Produção Nacional
Variação sazonal de aves marinhas no baixio do Arrozal, município de Cananeia-SP
2011; Volume: 35; Issue: 1 Linguagem: Inglês
10.15343/0104-7809.20113517183
ISSN1980-3990
AutoresFábio Hideo Numao, Edison Barbieri,
Tópico(s)Fish biology, ecology, and behavior
ResumoThe aim of this work was to identity the abundance of coastal and estuary birds species that occupy Arrozal sandbank inCananeia (SP), and its seasonal/monthly variation during the years of 2005 and 2006. The censuses had been made during tide low,through direct counting, where the observer in a fixed point developed individual counting of species. It was found in the place a totalof 30 species congregated in 13 families and 6 orders, in a total of 37 samples during the period 2005-2006. Phalacrocorax brasilianus,Rynchops niger, Thalasseus acuflavidus e Thalasseus maximus were the most abundant birds. The four species together accountedfor 86.8% of birds observed during the period of study. The distribution of Phalacrocorax brasilianus and Rynchops niger individualsduring the seasons had not been equal. Thalasseus maximus did not present difference in the distribution of individuals throughout theseasons, but when we applied Tukey test it was possible to verify a significant difference between winter and spring. As for Thalasseusacuflavidus, the distribution of species throughout the seasons was equal throughout the year.
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