Abstract

Aim: The aim of the present study was to estimate the diversity and abundance of native bee fauna in an urban green space in Bengaluru, India. Methodology: Native bees were sampled from ten observational plots randomly selected from a 20 ha urban green space. Bee diversity and abundance were recorded at 15-day interval and estimated using diversity indices. Results: Nineteen species and thirteen genera under Apidae, Halictidae, and Megachilidae family were recorded. Bee species under Apidae were the most abundant, with four social, five solitary, and one kleptoparasitic species, followed by Halictidae and Megachilidae, with five and four solitary bee species, respectively. Trigona iridipennis was the dominant species followed by Apis dorsata among the social bees, and Lasioglossum sp. and Hriades sp. were dominant among the solitary bees. The number of cavity-nesting species was more that of tree-nesting or ground-nesting species. Shannon’s and Simpson’s diversity indices confirmed the species richness, species abundance, and uniform distribution of native bee species in the urban green space. Interpretation: Green patches within urban areas can support a diverse population of bees. The study area consisted of both social and solitary bees. Cavity-nesting and oligolectic generalist bees were more predominant in the urban area, thus confirming the role of urban spaces in adding to bee diversity. Green pockets within urban areas support a diverse population of bees, and urban green spaces and green corridors can help to conserve bee biodiversity and, in turn, the urban ecosystem.

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