Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/124256
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dc.contributor.authorVila-Costa, Mariaes_ES
dc.contributor.authorPulido, Cristinaes_ES
dc.contributor.authorChappuis, Eglantinees_ES
dc.contributor.authorCalviño, Adelinaes_ES
dc.contributor.authorCasamayor, Emilio O.es_ES
dc.contributor.authorGacia, Esperançaes_ES
dc.date.accessioned2015-11-02T10:22:37Z-
dc.date.available2015-11-02T10:22:37Z-
dc.date.issued2016-01-
dc.identifier.citationLimnology and Oceanography 61(1): 78-88 (2016)es_ES
dc.identifier.issn0024-3590-
dc.identifier.urihttp://hdl.handle.net/10261/124256-
dc.description11 páginas, 3 tablas, 5 figurases_ES
dc.description.abstractRoot functional diversity of submerged vegetation exerts a major effect on nitrogen (N) cycling in lake sediments. This fact, however, is neglected in current N-balance models because the links between the engineering role of plants and in situ microbial N cycling are poorly understood. We hypothesized that macrophyte species with high root oxygen loss (ROL) capacity promote the highest denitrification because of a higher abundance of ammonia oxidizers and tighter coupling between nitrifiers and denitrifier communities. We sampled five small ultraoligotrophic shallow lakes with abundant macrophyte cover including sediments dominated either by Isoetes spp. (high ROL), mixed communities of natopotamids (low ROL), and unvegetated sandy sediments. At each site, we quantified denitrification (DNT) rates and proxies for the abundance of denitrifiers (nirS and nirK genes), and both ammonia oxidizing archaea (AOA) and ammonia oxidizing bacteria (AOB) and the diversity of nirS-harboring bacteria. Vegetated sediments showed significantly higher abundances of N-cycling genes than bare sediments. Plant communities dominated by Isoetes generated sediments with higher redox and NO2 3 concentrations and significantly higher DNT rates than natopotamidsdominated landscapes. Accordingly, increasing DNT rates were observed along the gradient from low ROL plants-bare sediments-high ROL plants. Significantly higher abundance of the archaeal amoA gene was recorded in sediments colonized by high ROL plants unveiling a key biogeochemical role for AOA in coupling macrophyte landscape and ecosystem denitrification.es_ES
dc.description.sponsorshipMVC was supported by a Juan de la Cierva fellowship from the Spanish Office for Research (MINECO) and a Beatriu de Pin os from the Catalan Government. This research was granted by projects DARKNESS CGL2012-32747 (MINECO) to EOC and AQUAREST (OAPN 212/2010) to EG. EC, EOC and EG are members of the Environmental Changes Ecology Group (GECA), an Excellence Research Group (SGRDGR), of the Generalitat de Catalunya (Ref. 2014 SGR 1249. 2014–2017).es_ES
dc.language.isoenges_ES
dc.publisherAmerican Society of Limnology and Oceanographyes_ES
dc.relation.isversionofPublisher’s version-
dc.rightsopenAccesses_ES
dc.titleMacrophyte landscape modulates lake ecosystem-level nitrogen losses through tightly coupled plant-microbe interactionses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1002/lno.10209-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1002/lno.10209es_ES
dc.rights.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.relation.csices_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.openairetypeartículo-
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