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Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches

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dc.coverageCRCen
dc.creatorBenavides, Felipe
dc.creatorBurbano, Jorge
dc.creatorBurbano, Diana
dc.creatorPrieto, Rodrigo
dc.creatorTorres, Carlos
dc.date2009-04-16
dc.date.accessioned2016-05-03T15:34:41Z
dc.date.available2016-05-03T15:34:41Z
dc.descriptionThe phenotypic structure within and between plant populations is generally influenced by their distribution patterns in space and time; therefore, the study of their divergence is a central issue for the understanding of their microevolutive processes. We boarded the hypothesis that three populations of Espeletia pycnophylla show phenotypic divergence as one of the possible implications of their geographic isolation in the Southern Colombian Andes. We used the Elliptic Fourier Descriptors (leaf shape) and traditional leaf morphometry (leaf size) of 347 leaves to measure inter and intra-population variation and a comparison between a paleogeographic reconstruction with an actual estimate of the distribution areas of E. pycnophylla in order to identify their main changes during the last 14 000 years. The three populations showed significant differences in leaf morphometry and a positive correlation between the matrices of morphometric and geographic dissimilarities, indicating that the inter-population divergence increases between further populations, so that the morphometric structure reflects their spatial distribution. The geographical and paleogeographical estimates evidenced a conspicuous process of reduction and fragmentation of the distribution area of E. pycnophylla since the Late-Glacial until the Holocene. We suggest that these results support possible scenarios of vicariance events, which allow us to approach the divergence of these populations in terms of their historic biogeographic relations. However, genetic analyses are still needed to support these results.en-US
dc.formatapplication/pdf
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/5410
dc.identifier10.15517/rbt.v58i4.5410
dc.identifier.urihttps://hdl.handle.net/10669/27575
dc.languageeng
dc.publisherUniversidad de Costa Ricaen
dc.rightsCopyright (c) 2014 International Journal of Tropical Biology and Conservationen
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 58 (4) December 2010en
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 58 (4) December 2010es
dc.sourceRevista Biología Tropical; Vol. 58 (4) December 2010pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v58i4
dc.titleInferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approachesen
dc.titleInferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approacheses
dc.typeartículo original

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Revista de Biología Tropical