Mostra el registre d'ítem simple

dc.contributor.authorFreixa, Anna
dc.contributor.authorRubol, Simonetta
dc.contributor.authorCarles Brangari, Albert
dc.contributor.authorFernández García, Daniel
dc.contributor.authorButturini, Andrea
dc.contributor.authorSánchez Vila, Francisco Javier
dc.contributor.authorRomani Cornet, Anna Maria
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2016-05-04T17:26:24Z
dc.date.available2017-04-18T00:30:37Z
dc.date.issued2015-04-02
dc.identifier.citationFreixa, A., Rubol, S., Carles, A., Fernandez, D., Butturini, A., Sanchez, F., Romani, A. The effects of sediment depth and oxygen concentration on the use of organic matter: an experimental study using an infiltration sediment tank. "Science of the total environment", 02 Abril 2015, vol. 540, p. 20-31.
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/2117/86613
dc.description.abstractWater flowing through hyporheic river sediments or artificial recharge facilities promotes the development of microbial communities with sediment depth. We performed an 83-day mesocosm infiltration experment, to study howmicrobial functions (e.g., extracellular enzyme activities and carbon substrate utilization) are affected by sediment depth (up to 50 cm) and different oxygen concentrations. Results indicated that surface sediment layers were mainly colonized bymicroorganisms capable of using awide range of substrates (although they preferred to degrade carbon polymeric compounds, as indicated by the higher ß-glucosidase activity). In contrast, at a depth of 50 cm, the microbial community became specialized in using fewer carbon substrates, showing decreased functional richness and diversity. At this depth, microorganisms picked nitrogenous compounds, including amino acids and carboxyl acids. After the 83-day experiment, the sediment at the bottomof the tank became anoxic, inhibiting phosphatase activity. Coexistence of aerobic and anaerobic communities, promoted by greater physicochemical heterogeneity, was also observed in deeper sediments. The presence of specific metabolic fingerprints under oxic and anoxic conditions indicated that the microbial community was adapted to use organic matter under different oxygen conditions. Overall the heterogeneity of oxygen concentrations with depth and in time would influence organic matter metabolism in the sediment tank.
dc.format.extent12 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia
dc.subject.lcshSediments (Geology)
dc.subject.otherCarbon substrate use
dc.subject.otherExtracellular enzyme activities
dc.subject.otherBacteria
dc.subject.otherAnoxia
dc.titleThe effects of sediment depth and oxygen concentration on the use of organic matter: an experimental study using an infiltration sediment tank
dc.typeArticle
dc.subject.lemacSediments (Geologia)
dc.contributor.groupUniversitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània
dc.identifier.doi10.1016/j.scitotenv.2015.04.007
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S004896971500443X
dc.rights.accessOpen Access
drac.iddocument16677831
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/226070/EU/The research, training and mobility programme in Trentino/TRENTINO
upcommons.citation.authorFreixa, A., Rubol, S., Carles, A., Fernandez, D., Butturini, A., Sanchez, F., Romani, A.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameScience of the total environment
upcommons.citation.volume540
upcommons.citation.startingPage20
upcommons.citation.endingPage31
 Find Full text

Fitxers d'aquest items

Thumbnail

Aquest ítem apareix a les col·leccions següents

Mostra el registre d'ítem simple

Llevat que s'hi indiqui el contrari, els continguts d'aquesta obra estan subjectes a la llicència de Creative Commons: Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya