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Quaternary climate changes as speciation drivers in the Amazon floodplains

Speciation Associated with Shifts in Migratory Behavior in an Avian Radiation

Made available in DSpace on 2020-12-10T19:56:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-04-06; Proyecto Semilla de la Universidad de los Andes; National Geographic Society; National Science Foundation International Research Fellowship; Gatorade Fund of the University of Florida; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICETArgentina); Fundação de Amparo à Pesquisa do Estado ...

Quaternary climate changes as speciation drivers in the Amazon floodplains

The role of climate as a speciation driver in the Amazon has long been discussed. Phylogeographic studies have failed to recover synchronous demographic responses across taxa, although recent evidence supports the interaction between rivers and climate in promoting speciation. Most studies, however, are biased toward upland forest organisms, while other habitats are poorly explored and could hold valuable infor...

Phylogeny and biogeography of Yellow-headed and Blue-fronted Parrots (Amazona o...

Análise comparativa de padrões de diversificação em quatro gêneros de Psitacíde...

Phenotypic and genetic structure support gene flow generating gene tree discord...

Before populations become independent evolutionary lineages, the effects of micro evolutionary processes tend to generate complex scenarios of diversification that may affect phylogenetic reconstruction. Not accounting for gene flow in species tree estimates can directly impact topology, effective population sizes and branch lengths, and the resulting estimation errors are still poorly understood in wild popula...

Effects of Pleistocene climate changes on species ranges and evolutionary proce...

The effects of global glaciations on the distribution of organisms is an essential element of many diversification models. However, the empirical evidence supporting this idea is mixed, in particular with respect to explaining tropical forest evolution. In the present study, we evaluated the impacts of range shifts associated with Pleistocene global glacial cycles on the evolution of tropical forests. In partic...

A palaeobiogeographic model for biotic diversification within Amazonia over the...

Many hypotheses have been proposed to explain high species diversity in Amazonia, but few generalizations have emerged. In part, this has arisen from the scarcity of rigorous tests for mechanisms promoting speciation, and from major uncertainties about palaeogeographic events and their spatial and temporal associations with diversification. Here, we investigate the environmental history of Amazonia using a phyl...

Evolutionary relationships among the Aratinga solstitialis (PSITTACIDAE; AVES) ...

Phenotypic evolution of an Atlantic Forest passerine (Xiphorhynchus fuscus): Bi...

We studied the phenotypic variation of the Atlantic Forest passerine Xiphorhynchus fuscus (Aves: Dendrocolaptidae) with the broad aim of addressing whether the history and type of forest affected the evolution of endemic taxa. We also tested whether the different subspecies and genetic lineages of X.fuscus could be considered full species. We collected plumage and body size measurements and, in combination with...