Biology of birds captured in an Atlantic Forest fragment, at Igarassu, Pernambuco / Biologia de aves capturadas em um fragmento de Mata AtlÃntica, Igarassu â PE

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

A study was carried out, about biology of the avifauna of the RefÃgio EcolÃgico Charles Darwin, a 60 ha fragment of Atlantic Forest, in the town of Igarassu, Pernambuco. Planning obtain information about the species of that bioma, were carried out observations between August â 1996 and July â 1997 and monthly captures utilizing mist nets, between July â 2003 and June â 2004. Among observations, captures, recaptures and recovers, 151 species (31 families) were registered in the study area, and 456 birds (from 53 species and 25 families) were trapped in the nets. Ten species had been recovered (time of banding from six to eight years). The amount of captures it was bigger in hottest months. The majority of captured species (52,8%) had frequency of occurrence less than 25%. Manacus manacus (Linnaeus, 1766), Arremon taciturnus (Hermann, 1783), Neopelma pallescens (Lafresnaye, 1853) and Turdus leucomelas Vieillot 1818 was the most frequent. It had significant correlation between averages of corporal mass and length of the wing and tarsus and diameter of tarsus related with sex, and of molt with seasons. The main period with molt associated to the brood patches was from March to May (with a peak in May). The findings fortify the unpredictability of the effects of alterations in the structure of bird community in long stated period. It is remained affirmative that the population unbalance can come to increase the extinguishing possibilities, being necessary new alternatives for the protection of biodiversity, over all in forest fragments

ASSUNTO(S)

bird community avifauna ecology zoologia fragmentation fragmentaÃÃo ecologia

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