Web of Science: 19 cites, Scopus: 19 cites, Google Scholar: cites,
Microbial community changes induced by Managed Aquifer Recharge activities : Linking hydrogeological and biological processes
Barba, Carme (Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental)
Folch, Albert (Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental)
Gaju, Núria (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)
Sanchez-Vila, Xavier (Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental)
Carrasquilla, Marc (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)
Grau-Martínez, Alba (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada)
Martínez-Alonso, Maria (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)

Data: 2019
Resum: Managed Aquifer Recharge (MAR) is a technique used worldwide to increase the availability of water resources. We study how MAR modifies microbial ecosystems and its implications for enhancing biodegradation processes to eventually improve groundwater quality. We compare soil and groundwater samples taken from a MAR facility located in NE Spain during recharge (with the facility operating continuously for several months) and after 4 months of no recharge. The study demonstrates a strong correlation between soil and water microbial prints with respect to sampling location along the mapped infiltration path. In particular, managed recharge practices disrupt groundwater ecosystems by modifying diversity indices and the composition of microbial communities, indicating that infiltration favors the growth of certain populations. Analysis of the genetic profiles showed the presence of nine different bacterial phyla in the facility, revealing high biological diversity at the highest taxonomic range. In fact, the microbial population patterns under recharge conditions agree with the intermediate disturbance hypothesis (IDH). Moreover, DNA sequence analysis of excised denaturing gradient gel electrophoresis (DGGE) band patterns revealed the existence of indicator species linked to MAR, most notably Dehalogenimonas sp. Nitrospira sp. and Vogesella sp. Our real facility multidisciplinary study (hydrological, geochemical and microbial), involving soil and groundwater samples, indicates that MAR is a naturally based, passive and efficient technique with broad implications for the biodegradation of pollutants dissolved in water.
Ajuts: European Commission 619120
Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/FI-DGR
Ministerio de Economía y Competitividad PCIN-2015-239
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès
Document: Article ; recerca ; Versió publicada
Matèria: Biodegradation process ; Denaturing gradient gel electrophoreses (DGGE) ; DNA sequence analysis ; Intermediate disturbance hypothesis ; Managed aquifer recharges ; Microbial communities ; Microbial eco system ; Microbial populations
Publicat a: Hydrology and earth system sciences, Vol. 23, Issue 1 (January 2019) , p. 139-154, ISSN 1607-7938

DOI: 10.5194/hess-23-139-2019


16 p, 2.6 MB

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