Consulta: creatorFacets:"Hoffmann,Diego"
Registros recuperados: 5
Data/hora: 11/06/2024 06:48:16

Comportamento de forrageamento e dieta de Polystictus superciliaris (Aves, Tyrannidae) no sudeste do Brasil
Provedor de dados: 76
Autores: Hoffmann,Diego; Vasconcelos,Marcelo F.; Lopes,Leonardo E.; Rodrigues,Marcos.
O presente artigo descreve o comportamento de forrageamento e a dieta de Polystictus superciliaris (Wied, 1831), espécie pouco conhecida e de distribuição geográfica restrita às montanhas do leste do Brasil. Este trabalho foi realizado entre abril e dezembro de 2005 no Parque Estadual da Serra do Rola Moça, município de Nova Lima, Minas Gerais (20°03'S, 44°00'W). Para cada observação de forrageamento foram registrados os comportamentos de ataque, a direção e o substrato do ataque, a altura do substrato de forrageamento e a fitofisionomia onde o ataque ocorreu. Para a determinação da dieta da espécie foram feitas observações diretas de campo, sendo também analisado o conteúdo estomacal de 16 indivíduos. Polystictus superciliaris usa preferencialmente a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cadeia do Espinhaço; Comportamento de forrageamento; Conteúdo estomacal; Dieta; Canga.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000300014

Breeding biology and reproductive success of Polystictus superciliaris (Aves: Tyrannidae), an uncommon tyrant-flycatcher endemic to the highlands of eastern Brazil
Provedor de dados: 103
Autores: Hoffmann,Diego; Rodrigues,Marcos.
Polystictus superciliaris (Wied, 1831) is a small tyrant-flycatcher endemic to mountaintops in the highlands of eastern Brazil. In this paper we present the first description of the breeding biology of P. superciliaris and estimate its reproductive success from a population inhabiting rocky outcrops. This study was conducted during 2005 in the Parque Estadual da Serra do Rola Moça, municipality of Nova Lima (20°03'S, 44°00'W), state of Minas Gerais, southeastern Brazil. Fourteen pairs of P. superciliaris were banded and monitored. The onset of the breeding season in 2005 was assumed to have been sometime before the 26th of July, while it was assumed to have ended on the 23rd of November based on the last observation of a successful brood. Clutch size was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canga; Clutch size; Laying date; Mayfield method; Nest predation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300004

Bird-termite interactions in Brazil: A review with perspectives for future studies
Provedor de dados: 49
Autores: de Vasconcelos,Marcelo Ferreira; Hoffmann,Diego; de Araújo,Mércia Caroline; Vasconcelos,Prinscila Neves.
We present a review on the principal interactions between birds and termites in Brazil. We found 218 bird species feeding on termites or using termitaria for nesting or perching. Termites were mentioned as food source for 179 bird species. Alates were the most consumed caste. Termitaria were mentioned as nest site for 45 bird species. Some bird species also perch on the top of termite mounds to search for their prey or to conduct territorial and/or courtship displays. Considering all interactions between both animal groups, little is known about the identification of termite genera or species. Therefore, we suggest more detailed studies to be conducted on the natural history and ecology of interactions between birds and termites in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Brazil; Feeding; Nesting; Termites.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100101

The birds of Fazenda Brejão: a conservation priority area of Cerrado in northwestern Minas Gerais, Brazil
Provedor de dados: 49
Autores: Faria,Luciene Carrara Paula; Carrara,Lucas Aguiar; Amaral,Frederico Queiroga do; Vasconcelos,Marcelo Ferreira de; Diniz,Mauro Guimarães; Encarnação,Christiane Duarte; Hoffmann,Diego; Gomes,Henrique Belfort; Lopes,Leonardo Esteves; Rodrigues,Marcos.
The Cerrado is now considered the most threatened biome of South America. Northwestern Minas Gerais state, in southeastern Brazil, still harbors large areas of extreme importance for biological conservation of the Cerrado. The current study provides the first thorough assessment of the avifauna of a large remnant of Cerrado vegetation in this region, the Fazenda Brejão. Data are based on a bird survey conducted from November 1998 to January 2007. This area is a private property of 20.000 ha preserved that lies in a region recognized for its palm groves, a pristine Cerrado (savannah-like vegetation) and gallery forests. Bird censuses were carried out through random transects censuses, mist-net captures and recording bird vocalizations. It was recorded 273...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian inventory; Biodiversity; Cerrado; São Francisco river.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300023

How climate change can affect the distribution range and conservation status of an endemic bird from the highlands of eastern Brazil: the case of the Gray-backed Tachuri, Polystictus superciliaris (Aves, Tyrannidae)
Provedor de dados: 49
Autores: Hoffmann,Diego; Vasconcelos,Marcelo Ferreira de; Martins,Rogério Parentoni.
The Gray-backed Tachuri (Polystictus superciliaris) is a Tyrannidae restricted to eastern Brazilian highlands. Its population and range are still thought to be declining mainly due to habitat loss, caused by land use. We evaluated the impacts on its range (increase or decrease, displacement in latitude and altitude), considering possible effects caused by inappropriate land use and climatic changes. For this purpose, we modeled its current range and estimated its overlap between the predicted area and future scenarios. We also analyzed the efficiency of the Brazilian reserves to the species’ protection. The range established by the Maxent model was 76.1% lower than that available in the literature and presented a decrease in the future. Range contraction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Evaluation reserve efficiency; Espinhaço range; Species distribution model.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200102