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dc.contributor.authorBarros, Michel João Ferreirapt_BR
dc.contributor.authorDiniz Filho, Jose Alexandre Felizolapt_BR
dc.contributor.authorFreitas, Loreta Brandão dept_BR
dc.date.accessioned2018-10-24T02:44:04Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn1415-4757pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/183957pt_BR
dc.description.abstractThe Tropical Niche Conservatism hypothesis is one of the most relevant theories to explain why tropical diversity is high, although the mechanisms underlying this hypothesis require further clarification. A possible research avenue to address the underlying mechanisms includes determining population-level processes associated with such a hypothesis, in particular by trying to identify how adaptation may occur in extreme niche conditions at the edges of species ranges. However, the determinants of molecular diversity at the edges of geographical distributions of tropical taxa are still poorly known. Here we assessed which environmental variables determine diversity in nuclear and plastid genetic markers for populations of four Passiflora species in the southern limit of their geographical distributions. Climatic factors can drive genetic diversity, and their importance varies according to the marker. The primary predictors are variables representing higher temperatures during cold periods of the year and higher precipitation during dry periods. We concluded that, although these species are present in colder areas at the edge of their range, Tropical Niche Conservatism acts as a restraining force on genetic diversity in southern populations of Passiflora.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofGenetics and molecular biology. Ribeirão Preto, SP. Vol. 41, no. 1 suppl (mar. 2018), p. 318-326.pt_BR
dc.rightsOpen Accessen
dc.subjectDistribution edgesen
dc.subjectPassiflorapt_BR
dc.subjectDiversidade genéticapt_BR
dc.subjectGenetic diversityen
dc.subjectPassifloraen
dc.subjectNiche conservatismen
dc.subjectEnvironmental driversen
dc.titleEcological drivers of plant genetic diversity at the southern edge of geographical distributions: forestal vines in a temperate regionpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001073509pt_BR
dc.type.originNacionalpt_BR


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