SÍTIOS DE ALIMENTAÇÃO FREQÜENTADO PELO GUARÁ (EUDOCIMUS RUBER) NO ESTUÁRIO DE CANANÉIA-ILHA COMPRIDA, SÃO PAULO
| Main Author: | Barbieri, E. |
|---|---|
| Format: | Article eJournal |
| Bahasa: | por |
| Terbitan: |
, 2009
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3531665 |
Daftar Isi:
- Foraging habitats of the Scarlet Ibis (Eudocimus ruber) were studied in mangrove ecosystems in the south coast of Sao Paulo State, southeastern Brazil. A total of 48 censuses were made on a weekly basis from January to December 2007. Scarlet Ibis was observed using point counts in areas of Boguaçú (Ilha Comprida), Batatais, Pai Matos, Retiro, and Mandira river (Cananéia). The species occurs in the study area throughout the year. The number of individuals varied among sites, correlating with seasons and lunar tidal cycle. The largest numbers were found in the Austral summer, while they decreased from late May to September. The dynamics of the foraging habitat is controlled by water-level fluctuation patterns and the lunar tidal cycle. A negative - and significant - relationship was found between Scarlet Ibis counts and sea level fluctuations. This can be explained by the fact that the species feeds during low tide periods, while unavailability of feeding and resting places during high tide forces them away from the areas under observation. Hence, feeding sites vary with the lunar tidal cycle
- Foraging habitats of the Scarlet Ibis (Eudocimus ruber) in the Cananéia-Ilha Comprida estuary, São Paulo, Brazil.