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The Times of India
The Times of India
World
TOI World Desk

In 1995, the United States released 31 grey wolves from Canada into Yellowstone after the predators had been exterminated for nearly 70 years, hoping to rebuild a collapsing ecosystem; today, wolves have helped restore elk numbers, willow forests and beaver populations

Yellowstone Canada United States

For almost 70 years, one of the most famous American national parks lacked its primary predator. By 1926, grey wolves had been eliminated from Yellowstone National Park in accordance with government programmes aimed at controlling predators. As a result, the park’s ecosystem lost its balance, and the number of elk grew; young willow and aspen forests stopped regenerating. Species that required healthy riverbank vegetation began to vanish.

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