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dc.creatorÁvalos Rodríguez, Gerardoes_ES
dc.creatorMulkey, Stephen S.es_ES
dc.descriptionartículo (arbitrado) -- Universidad de Costa Rica, 2004. Versión de corrección de pruebases_ES
dc.description.abstractWe explored the short-term adjustment in photochemical efficiency (Fv/Fm) in adult and young leaves of the understory neotropical shrub Psychotria limonensis Krause (Rubiaceae) in response to rapid changes in the light environment. Leaves were collected from 20 individual plants growing under sun and shade conditions on Gigante Peninsula, Barro Colorado Natural Monument (Republic of Panama), during the wet season of 1996. Leaves were distributed in four sequences of light treatments (AB leaves were expanded under sun and were transferred to shade, BA leaves experienced the opposite transfer, and the controls AA and BB leaves that were expanded and maintained under sun or shade conditions). Adult and young leaves did not differ in overall photochemical efficiency. Instead, differences were found among light environments, for which leaves transferred from shade to sun showed the lowest F v/Fm ratios. There was no relationship between photochemical efficiency and leaf temperature. In P. limonensis, understory plants are susceptible of photoinhibition independently of the leaf ontogenetic stage. The approach utilized in this experiment allowed the rapid exploration of this capacity, and could be applied to poorly studied understory species.es_ES
dc.description.sponsorshipUniversity of Missouri-St. Louis, International Center for Tropical Ecology. Smithsonian Tropical Research Institute The School for Field Studies Universidad de Costa Ricaes_ES
dc.publisherRevista de Biologia Tropical 52 (4): 839-844es_ES
dc.rightsCC0 1.0 Universales_ES
dc.subjectChlorophyll fluorescencees_ES
dc.subjectTropical forestes_ES
dc.titlePhotochemical efficiency of adult and young leaves in the neotropical understory shrub Psychotria limonensis (Rubiaceae) in response to changes in the light environmentes_ES
dc.typeArtículo científicoes_ES
dc.description.procedenceUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biologíaes_ES

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CC0 1.0 Universal
Except where otherwise noted, this item's license is described as CC0 1.0 Universal