Avian community structure in human dominated landscape in Daudkandi, Bangladesh

Saha, Arnob and Alam, Md. Mahabub and Jaman, Mohammad Firoj and Saha, Nirmalya and Rahman, Md. Mokhlesur (2022) Avian community structure in human dominated landscape in Daudkandi, Bangladesh. COMMUNITY ECOLOGY, 23 (3). pp. 301-313. ISSN 1585-8553 (print); 1588-2756 (online)

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Abstract

Bangladesh shelters a very rich and diverse avifauna. Anthropogenic activities have a global impact on avifauna, particularly in Bangladesh, where human disturbances and unplanned urbanization can lead to the decline of this particular taxon. A direct observation-based study was conducted to investigate the avian community structure in Daudkandi Upazila, Bangladesh. We used the line transect method at 65 sampling grids to assess the avifauna from May 2019 to March 2020. We evaluated the bird assemblage structures by α diversity and β diversity. Ninety-six species of bird belonging to thirteen orders were recorded. We found the rural study site to be more diverse (H′ = 3.835) and evenly distributed (J′ = 0.88) than urban and semi-urban sites. ANOSIM test also showed that the rural avian community differed significantly from other two communi- ties (R = 0.1603; P = 0.0001). We calculated dispersion patterns of birds and found clumped pattern to be more common (83 species) in the study area. This study discovered some anthropogenic activities, in addition to human intrusions, that may have reduced avian diversity in urban and semi-urban habitats. Our findings indicated the need for immediate conservation efforts to protect a large number of breeding residents and winter migratory birds in the study area.

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