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Interplay of seasonal sunlight, air and leaf temperature in two alpine páramo species, Colombian Andes

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dc.creatorSánchez Andrade, Adrianaspa
dc.creatorRey-Sánchez A.C.spa
dc.creatorPosada Hostettler, Juan Manuel Robertospa
dc.creatorSmith W.K.spa
dc.date.accessioned2020-05-26T00:06:17Z
dc.date.available2020-05-26T00:06:17Z
dc.date.created2018spa
dc.description.abstractIn models of photosynthetic gas exchange, leaf temperature (Tleaf) is often calculated using a combination of derivations of the energy balance equation and measurements of air temperature (Tair). Yet, there are frequently large differences between Tleaf and Tair under natural field conditions, and an energy balance is complicated in complex canopies, especially in tropical ecosystems. In the present study, we aimed to quantify the variation in Tleaf relative to Tair under naturally varying PPFD values in two representative species (Espeletia grandiflora and Chusquea tessellata) of a tropical alpine ecosystem (páramo, Colombian Andes) during both wet and dry seasons. The results of a Structural Equation Model showed that Tleaf was strongly correlated with changes in Tair during both seasons, but large differences (up to 14 °C) occurred between Tair and Tleaf, during the dry season when PPFD varied the most, especially in C. tessellata. Thus, using Tair to proximate Tleaf under variable conditions of incident sunlight could generate substantial errors in estimates of temperature-sensitive physiological processes. These results should be valuable for evaluating the accuracy of carbon and water exchange models within current and future scenarios of climate change in tropical páramos, as well as other ecosystems. © 2018 Elsevier B.V.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1016/j.agrformet.2018.01.033
dc.identifier.issn1681923
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/23874
dc.language.isoengspa
dc.publisherElsevier B.V.spa
dc.relation.citationEndPage47
dc.relation.citationStartPage38
dc.relation.citationTitleAgricultural and Forest Meteorology
dc.relation.citationVolumeVol. 253-254
dc.relation.ispartofAgricultural and Forest Meteorology, ISSN:1681923, Vol.253-254,(2018); pp. 38-47spa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85041816908&doi=10.1016%2fj.agrformet.2018.01.033&partnerID=40&md5=057fee35c9031ee5c99c5f23169f498aspa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.source.instnameinstname:Universidad del Rosariospa
dc.source.reponamereponame:Repositorio Institucional EdocURspa
dc.subject.keywordAir temperaturespa
dc.subject.keywordAlpine environmentspa
dc.subject.keywordBamboospa
dc.subject.keywordClimate changespa
dc.subject.keywordClimate modelingspa
dc.subject.keywordEnergy balancespa
dc.subject.keywordLeafspa
dc.subject.keywordNumerical modelspa
dc.subject.keywordSeasonalityspa
dc.subject.keywordShrubspa
dc.subject.keywordSolar radiationspa
dc.subject.keywordTropical regionspa
dc.subject.keywordTundraspa
dc.subject.keywordAndesspa
dc.subject.keywordColombiaspa
dc.subject.keywordChusquea tessellataspa
dc.subject.keywordEspeletiaspa
dc.subject.keywordAir temperaturespa
dc.subject.keywordClimate changespa
dc.subject.keywordClimate modelingspa
dc.subject.keywordSunlightspa
dc.subject.keywordTropical alpinespa
dc.titleInterplay of seasonal sunlight, air and leaf temperature in two alpine páramo species, Colombian Andesspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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