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

dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.contributor.advisorDuque Montoya, Álvaro Javier
dc.contributor.advisorLeón Peláez, Juan Diego
dc.contributor.authorCalderón Caro, Jennifer
dc.date.accessioned2020-09-09T20:51:45Z
dc.date.available2020-09-09T20:51:45Z
dc.date.issued2020-03-23
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/78432
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.
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 elevación
dc.format.extent40
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc630 - Agricultura y tecnologías relacionadas::634 - Huertos, frutas, silvicultura
dc.titleDrivers of soil carbon stocks along an elevational gradient in the tropical Andes
dc.title.alternativeDeterminantes del almacenamiento del carbono orgánico en el suelo a lo largo de un gradiente de elevación en los Andes tropicales
dc.typeOtro
dc.rights.spaAcceso abierto
dc.description.additionalResearch line: Biodiversity, use and conservation
dc.type.driverinfo:eu-repo/semantics/other
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.publisher.programMedellín - Ciencias Agrarias - Maestría en Bosques y Conservación Ambiental
dc.contributor.corporatenameUniversidad Nacional de Colombia - Sede Medellín
dc.description.degreelevelMaestría
dc.publisher.departmentDepartamento de Ciencias Forestales
dc.publisher.branchUniversidad Nacional de Colombia - Sede Medellín
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.proposalCarbono orgánico en el suelo
dc.subject.proposalSoil organic carbon
dc.subject.proposaltemperatura
dc.subject.proposaltemperature
dc.subject.proposalmycorrhizal fungi
dc.subject.proposalhongos micorrizicos
dc.subject.proposalsoil nitrogen
dc.subject.proposalnitrógeno en el suelo
dc.subject.proposalrelación nitrógeno: fósforo
dc.subject.proposalnitrogen: phosphorus
dc.type.coarhttp://purl.org/coar/resource_type/c_1843
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2


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