| searching for bioindicators of forest fragmentation: passerine birds in the atlantic forest of southeastern brazil. | aiming to evaluate the potential of passerine birds as bioindicators of forest fragmentation, we studied the avifauna in the mountain region of the state of rio de janeiro by mist-netting between 2001 and 2005. we sampled six sites, including four small fragments (from 4 to 64 ha) in an agricultural area (teresópolis), one second-growth forest (440 ha - miguel pereira) and a continuous forest (10,600 ha, serra dos orgãos national park - sonp). indicator species analysis and a monte carlo test we ... | 2008 | 18660953 |
| continental-scale analysis reveals deep diversification within the polytypic red-crowned ant tanager (habia rubica, cardinalidae). | we explored the phylogeographic patterns of intraspecific diversity in the red-crowned ant tanager (habia rubica) throughout its continent-wide distribution, in order to understand its evolutionary history and the role of evolutionary drivers that are considered to promote avian diversification in the neotropics. we sampled 100 individuals of h. rubica from mexico to argentina covering the main areas of its disjunct distribution. we inferred phylogenetic relationships through bayesian and maximu ... | 2015 | 25929787 |
| what drives genetic and phenotypic divergence in the red-crowned ant tanager (habia rubica, aves: cardinalidae), a polytypic species? | the effects of geographic and environmental variables on patterns of genetic and phenotypic differentiation have been thoroughly studied. ecological speciation involves reproductive isolation due to divergent natural selection that can result in a positive correlation between genetic divergence and adaptive phenotypic divergence (isolation by adaptation, iba). if the phenotypic target of selection is unknown or not easily measured, environmental variation can be used as a proxy, expecting positi ... | 2019 | 31832165 |
| deep divergence of red-crowned ant tanager (habia rubica: cardinalidae), a multilocus phylogenetic analysis with emphasis in mesoamerica. | many neotropical species have a complex history of diversification as a result of the influence of geographical, ecological, climatic, and geological factors that determine the distribution of populations within a lineage. phylogeography identifies such populations, determines their geographic distributions, and quantifies the degree of genetic divergence. in this work we explored the genetic structure of habia rubica populations, a polytypic taxon with 17 subspecies described, in order to obtai ... | 2018 | 30225165 |