EFFECTS OF SEASONAL AIR TEMPERATURES AND LIGHT ON LEAF TRAITS AT ATLANTIC MONTANE FOREST, BRAZILIAN SOUTHEAST

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dc.contributor.authorMarchiori, Nidia Mara
dc.contributor.authorSilva, Janaina Gomes da
dc.contributor.authorSantos, Fernanda Cassemiro dos
dc.contributor.authorDomingues, Leonardo Moreno
dc.contributor.authorFreitas, Helber Custodio de [UNESP]
dc.contributor.authorRocha, Humberto Ribeiro da
dc.contributor.authorCamargo, Plinio Barbosa de
dc.contributor.authorMarinho Aidar, Marcos Pereira
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionInst Bot
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-10T17:03:24Z
dc.date.available2020-12-10T17:03:24Z
dc.date.issued2019-07-01
dc.description.abstractSeasonal variation of temperature could place physiological constraints on the distribution and performance of tropical forest plants, associated with light and water availability. A simple way to assess the relationship between temperature and plant physiology is through the characterization of leaf traits. The main aim of this study was to evaluate, through foliar parameters, the responses of plants to inherent seasonality. A 0.09 ha plot was installed near the flux tower and albedo sensors at Montane Ombrophilous Dense Forest (MODF) - Santa Virginia Nucleus. At the peak of the dry and wet seasons, the electron transport rate (ETR) and photosynthetic pigments were measured. The results indicated that in MODF, cold and light availability are the main factors that could be influencing the physiology of species, demonstrated by high ETR in the wet season (197.4 mu mol e-m(-2)s(-1)) compared to the dry season (87.4 mu mol e-m(-2)s(-1)). Photosynthetic pigments varied between seasons, we observed higher chlorophyll b content (p<0.05), and lower content of carotenoids and xanthophylls (p<0.01) and Chl a/b (p<0.01) in the dry season. The low temperatures and irradiance influenced metabolic activity.en
dc.description.affiliationUniv Estadual Campinas, Campinas, SP, Brazil
dc.description.affiliationInst Bot, Sao Paulo, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Sao Paulo, SP, Brazil
dc.description.affiliationSao Paulo State Univ, Bauru, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Piracicaba, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Bauru, SP, Brazil
dc.format.extent263-272
dc.identifierhttp://dx.doi.org/10.1590/01047760201925032625
dc.identifier.citationCerne. Lavras: Univ Federal Lavras-ufla, v. 25, n. 3, p. 263-272, 2019.
dc.identifier.doi10.1590/01047760201925032625
dc.identifier.issn0104-7760
dc.identifier.urihttp://hdl.handle.net/11449/195062
dc.identifier.wosWOS:000503860800001
dc.language.isoeng
dc.publisherUniv Federal Lavras-ufla
dc.relation.ispartofCerne
dc.sourceWeb of Science
dc.subjectAlbedo
dc.subjectChlorophyll
dc.subjectCarotenoids
dc.subjectXantophylls
dc.titleEFFECTS OF SEASONAL AIR TEMPERATURES AND LIGHT ON LEAF TRAITS AT ATLANTIC MONTANE FOREST, BRAZILIAN SOUTHEASTen
dc.typeArtigo
dcterms.rightsHolderUniv Federal Lavras-ufla

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