Recovering species demographic history from multi-model inference: the case of a neotropical savanna tree species

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dc.creatorCollevatti, Rosane Garcia
dc.creatorRibeiro, Matheus de Souza Lima
dc.creatorTerribile, Levi Carina
dc.creatorGuedes, Ludymila B S
dc.creatorRosa, Fernanda F
dc.creatorTelles, Mariana Pires de Campos
dc.date.accessioned2015-10-05T00:30:20Z
dc.date.available2015-10-05T00:30:20Z
dc.date.issued2014-10-11
dc.description.abstractBackground: Glaciations were recurrent throughout the Quaternary and potentially shaped species genetic structure worldwide by affecting population dynamics. Here, we implemented a multi-model inference approach to recover the distribution dynamics and demographic history of a Neotropical savanna tree, Tabebuia aurea (Bignoniaceae). Exploring different algorithms and paleoclimatic simulations, we used ecological niche modelling to generate alternative hypotheses of potential demographic changes through the last glacial cycle and estimated genetic parameters using coalescent modelling. Results: Comparing predictions from demographic hypotheses with genetic parameters of modern populations, our findings revealed a likely scenario of population decline, with spatial displacement towards Northeast Brazil from the last glacial maximum to the mid-Holocene. Subsequently, populations expanded in response to the return of the climatically suitable conditions in Central-West Brazil. Nevertheless, a wide historical refugium across Central Brazil likely maintained large populations connected throughout time. The expected genetic signatures from such predicted distribution dynamics are also corroborated by spatial genetic structure observed in modern populations. Conclusion: By exploring uncertainties inherent in multiple working hypotheses, we have shown that multi-model inference is a fruitful and efficient approach to recover the nature, timing and geographical context of the Tabebuia aurea population dynamic in response to the Quaternary climate changes.pt_BR
dc.identifier.citationCOLLEVATTI, Rosane G.; RIBEIRO, Matheus S. Lima; TERRIBILE, Levi Carina; GUEDES, Ludymila B. S.; ROSA, Fernanda F.; TELLES, Mariana P. C. Recovering species demographic history from multi-model inference: the case of a Neotropical savanna tree species. BMC Evolutionary Biology, v. 14, p. 213-226, Oct. 2014.pt_BR
dc.identifier.doi10.1186/s12862-014-0213-0
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/11013
dc.language.isoengpt_BR
dc.publisher.countrybrasilpt_BR
dc.publisher.programPrograma de Pós-Graduação em Ecologia e Evoluçãopt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectCoalescent simulationpt_BR
dc.subjectEcological niche modellingpt_BR
dc.subjectGenetic connectivitypt_BR
dc.subjectHabitat trackingpt_BR
dc.subjectMultiple working hypothesespt_BR
dc.subjectQuaternary climate changespt_BR
dc.titleRecovering species demographic history from multi-model inference: the case of a neotropical savanna tree speciespt_BR
dc.typeArtigopt_BR

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