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Trait-based scaling of temperature-dependent foliar respiration in a species-rich tropical forest canopy

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dc.creatorSlot, Martijnspa
dc.creatorRey?Sánchez, Camilospa
dc.creatorWinter, Klausspa
dc.creatorKitajima, Kaoruspa
dc.date.accessioned2020-05-26T00:08:40Z
dc.date.available2020-05-26T00:08:40Z
dc.date.created2014spa
dc.description.abstractThe scarcity of empirical data on leaf respiration (R) and its temperature sensitivity (e.g. Q10, defined as the proportional increase in R per 10 °C warming) causes uncertainty in current estimates of net primary productivity of tropical forests. We measured temperature response curves of R on 123 upper-canopy leaves of 28 species of trees and lianas from a tropical forest in Panama and analysed variations in R and Q10 in relation to other leaf functional traits. Respiration rates per leaf area at 25 °C (RA) varied widely among species and were significantly higher in trees than in lianas. RA was best predicted by a multiple regression model containing leaf phosphorus concentration, photosynthetic capacity and leaf mass per area (r2 = 0·64). The mean Q10 value (2·4) was significantly higher than the commonly assumed value of 2·0. Q10 was best predicted by the combination of leaf carbohydrate concentration and growth form (trees vs lianas) (r2 = 0·26). The night-time leaf respiratory carbon flux from this tropical forest was calculated from these multiple regression models to be 4·5 Mg C ha-1 year-1, with an estimated additional 2·9 Mg C ha-1 year-1 being released by respiration during the day. Trait-based modelling has potential for estimating R, thus facilitating carbon flux estimation in species-rich tropical forests. However, in contrast to global analyses, leaf phosphorus content was the most important correlate of R and not leaf nitrogen, so calibration of trait models to the tropics will be important. Leaf traits are poor predictors of Q10 values, and more empirical data on the temperature sensitivity of respiration are critically needed to further improve our ability to scale temperature-dependent respiration in species-rich tropical forests. © 2014 British Ecological Society.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1111/1365-2435.12263
dc.identifier.issn02698463
dc.identifier.issn13652435
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/24103
dc.language.isoengspa
dc.publisherBlackwell Publishing Ltdspa
dc.relation.citationEndPage1086
dc.relation.citationIssueNo. 5
dc.relation.citationStartPage1074
dc.relation.citationTitleFunctional Ecology
dc.relation.citationVolumeVol. 28
dc.relation.ispartofFunctional Ecology, ISSN:02698463, 13652435, Vol.28, No.5 (2014); pp. 1074-1086spa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84908293085&doi=10.1111%2f1365-2435.12263&partnerID=40&md5=da433e9f1f8c883d0cae5bdbf3f3ababspa
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.keywordCarbon fluxspa
dc.subject.keywordClimate changespa
dc.subject.keywordGas exchangespa
dc.subject.keywordLeaf functional traitsspa
dc.subject.keywordNPPspa
dc.subject.keywordPanamaspa
dc.subject.keywordQ10spa
dc.subject.keywordTemperature response of respirationspa
dc.titleTrait-based scaling of temperature-dependent foliar respiration in a species-rich tropical forest canopyspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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