Bird community in a forest patch isolated by the urban matrix at the Sinos River basin, Rio Grande do Sul state, Brazil, with comments on the possible local defaunation

Brazilian Journal of Biology

I. Franz¹  L. Cappelatti¹  Mp Barros¹ 

[1] ,Centro Universitário Feevale Instituto de Ciências da Saúde Laboratório de ZoologiaNovo Hamburgo RS ,Brazil

关键词: avifauna;    conservation;    extinction;    forest fragmentation;    avifauna;    conservação;    extinção;    fragmentação florestal;   

DOI  :  10.1590/S1519-69842010000600002

来源: SciELO

【 摘 要 】

We compared the avifauna recorded in a recent survey in an urban park (Parque Municipal Henrique Luís Roessler, Parcão) and surroundings, Novo Hamburgo, RS, with past data, to evaluate the possible alterations in species composition over time. Of the 265 species compiled as original elements of that region, 114 were found at Parcão. Among forest species, 37% were considered locally extinct. The most affected guild was the large frugivores, with nine extinct species and one survivor (Trogon surrucura). Birds highly sensitive to disturbance as well as endemic species were the most extinguished. The possible causes for this loss are fragmentation, hunting and environmental changes. The diversity today is threatened, thus conservation measures are necessary in that region. The most important actions are: maintenance of ecological corridors, protection of natural remnant areas and the establishment of protected areas.

【 授权许可】

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