Atlantic Forest, Cerrado or Caatinga? The influence of each biome
Transcrição
Atlantic Forest, Cerrado or Caatinga? The influence of each biome
Atlantic Forest, Cerrado or Caatinga? The influence of each biome on avifaunal composition in Parque Estdual Veredas do Peruaçu Carlos Eduardo R. T. Benfica 1,2, Luiz Gabriel Mazzoni 3, Santos D'angelo Neto & Marcus Canuto 1 1 - SOS Falconiformes, Centro de Pesquisas para a Conservação das Aves de Rapina Neotropicais, Belo Horizonte, Minas Gerais, Brasil. 2 - Laboratorio de Ecologia de Aves, Dep. de Ecologia, Inst. de Biociências, Universidade de São Paulo (USP-SP), Brasil. 3 - Programa de Pós-graduação em Zoologia de Vertebrados, Pontifícia Univ. Católica de Minas Gerais, Brasil. Brazilian avifauna is considered one of the world's most diverse, with its richness estimated in 1.825 species, second higher in South America. Three Biomes can be found in southeastern Brazil: the Atlantic Forest, the Cerrado and the Caatinga, being the formers classified as biodiversity hotspots. This study took place in Parque Estadual Veredas do Peruaçu (PEVP), which comprises 30.702 ha of protected area in northern Minas Gerais. Despite the region's classification as Atlantic Forest, it is clearly characterized by a transitional zone between Cerrado and Caatinga, what provides a considerable bird richness and diversity to the area, harboring birds typical of both biomes. From May 2010 to May 2011 qualitative surveys using transects and playbacks were conducted in the area, resulting in a total of 217 species recorded. Within the registered taxa, 19 are country’s endemic. We recorded birds typical of Veredas and swampy forests (such as Berlepschia rikeri, Syndactyla dimidiata and Phacellodomus ruber), Cerrado (such as Herpsilochmus longirostris, Melanopareia torquata, Saltatriculla atricollis, Neothraupis fasciata and Cypsnagra hirundinacea) and from carrascos and Caatinga (such as Herpsilochmus selowi, Megaxenops parnaguae, Gyalophylax hellmayri, Myrmochilus strigilatus and Hylopezus ochroleucus). Other records that deserve attention are Urubitinga (Harpyhaliaetus) coronata (globally threatened vulnerable) and Laterallus exilis, inconspicuous species with only anecdotal information about its distribution. Therefore, despite classified as an Atlantic Forest geographic region, the study site presents an avifaunal assemblage clearly characterized by Cerrado and Caatinga's elements, what highly contributes to the great alfa diversity found. The data presented here is still incipient, but shows the importance of PEVP on preserving populations of endemic and threatened birds.