7 research outputs found

    A Feeding Record Of The Short-tailed Hawk Buteo Brachyurus In Its Southern Range

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    [No abstract available]132191192Bierregaard Jr., R.O., The biology and conservation status of Central and South American Falconiformes: A survey of current knowledge (1995) Bird Cons. Int, 5, pp. 325-340Blendinger, P.C., Caplionch, P., Alvarez, M.E., Abundance and distribution of raptors in the Sierra de San Javier Biological Park, northwestern Argentina (2004) Orn. Neotrop, 15, pp. 501-512Manosa, S., Mateos, E., Pedrocchi, V., Abundance of soaring raptors in the Brazilian Atlantic rainforest (2003) J. Raptor Res, 37, pp. 19-30Martuscelli, P., Hunting behaviour of the Mantled Hawk Leucopternis polionota and the White-necked Hawk L. lacernulata in southeastern Brazil (1996) Bull. B. O. C, 116, pp. 114-116Ogden, J. C. (1974) The Short-tailed Hawk in Florida. I. Migration, habitat, hunting techniques, and food habits. Auk 91:95-110Robinson, S.K., Habitat selection and foraging ecology of raptors in Amazonian Peru (1994) Biotropica, 26, pp. 443-458Thiollay, J.M., Family Accipitridae (Hawks and Eagles) (1994) Handbook of the birds of the world, 2, pp. 52-205. , J. del Hoyo, A. Elliot and J. Sargatal eds, Barcelona: Lynx EditionsWhittaker, A., Nesting records of the genus Daptrius (Falconidae) from the Brazilian Amazon, with the first documented nest of the Black Caracara (1996) Ararajuba, 4, pp. 107-10

    Fauna In Decline: Meek Shall Inherit

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    [No abstract available]62011129Estes, J.A., (2011) Science, 333, p. 301Wilson, E.O., (1987) Conserv. Biol., 1, p. 344IUCN, (2014) The IUCN Red List of Threatened Species, , www.iucnredlist.orgKeesing, F., Young, T.P., (2014) Bioscience, 64, p. 487Potts, S.G., (2010) Trends Ecol Evol., 25, p. 345Christianini, A.V., Oliveira, P.S., (2010) J. Ecol., 98, p. 573Leal, I.R., Wirth, R., Tabarelli, M., (2014), Biotropica 10.1111/btp.12126Christian, C.E., (2000) Nature, 413, p. 6

    Patterns of diversity and abundance of fungus-growing ants (Formicidae: Attini) in areas of the Brazilian Cerrado PadrÔes de diversidade e abundùncia de formigas cultivadoras de fungo (Formicidade: Attini) em åreas do Cerrado Brasileiro

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    Fungus-growing ants (tribe Attini) are characteristic elements of the New World fauna. However, there is little information on the patterns of diversity, abundance, and distribution of attine species in their native ecosystems, especially for the so-called "lower" genera of the tribe. A survey of attine ant nests (excluding Atta Fabricus, 1804 and Acromyrmex Mayr, 1865) was conducted in a variety of savanna and forest habitats of the Cerrado biome near UberlĂąndia, Brazil. In total, 314 nests from 21 species of nine genera were found. Trachymyrmex Forel, 1893 was the most diverse genus with 10 species. Eighteen species were found in the savannas, including Mycetagroicus cerradensis BrandĂŁo & MayhĂ©-Nunes, 2001, a species from a recently-described genus of Attini, whereas in the forests only 12 species were found. Forest and savannas support relatively distinct faunas, each with a number of unique species; the species present in the forest habitats did not represent a nested subset of the species found in the savannas. Furthermore, although many species were common to both types of vegetation, their abundances were quite different. The density of attine nests is relatively high at some sites, exceeding an estimated 4,000 nests per hectare. In this sense, attine ants can be regarded as prevalent invertebrate taxa in the Brazilian Cerrado.<br>As formigas cultivadoras de fungos (tribo Attini) sĂŁo exclusivas da fauna do Novo Mundo. Entretanto, existem poucas informaçÔes sobre os padrĂ”es de diversidade, abundĂąncia e distribuição das espĂ©cies de Attini em seus ecossistemas nativos, em especial para os gĂȘneros menos derivados desta tribo. Um levantamento de ninhos de Attini (excluindo Atta Fabricius, 1804 e Acromyrmex Mayr, 1865) foi realizado em diversos ambientes savĂąnicos e de floresta do bioma Cerrado prĂłximos Ă  UberlĂąndia, Brasil. Encontramos 314 ninhos de 21 espĂ©cies pertencentes a nove gĂȘneros da tribo. Trachymyrmex Forel, 1893 foi o gĂȘnero mais diverso, com 10 espĂ©cies. Encontramos 18 espĂ©cies na savana, incluindo Mycetagroicus cerradensis BrandĂŁo & MayhĂ©-Nunes, 2001, uma espĂ©cie de um gĂȘnero de Attini recentemente descrito, enquanto que nas ĂĄreas de floresta registramos somente 12 espĂ©cies. As savanas e florestas apresentaram faunas relativamente distintas, com espĂ©cies exclusivas de cada tipo de vegetação; as espĂ©cies presentes nas florestas nĂŁo representaram um subconjunto das espĂ©cies encontradas nas savanas. AlĂ©m disso, apesar de muitas espĂ©cies terem sido comuns a ambos os tipos de vegetação, suas abundĂąncias foram muito diferentes. A densidade estimada de ninhos de Attini foi relativamente alta em alguns locais, ultrapassando 4.000 ninhos por hectare. Neste sentido, as formigas da tribo Attini podem ser consideradas como invertebrados predominantes no Cerrado brasileiro
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