Understorey bird assemblages in various types of lowland tropical forest in Tambopata Reserve, SE Peru (with faunistic notes)
Acta Zoologica Cracoviana
1990
Journal Article
33
11
215-233
Reserva Nacional Tambopata Parque Nacional Bahuaja-Sonene animals birds beta-diversity abundance community structure understory habitat heterogeneity habitat use animal behavior morphology ecology small spatial scales Reproduction Madre de Dios Bibliography
Understory bird assemblages were studied at TRZ during the first half of the rainy season (Nov. 1985 - Feb. 1986). The evaluation was done in four types of forests: lower floodplain forest, upper floodplain forest, upland forest type 1 and upland forest type 2, which represent a vegetation gradient. The abundance of birds and relative wing length decreased, whereas species diversity and the degree of sedentariness increased along this gradient. The antfollowers were more common in upper forests, whereas hummingbirds and manakins were more abundant in floodplain forest. The birds were mist-netted, identified, color-banded and released. 127 species were captured, which in comparison to other places (Panamá, Costa Rica) represents an unusual species richness. The data suggest that there is a considerable overlap of more numerous species between three of the studied forest types. A list of birds is also presented, with notes concerning biometry and breeding.