Comparative Structure and Organization of Canopy Bird Assemblages in Honduras and Brazil

The condor

David L. Anderson¹ 

关键词: birds;    Brazil;    community structure;    core canopy species;    forest canopy;    Honduras;    lowland neotropical rainforest;   

DOI  :  10.1525/cond.2011.100007

学科分类：动物科学

来源: Central Ornithology Publication Office

【 摘 要 】

Abstract. Birds of the forest canopy are an integral component of bird communities of neotropical forests but remain largely unstudied, inhibiting any broad characterization of their assemblages. We present the first description of a canopy-bird assemblage from Middle America and, on the basis of > 11000 detections in lowland rainforests in Honduras and Amazonian Brazil, compare two distant canopy-bird assemblages. The richness of canopy birds at the two sites was similar despite the much higher richness of forest birds in Brazil. Furthermore, abundance distributions differed significantly: in Honduras the assemblage was dominated by a small number of superabundant species and had fewer rare species, whereas in Brazil it had fewer abundant species and was thus more even. Omnivores and insectivores dominated the assemblages in terms of species richness, but omnivores were numerically more abundant. Species of forest edges and open habitats, sometimes considered an important component of forestcanopy avifau...

【 授权许可】

CC BY