Importância das florestas ripárias no ambiente urbano de Caldas Novas-Go para a avifauna

Abstract

The unrestrained use of the natural environment due to socioeconomic development and advancement in the urbanization process has drastically altered the biogeographic scenario, fragmenting habitats and interfering with ecological dynamism. The present study aimed to evaluate the role of riparian vegetation in the urban environment of the municipality of Caldas Novas-GO for the maintenance of local avifauna. The work was developed along the Caldas stream, where 16 points were chosen for sampling the avifauna, 13 in an urban environment and three in the Serra de Caldas Novas State Park (PESCaN). The data were collected in the field from February 2019 to January 2020, using the fixed point observation method without sampling radius. The records were made through sound and / or visual contact in a standard time interval of 10 min per point/sample. A total of 107 bird species were recorded. The sampled points, in general, presented relatively similar species richness, but there was a change in the species composition between urban and PESCaN. It was observed that points closer to each other showed greater similarity regarding species composition. The eating habit was analyzed and insectivorous, omnivorous and frugivorous species were the most recurrent, occurring in all sampling points. The present study has shown that the urban environment can sustain considerable wealth of bird species, however the strong anthropization process can cause changes in the species composition of this environment. These results are important, as they can help in the planning of actions for a better ordering of the urban environment through the competent agency, thus minimizing the impacts resulting from the urbanization process on avifauna.