A new scientific review challenges the headline-grabbing claim that Yellowstone’s returning wolves triggered one of the strongest trophic cascades on Earth. Researchers found that the reported 1,500% ...

Yellowstone's natural balance has been restored.

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The commonly held claim that wolves reintroduced into Yellowstone National Park in the mid-1990s spearheaded a "trophic cascade" of ecological restoration, as some studies indicated, is unfounded, ...

In Yellowstone National Park — where gray wolves were reintroduced starting in 1995 — researchers have gone back and forth on whether the restoration of wolves has impacted the ecosystem. The idea is ...

If you want a glowing example of how interwoven ecosystem elements are, take a look at Yellowstone National Park. A recent ...

Purpose: To introduce the idea of indirect effects of predator on prey by changing prey behavior, and of trophic cascades - effects of predators on primary producers; to construct a flow diagram of ...

The return of wolves to Yellowstone National Park long has been credited with replenishing its wetlands and spurring the beneficial rerouting of streams — an ecological boon for the crown jewel of the ...

Across North America, mountain lions, bears, and gray wolves have made a remarkable comeback over the last 50 years. Once nearly exterminated, these animals have been recovering their populations and ...

The theory was exciting and quickly grabbed headlines. Fifteen years after wolves were reintroduced to Yellowstone National Park in 1995, some scientists pointed to the resurgence of aspen growth, an ...

2025 marks 30 years since the federal government reintroduced wolves to the western United States, one of the most successful and controversial wildlife programs in U.S. history. To mark the ...