Composição da avifauna de duas praças da cidade de Cruz das Almas, Bahia

Abstract

The process of urbanization is associated with the growth of human population and, as a result of this action, the original vegetation of this environment is replaced by exotic and/or fast growing species, which couses significant alterations in the balance of the local ecosystem. Locals of study were the Senador Temístocles square (first square) and the Geraldo Suerdieck square (second square). This evaluation began on March and ended on October, year 2011, between 5am to 8am and 4pm to 6 pm, resulting in over 100 hours of observation effort. On the first square were registered 38 species of birds, 18 of them are native. On the second square were registered 44 species, 21 of them being considered native. On both squares, insectivorous birds and with low sensibility to anthropized environments were the most representatives. Both squares present high diversity and similarity indexes, and low dominance index. We can consider that the urban bird fauna of the city of Cruz das Almas is in a good state regarding the number of species, considering that the squares have low vegetal cover, and are highly anthropized.