For more than 40 years, scientists have used radio telescopes to probe starry regions trillions of miles away for sounds of alien life. But only in the past five years or so have they been able to reliably record monthslong stretches of audio in the wildernesses of Earth. Last March, a group of ecologists and engineers taking advantage of advances in collecting, storing and analyzing vast quantities of digital data declared a new field of science: soundscape ecology ... Though soundscape ecology has hardly begun, natural soundscapes already face a crisis. Humans have irrevocably altered the acoustics of the entire globe ... Missing or altered voices in a soundscape tend to indicate broader environmental problems. For instance, at least one invasive species, the red-billed leiothrix of East Asia, appears to use its clamorous chatter to drown out the native European blackbird in Northern Italy. 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. Soundscape ecologists hope they can save some ecosystems, but they also realize they will bear witness to many finales.Kim Tingley, "Is Silence Going Extinct?" New York Times Magazine, 3/15/2012.
Elizabeth Atterbury: Pigeon Hawk, 2011. Erased lithograph. 12 x 9 inches. Via I'm Revolting.