The background is that the northern forests began to grow in place of the mammoth mound.
Herds wading in the woods of our forests after deer, deer and deer, but from the point of view of the wolf it is no ancient way.
During the ice age, herds chilled on low-snow mammoth tracks and chased mostly horses there, Canadian and U.S. researchers say.
During the glaciation phases, the deforested mammoth tern, or arotundra, stretched from Europe through North Asia to Alaska and the Yukon in Canada.
There was so little rain in the area that the winter snow was not enough to accumulate continental glaciers but melted away in the summer. However, the moisture was drenched in the grass and hay, and they fed the great herbivores.
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It was by adjusting their eating habits that the wolf avoided disappearing with the rest of the megafauna.
Researchers investigated the diet of wolves in the Yukon, which was the eastern end of the mammoth tern and from the east and south of which began the continental glacier that covered the rest of Canada.
Based on the isotopic composition of their bones, the wolves that fed Yukon’s mammoth plow ate the most horses and the second most mammoths, says research report Palaeogeography, Palaeoclimatology, Palaeoecology.
Nowadays Even the Yukon wolves taste like deer.
As such, the diet began to change according to bone composition only as the ice age waned as mammoth scars with their mammoths and large herds of horses dwindled.
Apparently just by adjusting their eating habits, the wolf avoided disappearing with the rest of the megafauna, the researchers interpret.
At the time of the melting of the glaciers, the climate changed more slowly at the eastern end of the mammoth mound than at the western end. Perhaps that is why the wolves of the East have the smoothest time adapting.
Based on DNA comparisons, it is thought that the world’s wolves today — and probably dogs — are inherited from the ancient wolves that lived twenty thousand years ago at the eastern end of the mammoth tern, Beringia.
From there, they spread elsewhere and replaced the older lineages in other areas. Because the sea level was low due to the water bound by the glaciers and the Bering Strait between Siberia and Alaska was dry, Beringia was enough for wolves to run from the mountains of Eastern Siberia to the Yukon.
Published in Science Nature 1/2022
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