Effect of urbanization on bird community in riparian environments in Caí River, Rio Grande do Sul, Brazil

Jaqueline Brummelhaus, Márcia Sueli Bohn, Maria Virginia Petry

Resumo


Urbanization produces changes in riparian environments causing effects in the structure of bird communities, which respond differently to impacts. We compare richness, abundance and composition of birds in riparian environments with different urbanization gradients in Caí River, Rio Grande do Sul. We conducted observations in woodland, grassland and urban environments, between September/2007 and August/2008. We recorded 130 bird species, 29 species unique to woodland environments, including an endangered species: Triclaria malachitacea. Bird abundance differed between woodland and urban environments (426 individuals in woodland, 721 in grassland and 939 in urban). Species composition and feeding guilds contributed significantly to differentiation of bird community structures in these three riparian environments. In open environments (grassland and urban) we recorded more generalist feeding guilds and bird species, while in riparian woodland environments, we find guilds and species more sensitive to human impacts. Bird species may be biological quality indicators and contribute to natural economy. With the knowledge of bird community structure and their needs, it is possible to establish management practices for riparian restoration of degraded environments in the region.


Palavras-chave


Riparian woodland; grassland; forest fragmentation; frugivore birds; insectivore birds

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DOI: https://doi.org/10.5007/2175-7925.2012v25n2p81

Direitos autorais 2012 Jaqueline Brummelhaus, Márcia Sueli Bohn, Maria Virginia Petry

Licença Creative Commons
Esta obra está licenciada sob uma licença Creative Commons Atribuição 4.0 Internacional.

Biotemas. UFSC, Florianópolis, SC, Brasil, eISSN 2175-7925

Licença Creative Commons
Este periódico está licenciado conforme Creative Commons Atribuição 4.0 Internacional.