<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The present study attempts to assess the composition, abundance and diversity of avifauna with respect to their habitat in and around the Purbasthali wetland, based on both primary data collected through the point count method during 2017–2019 and literature data. Among the total 77 species (encompassing 10 orders and 19 families), 39 species are migrants, 18 are rare and 24 species show declining global trend. According to their habitat, they are sub-divided into three categories i.e. <italic>waterfowls</italic> (live in open water, 20 species), <italic>waders</italic> (live in bank areas/water edge area, 45 species) and <italic>wetland associated</italic> (live in nearby trees, 12 species). The Shannon-Wiener Diversity Index (H’) and the Evenness Index (E’) are used to examine the diversity within and between the habitats. The result reveals higher diversity and evenness of the waders in comparison to others. The maximum diversity (H′=3.02) and evenness (E′=0.79) has been recorded for the waders in 2019, whereas the least values (H′=1.02, E′=0.34) have been found in 2016 for the waterfowls. Relative Diversity Index affirms the dominance of the <italic>Anatidae</italic> family. The birds of the area have now been seriously threatened by human intervention.</p>
</abstract>

The present study attempts to assess the composition, abundance and diversity of avifauna with respect to their habitat in and around the Purbasthali wetland, based on both primary data collected through the point count method during 2017–2019 and literature data. Among the total 77 species (encompassing 10 orders and 19 families), 39 species are migrants, 18 are rare and 24 species show declining global trend. According to their habitat, they are sub-divided into three categories i.e. waterfowls (live in open water, 20 species), waders (live in bank areas/water edge area, 45 species) and wetland associated (live in nearby trees, 12 species). The Shannon-Wiener Diversity Index (H’) and the Evenness Index (E’) are used to examine the diversity within and between the habitats. The result reveals higher diversity and evenness of the waders in comparison to others. The maximum diversity (H′=3.02) and evenness (E′=0.79) has been recorded for the waders in 2019, whereas the least values (H′=1.02, E′=0.34) have been found in 2016 for the waterfowls. Relative Diversity Index affirms the dominance of the Anatidae family. The birds of the area have now been seriously threatened by human intervention.

Assemblage of wetland bird Species in Purbasthali Oxbow Lake, West Bengal, India: Implications for Management

Ornis Hungarica

This work is licensed under the Creative Commons Attribution 4.0 International License.

The present study attempts to assess the composition, abundance and diversity of avifauna with respect to their habitat in and around the Purbasthali wetland,...

Assemblage of wetland bird Species in Purbasthali Oxbow Lake, West Bengal, India: Implications for Management

Publié en ligne: 29 nov. 2021

Pages: 25 - 45

Reçu: 15 juil. 2021

Accepté: 11 oct. 2021

DOI: https://doi.org/10.2478/orhu-2021-0017

Mots clés
Shannon-Wiener Diversity Index, Purbasthali wetland, habitat, Relative Diversity Index, migratory birds

© 2021 Mehedi Hasan Mandal et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Assemblage of wetland bird Species in Purbasthali Oxbow Lake, West Bengal, India: Implications for Management

Publié en ligne: 29 nov. 2021

Pages: 25 - 45

Reçu: 15 juil. 2021

Accepté: 11 oct. 2021

DOI: https://doi.org/10.2478/orhu-2021-0017

Mots clésShannon-Wiener Diversity Index, Purbasthali wetland, habitat, Relative Diversity Index, migratory birds

© 2021 Mehedi Hasan Mandal et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
Shannon-Wiener Diversity Index, Purbasthali wetland, habitat, Relative Diversity Index, migratory birds