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Euglossini bees (Apidae) are an exclusively Neotropical monophyletic group of five genera (Aglae, Eufriesea, Euglossa, Eulaema, and Exaerete) with 190 species, (Rebêlo, 2001; Ramírez, 2005). In Brazil, the second most diverse country in Euglossini species (Ramírez et al., 2002), 80 species are referred for the Amazon, 57 for the Atlantic forest, and 23 for(More)
Despite many studies on fragmentation of tropical forests, the extent to which plant and animal communities are altered in small, isolated forest fragments remains obscure if not controversial. We examined the hypothesis that fragmentation alters the relative abundance of tree species with different vegetative and reproductive traits. In a fragmented(More)
The microwave-assisted catalytic hydrogenation of the isoxazolidine-fused meso-tetrakis(pentafluorophenyl)chlorin afforded directly a mono-annulated chlorin with a singular 1-methyl-2,3-dihydro-1H-benzo[b]azepine ring that resulted from the cleavage of the isoxazolidine N-O bond followed by an intramolecular nucleophilic aromatic substitution of an o-F(More)
Planting of native trees for habitat restoration is a widespread practice, but the consequences for the retention and transmission of genetic diversity in planted and natural populations are unclear. Using Inga vera subsp. affinis as a model species, we genotyped five natural and five planted populations in the Atlantic forest of northeastern Brazil at(More)
Dioecy is a rare sexual system among angiosperms whose occurrence and frequency depend on the kind and geographical location of the ecosystem. We evaluate the frequency of dioecy in the Caatinga, a special semi-arid vegetation type in Brazil. We compare the floral traits and other ecological characteristics usually related to dioecy between the Caatinga and(More)
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