Climate change lead to extinction of woolly rhino, finds study

A new study has revealed that poachers/human hunters were t responsible for extinction of woolly rhis but primary reason was found to be climate change. As per study, experts from Stockholm University sequenced ancient DNA extracted from 14 woolly rhis and found that ir population remained stable until only a few thousand years before it disappeared from Siberia due to rising temperatures. Scientists believed that extinction of se woolly mammoths is caused by spre of humans around globe and ir hunting patterns. 

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Rising temperatures led to extinction

study found that overhunting led to demise of some species but main reason of m getting extinct is rising global warming across region. study is published in journal Current Biology.  Love Dalen, a geneticist at Sweden's Centre for Palaeogenetics led study. 

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To learn about size and stability of woolly rhiceros population in Siberia, researchers studied DNA from tissue, bone, and hair samples of 14 individuals. "We sequenced a complete nuclear geme to look back in time and estimate population sizes, and we also sequenced fourteen mitochondrial gemes to estimate female effective population sizes," says co-first author Edana Lord, a PhD student at Centre for Palaeogenetics.

 

This stability lasted until well after humans began living in Siberia, contrasting declines that would be expected if woolly rhis went extinct due to hunting. "That's interesting thing," says Lord. "We actually don't see a decrease in population size after 29,000 years ago. data we looked at only goes up to 18,500 years ago, which is approximately 4,500 years before ir extinction, so it implies that y declined sometime in that gap."

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