+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Composicao de bandos mistos de aves em fragmentos de mata Atlantica no sudeste do Brasil



Composicao de bandos mistos de aves em fragmentos de mata Atlantica no sudeste do Brasil



Papeis Avulsos de Zoologia Sao Paulo 43(3): 31-54



Habitat fragmentation has been one of the most important subjects for conservation biology during the last years. However, few studies have evaluated the effects of forest fragmentation on mixed-species bird flocks. These flocks are associations of two or more species, which cohesion is related to networks of interactions between flock members. Decreased predation and increased foraging efficiency are two main selective advantages thought to explain the evolution of mixed-species flocking behavior. The aim of this work was to analyse mixed-species flock composition in relation to the size of Atlantic Forest fragments during rainy and dry seasons, at Zona da Mata region, Southeastern of Minas Gerais State, Brazil. Three distinct kinds of mixed-species flocks were identified at the study area: heterogeneous flocks, understory flocks and canopy flocks. The first one was observed in all forest fragments, although understory flocks were observed in only three. Canopy flocks were rare in all fragments. Some species were presented in two different kinds of flocks. The Black-goggled Tanager (Trichothraupis melanops) and the Golden-crowned Warbler (Basileuterus culicivorus) were nuclear species of heterogeneous flocks. The Red-crowned Ant-tanager (Habia rubica) was the most important species in understory flock formation and cohesion. In canopy flocks none of the species had similar characteristics. Here we analyzed the effect of season and forest fragment area on the composition of understory and heterogeneous mixed-flock based on two approaches: 1) [long dash] frequency of species and 2) [long dash] ecological traits of flocking species. In relation to species' frequencies, seasonality affected heterogeneous flocks composition more strongly than fragment area. Only two forest fragments differed slightly in heterogeneous flocks' composition. Both area and seasonality influenced understory flock composition. Excluding the category of canopy species of heterogeneous flocks, which decreased with fragment area in the rainy season, the overall proportion of species in the categories forest-dependence, foraging strata and foraging characteristics did not change in relation to forest fragment area or season, neither for heterogeneous nor for understory flocks.

(PDF emailed within 1 workday: $29.90)

Accession: 020761078

Download citation: RISBibTeXText


Related references

Composition of mixed flocks of birds in Atlantic forest fragments of south east Brazil Composicao de bandos mistos de aves em fragmentos de mata Atlantica no sudeste do Brasil. Papeis Avulsos de Zoologia (Sao Paulo): 433: 31-54, 2003

Mixed flocks of birds in Atlantic rain forest in Serra de Paranapiacaba, southeastern Brazil A composicao dos bandos mistos de Aves na mata Atlantica da Serra de Paranapiacaba, no sudeste Brasileiro. Revista Brasileira de Biologia. Fevereiro; 591: 75-85, 1999

Vireo olivaceus (Vireonidae): uma especie migratoria nos bandos mistos de aves na Mata Atlantica do sudeste brasileiro. 1997

Composicao de bandos mistos de aves florestais de sub-bosque em areas de encosta e planicie da Floresta Atlantica de Santa Catarina, sul do Brasil. Biotemasjunho; ): 47-53, 2006

Nuclear species of mixed bird flocks in Atlantic forest in the Serra de Paranapiacaba, southeastern Brazil As especies-nucleo dos bandos mistos de aves da mata atlantica da Serra de Paranapiacaba, no sudeste brasileiro. Sitientibus Serie Ciencias Biologicas. Junho; 21-2: 85-90, 2002

Vireo olivaceus Vireonidae a migrant species in mixed flocks of birds in the Atlantic rain forest in southeastern Brazil Vireo olivaceus Vireonidae uma especie migratoria nos bandos mistos de aves na Mata Atlantica do sudeste brasileiro. Ararajuba. junho; 51: 60-62, 1997

Composition of mixed flocks of understory forest birds in a reas of the Atlantic coast and lowlands of Santa Catarina State, southern Brazil Composicao de bandos mistos de aves florestais de sub-bosque em areas de encosta e planicie da Floresta Atlantica de Santa Catarina, sul do Brasil. Biotemas. junho; 192: 47-53, 2006

Reintroducao do sagui-da-cara-branca (Callithrix geoffroyi) em fragmentos di Mata Atlantica no sudeste do Brasil. 1997

Composicao floristica de dois remanescentes de Mata Atlantica do sudeste de Minas Gerais, Brasil. Revista Brasileira de Botanica 23(3): 255-282, 2000

Comunidade de abelhas Euglossina em pequenos fragmentos de Mata Atlantica no estado do Rio de Janeiro, sudeste do Brasil Hymenoptera, Apidae. 2012

Composicao e diversidade de anfibios anuros em dois ambientes de Mata Atlantica no Parque Estadual Carlos Botelho, Sao Paulo, sudeste do Brasil. Biota Neotropica 7(2): 1-10, 2007

Associacao entre aves e flores de duas especies de arvores do genero Erythrina Fabaceae na Mata Atlantica do sudeste do Brasil. Iheringia Serie Zoologia 98(1): 123-128, 2008

Reintroduction of the white-faced marmoset Callithrix geoffroyi in fragments of Atlantic forest in southeast Brazil Reintroducao do sagui-da-cara-branca Callithrix geoffroyi em fragmentos di Mata Atlantica no sudeste do Brasil. Unknown, 1997

Diversidade de morcegos em area de Mata Atlantica regenerada no sudeste do Brasil. Revista Brasileira de ZoocienciasDezembro; 5(2): 189-204, 2003

Aves de fragmentos florestais em area de cultivo de cana-de-acucar no sudeste do Brasil. Iheringia Serie Zoologia30 junho; 95(2): 217-222, 2005