Windmills not so green for wildlife

Windmills not so green for wildlife

What is Important?
UPSC perspective:
Prelims:Not Much
Mains Paper 3:Hazards of Windmills,Problem of Collision


Why in News:

The impact of the giant structures in Karnataka was studied by researchers from Salim Ali Centre for Ornithology and Natural History (SACON) during a two­ year project. They found that windmills killed birds and bats in collisions, and that birds and mammals also moved away due to the noise.

Hazards of Windmills

*The impact of the giant structures in Karnataka was studied by researchers from Salim Ali Centre for Ornithology and Natural History (SACON) during a two-year project.

*Such avoidance and movement to [forest] fringes might increase conflict with humans.

*The noise levels near windmills go up to 85 decibels (dB), the equivalent of large trucks.

*The drone of a turbine, which operates day and night, is above 70dB. By comparison, noise in urban areas is 55 dB and even in industrial areas, is lower at 75dB.

*Ambient noise in forests is less than 40 dB. Such avoidance and movement to forest fringes might increase conflict with humans.

*The study calls for protocols and policy guidelines before diverting forest land for wind farms, states the study.

Problem of Collision

*The team saw collisions of 10 animals — 6 bats and four birds — with a collision rate of 0.23 animals per year per turbine.

*While the collision rate was low compared to other locations, it could not be ignored as the bulk of them took place in a short span of time, the study says.

*Researchers found birds avoiding windmill sites.

*There are 50% fewer birds in the areas compared to undisturbed sites.



Windmills not so green for wildlife Windmills not so green for wildlife Reviewed by The Hindu Current Affairs on October 15, 2018 Rating: 5

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