| 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 |
| population structuring of the endemic black-cheeked gnateater, conopophaga melanops melanops (vieillot, 1818) (aves, conopophagidae), in the brazilian atlantic forest. | randomly amplified polymorphic dna (rapd) markers were used to analyze genetic differentiation among three populations of the endemic black-cheeked gnateater (conopophaga melanops melanops) within a larger pristine reminiscent of the brazilian atlantic forest. analyses of molecular variance (amova) (phist=0.13149, p<0.0001) and the nonparametric test for homogeneity of the molecular variance (homova) (b=0.32337; p=0.0019) showed a statistically significant genetic divergence among the three blac ... | 2007 | 18278353 |
| isospora borbai n. sp. (chromista: apicomplexa: eimeriidae) from gnateaters conopophaga spp. (passeriformes: tyranni: conopophagidae) in south america. | the gnateaters conopophaga spp. are insectivorous passerines commonly observed in high and humid forests, where they remain lodged in thin branches and, sometimes, they fly to the ground to catch insects. the insectivorous feeding habit is related to low prevalence and density of coccidians in passerines; however, several coccidian species are recorded for families of insectivorous passerines. | 2019 | 31187387 |