Levantamento preliminar de aves na foz do rio Una, Mosaico da Juréia-Itatins, São Paulo, Brasil

Carlos Venicio Cantareli, Rogério Martins, Walter Barrella, Vitória Arantes

Abstract


The coastal region of the state of São Paulo has suffered serious impacts related to urban expansion, opening of roads, port development among others. This rapid development process is fragmenting ecosystems associated with coastal regions of the state. The urbanization of coastlines can cause serious damage to the balance of resident and migratory species that use these areas. The Juréia-Itatins Mosaic is a haven for many species of birds that occur in this region. In order to analyze the Spot Index of Abundance of birds on the nearby beaches to caiçara Barra do Una, it was established 8 sample fixed points at a distance of 300 m each. Eight species of birds have been identified including 2 migratory bird and the bird that had the highest index was the gulls Larus dominicanus with IPA = 0.87, followed by thirty-king real Thalasseus maximus maximus with IPA = 0.25 and urubu-red-headed Cathartes aura with IPA = 0.25. Intervention of human actions on the natural environment in protected areas should be managed respecting the habits of these shorebirds, to save the few havens remaining in the São Paulo coast.


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