Is Silence Going Extinct? - NYTimes.com - 0 views
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since 2006, when scientists at Denali began a decade-long effort to collect a month’s worth of acoustic data from more than 60 sites across the park — including a 14,000-foot-high spot on Mount McKinley — Betchkal and his colleagues have recorded only 36 complete days in which the sounds of an internal combustion engine of some sort were absent.
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To restore ecosystems to acoustic health, researchers must determine, to the last raindrop, what compositions nature would play without us.
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Noise can mask mating calls, cause stress and prevent animals from hearing alarms, the stirrings of prey and other useful survival cues. And as climate change prompts a shift in creatures’ migration schedules, circadian rhythms and preferred habitats — reshuffling the where and when of their calls — soundscapes are altered, too.
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