Avian diversity in wetlands of southwestern Kerala of India during COVID
DOI:
https://doi.org/10.11609/jott.9379.17.2.26494-26503Keywords:
Avian Diversity, Berger-Parker, biodiversity indices, COVIDian era, Margalef, Pielou, Polachira, Pozhikkara, Shannon-WienerAbstract
The COVID-19 pandemic, known as the COVIDian era, has impacted ecosystems worldwide, including wetlands, which are essential habitats for avian biodiversity. The study on bird diversity in the wetlands of Kollam District, southwestern part of Kerala, employed a combination of field surveys and observational methods to assess the avian communities across various habitats. The survey areas were selected based on their significance as wetland ecosystems and included Polachira, Pozhikkara, and associated wetlands within Kollam District. The study documented 98 bird species across 41 families and 15 orders. Passeriformes was the most diverse order with 37 species, followed by Pelecaniformes and Charadriiformes with 13 species each. Apodiformes, Podicipediformes, and Psittaciformes each had a single recorded species. Ardeidae was the most abundant family with 10 species, followed by Rallidae (six species), Sturnidae, and Scolopacidae (five species each). Among the bird species recorded, 16 were migratory, 76 were resident, and six were local migrants. The study assessed bird diversity across Polachira, Pozhikkara, and associated wetlands using various indices, including Simpson, Simpson’s λ, Simpson’s D, Margalef, Berger-Parker, Shannon-Wiener, and Pielou. Shannon-Wiener diversity index at Polachira is 4.46, Pozhikkara 4.47 and associated wetlands is 4.45, which suggests that the overall avian diversity is comparable among these wetlands. Pozhikkara appears to have slightly higher species richness (Margalef’s index 14.64) and slightly lower dominance (Berger-Parker index 35.90) compared to the other two sites. This study elucidates the effects of pandemic-related disruptions on bird populations, highlighting the resilience and vulnerabilities of avifauna in wetland ecosystems.
References
Anoop, C., P.V. Bhanu, R. Devika, B.S. Thasni, V. Devipriya, S. Reshma & S. Fathima (2017). An investigation of the avian diversity in the wetlands of Kollam District. B.Sc Project Report. University of Kerala, 57 pp
Aswathy, T.S., A.L. Achu, S. Francis, G. Gopinath, S. Joseph, U. Surendran & P.S. Sunil (2021) Assessment of water quality in a tropical Ramsar Wetland of southern India in the wake of COVID-19, Remote Sensing Applications. Society and Environment 23: 100604. https://doi.org/10.1016/j.rsase.2021.100604
Berger, W.H. & F.L. Parker (1970). Diversity of planktonic Foraminifera in deep-sea sediments. Science 168(3937): 1345–1347. https://doi.org/10.1126/science.168.3937.1345
Bolwig, S., D. Pomeroy, H. Tushabe & D. Mushabe (2006). Crops, trees, and birds: biodiversity change under agricultural intensification in Uganda’s farmed landscapes. Geografisk Tidsskrift - Danish Journal of Geography 106(2): 115–130. https://doi.org/10.1080/00167223.2006.10649561
Buckland, S.T., S.J. Marsden & R.E. Green (2008). Estimating bird abundance: making methods work. Bird Conservation International 18(S1): S91–S108. https://doi.org/10.1017/S0959270908000294
Byju, H., N. Raveendran, S. Ravichandran & R. Kishore (2023). An annotated checklist of the avifauna of Karangadu mangrove forest, Ramanathapuram, Tamil Nadu, with notes on the site’s importance for waterbird conservation. Journal of Threatened Taxa 15(3): 22813–22822. https://doi.org/10.11609/jott.8356.15.3.22813-22822
Cooke, S.J., P. Soroye, J.L. Brooks, J. Clarke, A.L. Jeanson, A. Berberi & J.R. Bennett (2021). Ten considerations for conservation policy makers for the post-COVID-19 transition. Environmental Reviews 29(999): 1–8. https://doi.org/10.1139/er-2021-0014
Evans, K.L., D.E. Chamberlain, B.J. Hatchwell, R.D. Gregory & K.J. Gaston (2011). What makes an urban bird? Global Change Biology 17(1): 32–44. https://doi.org/10.1111/j.1365-2486.2010.02247.x
Friedrich, J., J. Zscheischler & H. Faust (2021). Social-ecological transformation and COVID-19: the need to revisit working-class environmentalism. GAIA-Ecological Perspectives for Science and Society 30(1): 18–22. https://doi.org/10.14512/gaia.30.1.5
Gatesire, T., D. Nsabimana, A. Nyiramana, J.L. Seburanga & M.O. Mirville (2014). Bird diversity and distribution in relation to urban landscape types in Northern Rwanda. Scientific World Journal 2014: 1–12. https://doi.org/10.1155/2014/157824
Jaman, M.F., S.U. Sarker & N.J. Sarker (1999). Food habits and feeding behavior of Black Drongo, Dicrurus macrocercus albirictus (Hodgson). Bangladesh Journal of Zoology 26(2): 57–66.
Klemetsen, A. & R. Knudsen (2013). Diversity and abundance of water birds in a subarctic lake during three decades. Fauna Norvegica 33: 21–27. https://doi.org/10.5324/FN.V33I0.1584
Laseetha, T.G., K.J. Mohan, S. Jisha & B. Hari (2023). Diversity of Charadriiform birds from a tropical wetland. Ecology, Environment & Conservation 29: S129–S137. http://doi.org/10.53550/EEC.2023.v29i04s.022
Lecocq, T., S.P. Hicks, K. van Noten, K. van Wijk, P. Koelemeijer, R.S.M. de Plaen, F. Massin, G. Hillers, R.E. Anthony, M.T. Apoloner & H. Xiao (2020). Global quieting of high-frequency seismic noise due to COVID-19 pandemic lockdown measures. Science 369(6509): 1338–1343. https://doi.org/10.1126/science.abd2438
Lekshmy, S. (2014). Biodiversity of wetland birds in Nilamel and Chadayamangalam, Kollam, Kerala. Journal of Aquatic Biology and Fisheries 2: 303–307.
Liang, Y., I. Rudik, E.Y. Zou, A. Johnston, A.D. Rodewald & C.L. Kling (2020). Conservation cobenefits from air pollution regulation: evidence from birds. Proceedings. National Academy of Science 117: 30900–30906. https://doi.org/10.1073/pnas.2013568117
Madhok, R. & S. Gulati (2022). Ruling the roost: avian species reclaim urban habitat during India’s COVID-19 lockdown. Biological Conservation 271: 109597. https://doi.org/10.1016/j.biocon.2022.109597
Mahato, S., S. Pal & K.G. Ghosh (2020). Effect of lockdown amid COVID-19 pandemic on air quality of the megacity Delhi, India. Science of the Total Environment 730: 139086. https://doi. org/10.1016/J.SCITOTENV.2020.139086
Mallin, M., M. McIver, E. Wambach & A. Robuck (2016). Algal blooms, circulators, waterfowl, and eutrophic Greenfield Lake, North Carolina. Lake and Reservoir Management 32: 168–181. https://doi.org/10.1080/10402381.2016.1146374
Margalef, R. (1958). Information theory in ecology. General Systematics 3: 36–71.
McClure, C.J.W., H.E. Ware, J. Carlisle, G. Kaltenecker & J.R. Barber (2013). An experimental investigation into the effects of traffic noise on distributions of birds: avoiding the phantom road. Proceedings of the Royal Society B. 280(1773): 1–9. https://doi.org/10.1098/rspb.2013.2290
McKinney, M.L. (2006). Urbanization as a major cause of biotic homogenization. Biological Conservation 127: 247–260. https://doi.org/10.1016/j.biocon.2005.09.005
Nadeau, C.P., C.J. Conway, B.S. Smith & T.E. Lewis (2008). Maximising detection probability of wetland- dependent birds during point-count surveys in northwestern Florida. The Wilson Journal of Ornithology 120(3): 513–519. https://doi.org/10.1676/07-041.1
Pielou, E.C. (1969). An Introduction to Mathematical Ecology. Wiley, New York, viii + 286 pp. https://doi.org/10.1002/bimj.19710130308
Rajia, S., M.M. Alam, G.W. Chowdhury, M. Akash & M.A. Islam (2015). Status and diversity of birds of Ramna Park, Dhaka, Bangladesh. Bangladesh Journal of Zoology 43(2): 291–301. https://doi.org/10.3329/bjz.v43i2.27399
Rocha, E.A. & M.D.E. Fellowes (2018). Does urbanization explain differences in interactions between an insect herbivore and its natural enemies and mutualists? Urban Ecosystems 21: 405–417. https://doi.org/10.1007/s11252-017-0727-5
Sahagun, L. (2020). Coyotes, falcons, deer, and other wildlife are reclaiming L.A. territory as humans stay at home. Los Angeles Times. Available at: https://www.latimes.com/environment/story/2020-04-21/wildlife-thrives-amid-coronavirus-lockdown Accessed on ?
Sanderfoot, O.V. & T. Holloway (2017). Air pollution impacts on avian species via inhalation exposure and associated outcomes. Environmental Research Letters. 12: 083002. https://doi.org/10.1088/1748-9326/aa8051
Schirmel, J., M. Bundschuh, M.H. Entling, I. Kowarik & S. Buchholz (2016). Impacts of invasive plants on resident animals across ecosystems, taxa, and feeding types: a global assessment. Global Change Biology 22(2): 594–603. https://doi.org/10.1111/gcb.13093
Shannon, C.E. & W. Weaver (1949). A Mathematical Model of Communication. University of Illinois Press, Urbana. https://doi.org/10.1002/j.1538-7305.1948.tb01338.x
Shannon, G., M.F. McKenna, L.M. Angeloni, K.R. Crooks, K.M. Fristrup, E. Brown, K.A. Warner, M.D. Nelson, C. White, J. Briggs, S. McFarland & G. Wittemyer (2015). A synthesis of two decades of research documenting the effects of noise on wildlife. Biological Reviews 91: 982–1005. https://doi.org/10.1111/BRV.12207
Sharma, S., M. Zhang, J.A. Gao, H. Zhang & S.H. Kota (2020). Effect of restricted emissions during COVID-19 on air quality in India. Science of the Total Environment 728: 138878. https://doi.org/10.1016/J.SCITOTENV.2020.138878
Shome, A.R., M.M. Alam, M.F. Rabbe, M.M. Rahman & M.F. Jaman (2020). Diversity, status, and habitat usage of avifauna at Sadar Upazila, Magura, Bangladesh. Bangladesh Journal of Zoology 48(2): 441–456. https://doi.org/10.3329/bjz.v48i2.52434
Slabbekoorn, H. (2013). Songs of the city: noise-dependent spectral plasticity in the acoustic phenotype of urban birds. Animal. Behaviour 85: 1089–1099. https://doi.org/10.1016/J.ANBEHAV.2013.01.021
Strohbach, M.W., D. Haase & N. Kabisch (2009). Birds and the city: urban biodiversity, land use, and socioeconomics. Ecology and Society 14(2): 31.
Thomas, G., J. Thomas, R.S. Devika, A. Krishnan, V.M. Anju & J.N. Amrutha (2023). Impact of COVID-19 lockdown on ambient air quality in the southwest coastal urban regions of India. Aerosol Science and Engineering 7: 303–314. https://doi.org/10.1007/s41810-023-00180-x
Venter, Z.S., K. Aunan, S. Chowdhury & J. Lelieveld (2020). COVID-19 lockdowns cause global air pollution declines. Proceedings of the National Academy of Sciences 117: 18984–18990. https://doi.org/10.1073/pnas.2006853117
Warrington, M.H., M.B. Schrimpf, P.D. Brisay, M.E. Taylor & N. Koper (2022). Avian behaviour changes in response to human activity during the COVID-19 lockdown in the United Kingdom. Proceedings of the Royal Society B. 289: 20212740. https://doi.org/10.1098/rspb.2021.2740
Zellmer, A.J., E.M. Wood, T. Surasinghe, B.J. Putman, G.B. Pauly, S.B. Magle, S.L. Jesse, A.M.K. Cria & M. Fidino (2020). What can we learn from wildlife sightings during the COVID-19 global shutdown? Ecosphere 11(8): e03215. https://doi.org/10.1002/ecs2.3215
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