Resumo
The estuary is an important feeding and resting site for mixed flocks of coastal seabirds, limnological inhabitants and also edge inhabitants. Once in a month, three census were done on the bird fauna with two hours intervals within observations, during the period from January/96 to December/98. The results showed the presence of 45 species, where 45,7% were regularly observed, while 17,9 occurred seasonally and 36,4% were occasional in the census. The highest abundance occurred during the winter and spring months, and the lowest during the summer and autumn. The medium annual diversity index varied between 1,68 ± 0,36 and 1,82 ± 0,34. The highest similarity of fauna was observed between the years 1997 and 1998.
Avifauna; census; seasonal changes; Santa Catarina
Avifauna; census; seasonal changes; Santa Catarina
Avifauna associada ao estuário do Saco da Fazenda, Itajaí, Santa Catarina, Santa Catarina
Avifauna associated to the estuary of Saco da Fazenda, Itajaí, Santa Catarina, Brazil
Joaquim Olinto Branco
Centro de Ciências Tecnológica, da Terra e do Mar, Universidade do Vale do Itajaí. Caixa Postal 360, 88301-970 Itajaí, Santa Catarina, Brasil. E-mail: job@cttmar.univali.br
ABSTRACT
The estuary is an important feeding and resting site for mixed flocks of coastal seabirds, limnological inhabitants and also edge inhabitants. Once in a month, three census were done on the bird fauna with two hours intervals within observations, during the period from January/96 to December/98. The results showed the presence of 45 species, where 45,7% were regularly observed, while 17,9 occurred seasonally and 36,4% were occasional in the census. The highest abundance occurred during the winter and spring months, and the lowest during the summer and autumn. The medium annual diversity index varied between 1,68 ± 0,36 and 1,82 ± 0,34. The highest similarity of fauna was observed between the years 1997 and 1998.
Key words: Avifauna, census, seasonal changes. Santa Catarina
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AGRADECIMENTOS. Aos colegas do CTTMar, Professores: José Gustavo Natorf de Abreu, Maria Inês Santos e Carlos Augusto F. Schettini, pela utilização de dados não publicados e auxílio na determinação da área do Estuário do Saco da Fazenda. Ao Dr. José Fernando Pacheco e um dos revisores anônimos pelas sugestões e correções.
Recebido em 27.IX.1999; aceito em 14.IV.2000.
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Datas de Publicação
-
Publicação nesta coleção
12 Maio 2009 -
Data do Fascículo
Jun 2000
Histórico
-
Aceito
14 Abr 2000 -
Recebido
27 Set 1999
