Por favor, use este identificador para citar o enlazar este ítem: http://dspace.azti.es/handle/24689/795
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.contributor.authorMartinez-Santos, Miren
dc.contributor.authorLanzen, Anders
dc.contributor.authorUnda-Calvo, Jessica and Martin, Iker
dc.contributor.authorGarbisu, Carlos
dc.contributor.authorRuiz-Romera, Estilita
dc.date.accessioned2019-06-18T11:49:09Z-
dc.date.available2019-06-18T11:49:09Z-
dc.date.issued2018
dc.identifierISI:000432475300102
dc.identifier.citationSCIENCE OF THE TOTAL ENVIRONMENT, 2018, 633, 1051-1061
dc.identifier.issn0048-9697
dc.identifier.urihttp://dspace.azti.es/handle/24689/795-
dc.description.abstractStudying the dynamics of nitrogen and sulphur cycling bacteria in river surface sediments is essential to better understand their contribution to global biogeochemical cycles. Evaporitic rocks settled at the headwater of the Deba River catchment (northern Spain) lead to high values of sulphate concentration in its waters. Besides, the discharge of effluents from untreated and treated residual (urban and industrial) wastewaters increases the concentration of metals, nutrients and organic compounds in its mid- and low-water courses. The aim of this study was to assess the impact of anthropogenic contamination from untreated and treated residual and industrial wastewaters on the structure and function of bacterial communities present in surface sediments of the Deba River catchment. The application of a quantitative functional approach (qPCR) based on denitrification genes (nir: nirS + nirK; and nosZ), together with a 16S rRNA gene metabarcoding structural analysis, revealed (i) the high relevance of the sulphur cycle at headwater surface sediments (as reflected by the abundance of members of the Syntrophobacterales order, and the Sulfuricurvum and Thiobacillus genera) and (ii) the predominance of sulphide-driven autotrophic denitrification over heterotrophic denitrification. Incomplete heterotrophic denitrification appeared to be predominant in surface sediments strongly impacted by treated and untreated effluents, as reflected by the lower values of the nosZ/nir ratio, thus favouring N2O emissions. Understanding nitrogen and sulphur cycling pathways has profound implications for the management of river ecosystems, since this knowledge can help us determine whether a specific river is acting or not as a source of greenhouse gases (i.e., N2O). (C) 2018 Elsevier B.V. All rights reserved.
dc.language.isoeng
dc.publisherELSEVIER SCIENCE BV
dc.subjectAutotrophic/heterotrophic denitrification
dc.subjectNitrogen and sulphur cycling
dc.subjectMetabarcoding
dc.subjectqPCR (nir and nosZ)
dc.subjectRiver surface sediments
dc.subjectSURFACE BOTTOM SEDIMENTS
dc.subjectMICROBIAL COMMUNITIES
dc.subjectOXIDE REDUCTASE
dc.subjectNITRATE REDUCTION
dc.subjectURBAN CATCHMENT
dc.subjectTREATMENT-PLANT
dc.subjectORGANIC-MATTER
dc.subjectN2O EMISSIONS
dc.subjectGEN. NOV.
dc.subjectDIVERSITY
dc.titleTreated and untreated wastewater effluents alter river sediment bacterial communities involved in nitrogen and sulphur cycling
dc.typeArticle
dc.identifier.journalSCIENCE OF THE TOTAL ENVIRONMENT
dc.format.page1051-1061
dc.format.volume633
dc.contributor.funderMinistry of Economy and Competitiveness [CTM2014-55270-R]
dc.contributor.funderBasque Government (Consolidated Group of Hydrogeology and Environment) [IT1029-16]
dc.contributor.funderUniversity of the Basque Country (UPV-EHU) [UFI11/26]
dc.identifier.e-issn1879-1026
dc.identifier.doi10.1016/j.scitotenv.2018.03.229
Aparece en las tipos de publicación: Artículos científicos



Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.