By Herp News
Twenty-three days before a major earthquake in 2011 animals began disappearing from part of Yanachaga National Park in Peru. By 24 hours before the quake they had completely vacated the area. A recent study documenting the animals’ retreat with camera-trap data suggests that animals may have an uncanny ability to sense and flee from irritating portents of seismic activity. Historically, scientists have dismissed accounts of animals acting strangely before earthquakes, mostly due to the anecdotal nature of the accounts and a lack of reliable sources. “[T]he infrequency and unpredictability of earthquakes means that most relevant pre-earthquake studies suffer, of necessity, from small sample sizes and from difficulties with reproducibility under comparable conditions,” states the recent study, published in the journal Physics and Chemistry of the Earth. However, a few credible observations of odd animal behavior do exist. For instance, before a magnitude 6.3 earthquake in L’Aquila, Italy, in 2009, researchers detected unusual toad behavior in areas where they also detected atmospheric disturbances that typically occur before earthquakes. Paca rodent (Cuniculus-paca). Photo courtesy of the TEAM Network. The present study relied on images from motion-capture cameras set up in Yanachaga National Park by the Virginia-based conservation group Tropical Ecology and Assessment and Monitoring Network. For 30 days leading up to the earthquake — and one day after — the cameras operated round the clock in nine separate locations throughout the park, capturing animal movements. Zoologist Rachel Grant of Hartpury College in Gloucester, England, and her colleagues geophysicist…
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Read more here: herpetofauna.com
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