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Effects of Anthropogenic Light and Urbanization

Effects of Anthropogenic Light and Urbanization - Lechi...

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Lechi Nwanegwo Topic of Biology 1117 Professor Thorington March 31, 2014 Effects of Anthropogenic Light and Urbanization Urbanization, identified as a global threat to biodiversity caused disruptions of species’ habitat ranging from forests to coastal areas close to cities. The past century witnessed dramatic changes in nightscapes through the increasing global use of electric lights (Riegel1973; Smith 2009). Night skies in the country sprinkled with brighter stars are more visible in some remote areas with the Milky Way Galaxy extended across the sky from east to west. In contrast, city skies illuminated with artificial lights hid many to all stars. Interference of enough artificial lights to hide the night skies, scientists dubbed light pollution. Light pollution, resulted from outdoor lights aimed upward or sideways caused light to scatters in the atmosphere and reflects back to the ground. The result established sky glow. Particles in the atmosphere responsible for air pollution accentuated light pollution by increasing the amount of light
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