Drivers of soil carbon stocks along an elevational gradient in the tropical Andes

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dc.contributor.advisorDuque Montoya, Álvaro Javierspa
dc.contributor.advisorLeón Peláez, Juan Diegospa
dc.contributor.authorCalderón Caro, Jenniferspa
dc.contributor.corporatenameUniversidad Nacional de Colombia - Sede Medellínspa
dc.date.accessioned2020-09-09T20:51:45Zspa
dc.date.available2020-09-09T20:51:45Zspa
dc.date.issued2020-03-23spa
dc.description.abstractGlobally, soils represent the most important terrestrial carbon (C) stock of the planet and improving our understanding of how soil organic carbon (SOC) changes along elevational gradients can help us to inform the likely response of tropical SOC to climate change. In this study, we used field data and linear mixed effect models to assess the effects of temperature, soil fertility, root symbiont association, and aboveground biomass productivity on SOC alongside an elevational gradient in the northwestern region of Colombia. Samples were taken from nine permanent forest plots located in Antioquia, ranging from 167 to 2928 m asl. We found that SOC increased significantly with elevation, with highland forests (>2000 m asl) having approximately a twice of SOC stocks than their lowland counterparts. The best model explaining SOC stock retained mean annual temperature, soil nitrogen stock, soil N:P, and proportion of basal area of ectomycorrhizal tree in each plot. Our results demonstrate that current SOC stocks in tropical Andes forests are more strongly influenced by belowground and climatic effects rather than plant productivity, that did not change along elevation.spa
dc.description.abstractLos bosques tropicales representan globalmente un importante sumidero de carbono (C). Por lo tanto, mejorar nuestro entendimiento sobre la variación del carbono orgánico en el suelo (COS) a través de un gradiente de elevación puede ayudarnos a esclarecer la posible respuesta del COS tropical al cambio climático. En este estudio, nosotros evaluamos el efecto de la temperatura, la fertilidad del suelo, los microorganismos asociados a las raíces, y la productividad de la biomasa aérea sobre el COS a lo largo de un gradiente de elevación, entre 167 y 2928 msnm, en el noroccidente de Colombia. Nosotros encontramos que el COS incrementa significativamente con la elevación. Adicionalmente, hallamos que el mejor modelo que explica el stock de COS esta dado por la temperatura, el stock de N y la relación N:P en el suelo y la proporción del área basal de los árboles con ectomicorrizas. En general, nuestros resultados demuestran que el stock actual de COS en los bosques tropicales de los Andes está más fuertemente influenciado por los efectos del clima y del suelo que por la entrada de C, ya que la productividad de las plantas no cambió con la elevaciónspa
dc.description.additionalResearch line: Biodiversity, use and conservationspa
dc.description.degreelevelMaestríaspa
dc.format.extent40spa
dc.format.mimetypeapplication/pdfspa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/78432
dc.language.isoengspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Medellínspa
dc.publisher.departmentDepartamento de Ciencias Forestalesspa
dc.publisher.programMedellín - Ciencias Agrarias - Maestría en Bosques y Conservación Ambientalspa
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dc.rightsDerechos reservados - Universidad Nacional de Colombiaspa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacionalspa
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacionalspa
dc.rights.spaAcceso abiertospa
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/spa
dc.subject.ddc630 - Agricultura y tecnologías relacionadas::634 - Huertos, frutas, silviculturaspa
dc.subject.proposalCarbono orgánico en el suelospa
dc.subject.proposalSoil organic carboneng
dc.subject.proposaltemperaturaspa
dc.subject.proposaltemperatureeng
dc.subject.proposalmycorrhizal fungieng
dc.subject.proposalhongos micorrizicosspa
dc.subject.proposalsoil nitrogeneng
dc.subject.proposalnitrógeno en el suelospa
dc.subject.proposalrelación nitrógeno: fósforospa
dc.subject.proposalnitrogen: phosphoruseng
dc.titleDrivers of soil carbon stocks along an elevational gradient in the tropical Andesspa
dc.title.alternativeDeterminantes del almacenamiento del carbono orgánico en el suelo a lo largo de un gradiente de elevación en los Andes tropicalesspa
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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