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Wolves' Impact on Yellowstone's Ecosystem Sparks Controversy

12/2/2025

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Summary

Story summary

Yellowstone National Park, the oldest in the United States, began ecological changes after wolves were reintroduced in 1995.
Wolves are a keystone predator that reduces elk populations, enabling willows and aspens to recover.
A recent rebuttal challenges Professor Bill Ripple's findings by alleging flaws in his trophic cascade analysis.
Ripple's team plans to respond.

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Story summary

Yellowstone National Park, the oldest in the United States, began ecological changes after wolves were reintroduced in 1995.
Wolves are a keystone predator that reduces elk populations, enabling willows and aspens to recover.
A recent rebuttal challenges Professor Bill Ripple's findings by alleging flaws in his trophic cascade analysis.
Ripple's team plans to respond.