Abstract
Objectives: To assess the temporal variations of the large wading birds in the Point Calimere Wildlife Sanctuary and to suggest management recommendations for the better management of the wading birds visited in the sanctuary seasonally. Methods and Statistical analysis: The population characteristic of large wading birds was carried out by employing a ‘direct count’ method. The one-way analysis of variance (ANOVA) was performed to understand the impact of various seasons on the population characteristics of large wading birds. Findings: In total, 13 species of large wading birds were observed. Among the 13 species, the Black-headed Ibis and Painted stork are Near Threatened category (IUCN, 2020). Greater Flamingos showed the highest density than the other large wading birds observed from the PCWLS. The density, diversity and species richness of large wading birds were relatively greater in monsoon than the other seasons studied. The population characteristics of large wading birds varied significantly among the months and seasons (P<0.001). Novelty and applications : The diversity of large wading birds is declined when compared to the previous studies. The study revealed that the PCWLS is required intensive assessment of the various ecological factors of the sanctuary for managing various species of waterbirds visited seasonally. Keywords: Conservation; large wading birds; population; waterbirds; wetlands
Highlights
Waterbirds are persistently associated with the freshwater, coastal and marine habitats[1] Numerous species of waterbirds are well known for their long-distance migration [2,3]
The study found that 13 species of large wading birds recorded from the sanctuary, but the results revealed that the species of large wading birds and their population is declined when compared to the previous studies
The wetland habitats are vanishing and the wetlands should be conserved because the wetlands are supporting numerous species of waterbirds and other aquatic organisms seasonally
Summary
Waterbirds are persistently associated with the freshwater, coastal and marine habitats[1] Numerous species of waterbirds are well known for their long-distance migration [2,3]. More than 2000 wetlands about 4.1 million hectares of wetlands are identified in India [5] All these wetlands are supporting several species of migratory waterbirds and shorebirds, in which, 42 wetlands are designated as Ramsar sites in India [6]. Since the wetlands are providing sufficient energy for the various species of waterbirds the wetlands are attracting migratory and resident bird species waterbirds[12]. The assessment of bird density, diversity and species richness of waterbirds is the most critical aspect because these characteristics could enable the status of the various species of waterbirds in a given wetland habitat [13,14]
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