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dc.contributor.authorVadillo-Perez, Iñaki 
dc.contributor.authorOjeda, Lucía
dc.contributor.authorEtiope, Giuseppe
dc.contributor.authorBenavente, José
dc.contributor.authorLiñán-Baena, Cristina 
dc.contributor.authorDel Rosal, Yolanda
dc.contributor.authorTapia, Silvana
dc.contributor.authorMoriñigo-Gutierrez, Miguel Angel 
dc.contributor.authorCarrasco-Cantos, Francisco 
dc.date.accessioned2018-04-23T11:57:52Z
dc.date.available2018-04-23T11:57:52Z
dc.date.issued2018
dc.identifier.urihttps://hdl.handle.net/10630/15590
dc.description.abstractSubterranean air in karst cavities has often low methane contents in comparison to atmosphere and so karst systems have been considered a sink of atmospheric methane. Methane-oxidizing bacteria have been hypothesized as responsible for CH4 depletion in many caves around the world, although ionization radiation was also proposed as possible mechanism for this process. We measured CO2 and CH4 concentration and their C isotopic composition (d13C-CO2 and d13C-CH4) over 2 years within the Nerja cave system (South Spain) and in 9 boreholes drilled into the vadose zone (Triassic carbonate aquifer) surrounding the cave. According to d13C-CO2 and d13C-CH4 vadose zone of this karst system is a source of biogenic methane, produced both by acetate fermentation and CO2 reduction. Biogenic and atmospheric methane flows (along fractures from the vadose zone, and through ventilation, respectively) into the cave, where it is oxidized by methanotrophic bacteria that we detected on soil samples into the cave.en_US
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.en_US
dc.language.isoengen_US
dc.publisherEGUen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectMetano - Cueva de Nerja (Málaga)en_US
dc.subject.otherIsótopos establesen_US
dc.titleVadose zone air as a biogenic source of methane in Nerja Cave system (South of Spain)en_US
dc.typeinfo:eu-repo/semantics/conferenceObjecten_US
dc.centroFacultad de Cienciasen_US
dc.relation.eventtitleEuropean Geosciences Union General Assembly 2018en_US
dc.relation.eventplaceVienaen_US
dc.relation.eventdate8-13 Abril 2018en_US
dc.rights.ccAttribution-NonCommercial-NoDerivatives 4.0 Internacional*


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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