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dc.contributor.author Baranzelli, Matias Cristian
dc.contributor.author Johnson, Leigh
dc.contributor.author Cosacov Martinez, Andrea
dc.contributor.author Sersic, Alicia Noemi
dc.date.available 2017-03-02T20:03:55Z
dc.date.issued 2014-02
dc.identifier.citation Baranzelli, Matias Cristian; Johnson, Leigh ; Cosacov Martinez, Andrea; Sersic, Alicia Noemi; Historical and ecological divergence among populations of Monttea chilensis (Plantaginaceae), an endemic endangered shrub bordering the Atacama Desert, Chile; Springer; Evolutionary Ecology; 28; 4; 2-2014; 751-774
dc.identifier.issn 0269-7653
dc.identifier.uri http://hdl.handle.net/11336/13488
dc.description.abstract The coastal deserts of northern Chile show an important latitudinal gradient of aridity with more arid areas to the north of the Atacama Desert than to the south. Several plant species have disjunct distributions that correspond with the extremes of this latitudinal gradient. In this study, using genetic (chloroplast and nuclear DNA), morphological (vegetative and floral traits of various kinds) and climatic and topographic information, we explored ecological and historical events that have putatively shaped patterns of variation among Monttea chilensis populations ? a species that shows this disjunct distribution. Through phylogeographic and phylogenetic analyses, two divergent lineages were identified located at the latitudinal extremes. The lineage located north (NG) of the Atacama Desert showed more genetic diversity and better-resolved phylogeographic structure than the southern (SG) lineage. Considerable morphological variation across the geographical range corresponds with these genetic groups. We observed contrasting relationships between floral and vegetative traits: populations from the most arid region (NG) possessed larger flowers, but smaller vegetative values, and vice versa. Niche modelling and multivariate analyses, including environmental data, revealed different environmental requirements for each lineage. NG plants occur in regions with warmer and drier climatic conditions and at higher altitudes, while SG populations inhabit colder and more humid environments and lower altitudes. The evolutionary history of M. chilensis exhibits a phylogeographical footprint consistent with past fragmentation and allopatric differentiation, where the hyper-arid zone formed by the Atacama Desert clearly acted as an important gene flow barrier. This barrier has led to considerable differentiation in morphology and ecology, resulting in two ecotypes or geographical races, suggesting incipient speciation promoted by local adaptation and geographical isolation.
dc.format application/pdf
dc.language.iso eng
dc.publisher Springer
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject ARIDIZATION
dc.subject ECOLOGICAL NICHE MODELLING
dc.subject FLOWER SHAPE
dc.subject FLOWER COLOUR
dc.subject GEOGRAPHIC VARIATION
dc.subject PLANT PHYLOGEOGRAPHY
dc.subject VICARIANCE
dc.subject.classification Biología
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Historical and ecological divergence among populations of Monttea chilensis (Plantaginaceae), an endemic endangered shrub bordering the Atacama Desert, Chile
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-03-01T18:04:59Z
dc.identifier.eissn 1573-8477
dc.journal.volume 28
dc.journal.number 4
dc.journal.pagination 751-774
dc.journal.pais Alemania
dc.journal.ciudad Berlin
dc.description.fil Fil: Baranzelli, Matias Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina
dc.description.fil Fil: Johnson, Leigh . University Brigham Young; Estados Unidos
dc.description.fil Fil: Cosacov Martinez, Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina
dc.description.fil Fil: Sersic, Alicia Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina
dc.journal.title Evolutionary Ecology
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10682-014-9694-y
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10682-014-9694-y


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)