: Microorganisms
Pays: Switzerland
ID NLM: 101625893
Informations de publication
Date de publication:
09 Feb 2019
09 Feb 2019
Historique:
received:
21
12
2018
revised:
30
01
2019
accepted:
06
02
2019
entrez:
13
2
2019
pubmed:
13
2
2019
medline:
13
2
2019
Statut:
epublish
Résumé
Aquifers are typically perceived as rather stable habitats, characterized by low biogeochemical and microbial community dynamics. Upon contamination, aquifers shift to a perturbed ecological status, in which specialized populations of contaminant degraders establish and mediate aquifer restoration. However, the ecological controls of such degrader populations, and possible feedbacks between hydraulic and microbial habitat components, remain poorly understood. Here, we provide evidence of such couplings, via 4 years of annual sampling of groundwater and sediments across a high-resolution depth-transect of a hydrocarbon plume. Specialized anaerobic degrader populations are known to be established at the reactive fringes of the plume. Here, we show that fluctuations of the groundwater table were paralleled by pronounced dynamics of biogeochemical processes, pollutant degradation, and plume microbiota. Importantly, a switching in maximal relative abundance between dominant degrader populations within the Desulfobulbaceae and
Identifiants
pubmed: 30744114
pii: microorganisms7020046
doi: 10.3390/microorganisms7020046
pmc: PMC6406676
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : European Research Council
ID : 616644
Pays : International
Organisme : Deutsche Forschungsgemeinschaft
ID : GR 2107/1-2
Organisme : Deutsche Forschungsgemeinschaft
ID : LU 1188/2-2
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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