Anthropogenic noise reduces bird species richness and diversity along a Rur-urban gradient: A case study from a city in central India during nationwide lockdown amid COVID-19

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Research Paper 01/01/2022
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Anthropogenic noise reduces bird species richness and diversity along a Rur-urban gradient: A case study from a city in central India during nationwide lockdown amid COVID-19

Garima Tiwari and Fergus Mark Anthony
J. Bio. Env. Sci.20( 1), 1-9, January 2022.
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Urbanization is increasing rapidly in all parts of the world to accommodate the increasing human population but it is having a drastic effect on native flora and fauna. The present study was carried out across a three stage urbanization gradient in and around the city of Bilaspur, Chhattisgarh. Observations were made from September 2019 to February 2021 at the selected three sites during COVID 19 pandemic. Point count method was used for bird surveys and Sound pressure (Noise) measurements were made across the three selected sites. The Avian diversity was measured by total species richness, Fisher’s alpha diversity index and Shannon-Wiener diversity index. The Urban centre recorded the highest sound pressure and lowest Avian species richness but as we moved away from the urban centre the noise levels reduced and the avain species richness increased towards the rural areas. This is mainly due to many avian species avoiding urban areas because of increasing noise levels. We also found that the urban bird community is dominated by a few species whereas the rural bird community was much more diverse.


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