7 documents found, page 1 of 1

First record of the Hauxwell’s thrush, Turdus hauxwelli Lawrence, 1869 (Aves: T...

We report the first record of the Hauxwell’s Thrush, Turdus hauxwelli Lawrence, 1869 (Aves: Turdidae) in the state of Mato Grosso do Sul, Brazil. During an ornithological inventory conducted in Serra de Maracajú, municipality of Corguinho, we mist-netted and collected an individual of the species. The specimen was prepared as study skin and is held in the ornithological collection of the Museu Nacional, Univers...

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...

A dynamic continental moisture gradient drove Amazonian bird diversification

The Amazon is the primary source of Neotropical diversity and a nexus for discussions on processes that drive biotic diversification. Biogeographers have focused on the roles of rivers and Pleistocene climate change in explaining high rates of speciation. We combine phylogeographic and niche-based paleodistributional projections for 23 upland terra firme forest bird lineages from across the Amazon to derive a n...

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...

The birds of Reserva Extrativista Chico Mendes, South Acre, Brazil

Este estudo descreve a avifauna amostrada na Reserva Extrativista Chico Mendes, Acre, Brasil. Foram registradas por contagem por pontos, redes neblina e observações gerais 344 espécies de aves incluídas em 17 ordens e 57 famílias. As famílias mais representadas foram Tyrannidae, Thamnophilidae e Thraupidae com 53, 36 e 22 espécies, respectivamente. Registramos algumas espécies de distribuição restrita, pouco co...

Climate explains recent population divergence, introgression and persistence in...

The birds of Reserva Extrativista Chico Mendes, South Acre, Brazil.

Este estudo descreve a avifauna amostrada na Reserva Extrativista Chico Mendes, Acre, Brasil. Foram registradas por contagem por pontos, redes neblina e observações gerais 344 espécies de aves incluídas em 17 ordens e 57 famílias. As famílias mais representadas foram Tyrannidae, Thamnophilidae e Thraupidae com 53, 36 e 22 espécies, respectivamente. Registramos algumas espécies de distribuição restrita, pouco co...