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North American extinctions, including horses, were likely climate driven, say researchers
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The Max Planck Extreme Events Research Group, from left, W. Christopher Carleton, Mathew Stewart, Huw Groucutt and Angela Kiesewetter. Photo: MPI-CE
Overhunting by humans was not responsible for the extinction of horses, mammoths, ground sloths, and other North American megafauna, the findings of fresh research suggest.
Scientists say the latest evidence supports the view that climate change was behind the loss of some 37 species of megafauna a little over 10,000 years ago, near the end of the Pleistocene epoch.
Their findings, reported in the journal
Nature Communications, do not support a hypothesis, first discussed as far back as the late 18th century, that the extinctions arose by overhunting by expanding human populations following their entrance into the Americas. ....

United States , Huw Groucutt , Angela Kiesewetter , Mathew Stewart , W Christopher Carleton , Nature Communications , Max Planck Extreme Events Research Group , North American , North America , Late Quaternary North American , Late Quaternary , ஒன்றுபட்டது மாநிலங்களில் , ஏஞ்சலா கீேசெவேத்தேர் , மேத்யூ ஸ்டீவர்ட் , டப்ல்யூ கிறிஸ்டோபர் கார்லேடன் , இயற்கை தகவல்தொடர்புகள் , வடக்கு அமெரிக்கன் , வடக்கு அமெரிக்கா , தாமதமாக குவாட்டர்னரி வடக்கு அமெரிக்கன் , தாமதமாக குவாட்டர்னரி ,