Impact of newly established bengaluru international airport (BIA) on local biodiversity
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Date
2013-06-29
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University of Agricultural Sciences, Bengaluru
Abstract
Studies were conducted in Devanahalli and surrounding airport area during 2009-2010. Due to development of BIA cultivation of land has ceased, native people have lost their occupation and profession. Families here were rehabilitated and there by natural resources have been poorly compensated. As per the digitized maps estimates with GIS tools, the area under cultivation before establishment of BIA covered 43% of the land mass and today it’s not in practice. There has been a loss by 52.83% of the water bodies and 37.32% of forest cover in its precincts. Forest cover not only has reduced quantitatively and also reduced qualitatively in terms of loss of species of high conservation values. There was negligible (0.15%) patches of land under built-up before BIA; currently 16.35% area is under built up. Earlier to BIA establishment the disturbed/excavated area was totally absent. However after BIA establishment the area increased by 48.29%. 65 bird species were identified in the study area during 2009-2010 which includes some of the rare bird species were Grey Wagtail, Black Drongo, Sykes’s Crested Lark, Rosy Starling, Blue Rock-Thrush, Small Green-Billed Malkoha, Indian Treepie, Bay-Backed Shrike, Grey-Headed Starling, Asian Paradise Flycatcher, Black Shouldered Kite,Spotted Owlet, Black Kite, Mottled Wood-Owl, Eurasian Golden Oriole and Barn Owl. Some of the bird species which could not tolerate built up area as a habitat must have moved to the surrounding hospitable areas. The butterflies and birds species showed a remarkable change comparing with the other locations at Ramanahalli.
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land resources, area, ecosystems, biological phenomena, land management, planting, land improvement, fruits, surface water, irrigation