Vertebrate road kills on State Highway 26 in Khandwa Forest Division, central India
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Abstract
The road network is spreading rapidly in human dominated as well as forested areas in India. Roads passing through forested areas are known to negatively impact wildlife populations by contributing to wildlife-road kills besides causing habitat fragmentation, soil erosion, and disruption of gene flow. This paper documents encounters of wildlife road kills on the State Highway 26 (SH 26) passing through the forested area of Khandwa Territorial Forests in central India. Between October 2015 and June 2017 and from November 2021 to June 2022 we collected opportunistic data on wildlife mortalities on SH 26. We recorded 61 wildlife mortalities on a stretch of 34 km of SH 26. Of the road kills encountered, 71% were birds, 21% were mammals, and 8% were herpetofauna. Highest among bird kills were members of nightjars (Caprimulgidae) (26%) and owls (Strigidae) (23%). Among owls, we recorded two road kills of the endangered Forest Owlet Athene blewitti and individuals of five other owl species. Among other taxa, road-hits of Jungle Cat, Indian Palm Civet, Golden Jackal, Central Indian Langur, and a few snakes were recorded. Most bird kills on the road were recorded in February while the highest number of mammal and herpetofauna kills were recorded in the month of November. We report that the land use around the road and species trait contribute to vulnerability of a species to road-hit. Based on the frequency of road kills, we have identified seven hotspots of road kills on SH 26. Since road construction is one of the major mandates of the Government in India, it is suggested to carry out systematic environment impact assessment on existing and proposed roads to understand the patterns of spatio-temporal incidents of road kills. Planting of tall trees and installation of speed bumps and signboards to alert drivers should be planned at the initial stage of road construction. If appropriate mitigation measures to prevent wildlife mortalities are incorporated while the road is being constructed, it may be possible to bridge the gap between development and conservation.
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