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News number: 8710301287

15:05 | 2009-01-19

Science

نسخه چاپي ارسال به دوستان

Light Pollution Affects Animal Behavior

TEHRAN (FNA)- An international team of researchers found that polarized light can be as dangerous to animal species as direct light sources.



According to the study published in the Frontiers in Ecology and the Environment, polarized light pollution can adversely affect wildlife and change the behavior of many species.

Researchers mentioned road surfaces and glass buildings as the main sources of polarized light pollution, BBC reported.

Bright buildings and street lamps have overwhelmed water as the primary source of horizontal polarized light, luring animals such as baby sea turtles away from ocean where they must head towards using the direction of starlight and moonlight reflected off the water's surface.

"Any kind of shiny, black object - oil, solar cells, asphalt - causes problems," explained Co-author Bruce Robertson, from Michigan State University.

Researchers also said that over 300 insect species use polarized light as the primary source for navigation and finding suitable water bodies to use as feeding/breeding habitats.

Scientists said that polarized light pollution (PLP) can also disrupt food webs and marine life.

Researchers believe the worst examples of PLP could be reduced by using alternative building material or adding white curtains to dark windows and white markings on road surfaces.

Dr. Robertson said that the findings could help find alternative methods of dealing with problematic species.

"You may be able to create massive polarized light traps to crash bark beetle populations," he suggested.