Comparison of bird assemblage structures and diversity patterns between seasons among two Ethiopian wetlands

埃塞俄比亚两个湿地不同季节鸟类群落结构和多样性模式的比较

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Abstract

Wetlands are significant habitats for bird populations, and knowledge of the diversity and other ecological aspects of bird species contribute to the management of the ecosystem. The present study was based on comparative studies of the diversity and relative abundance of bird species in the two wetlands of southwest Ethiopia. The point count method was utilized in this study. For the data analysis, the Shannon-Weaver diversity index, independent sample t-test, and similarity index were employed. A total of 36 bird species under 11 orders and 24 families were identified. The species diversity and relative abundance were higher in both wetlands during the wet season. The Loga wetland had the higher diversity (H' = 3.089), whereas the lowest species diversity (H' = 2.643) was recorded in the wetland of Hurri. During the dry season, the Loga wetland (H' = 2.738) and the Hurri habitat (H' = 2.283) had higher and lower diversity, respectively. Seasonal variations in bird species diversity are not statistically significant (p > 0.05). Although the two wetlands support several water birds, they have received no conservation attention from concerned bodies. Further follow-up studies over a long period will help determine species-specific conservation measures for wetland-dependent birds.

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