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How Wolves Change Rivers
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When wolves were reintroduced to Yellowstone National Park in the United States ...

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? 
Students will watch this video as an example for how populations can change an ecosystem.

Subject:
Environmental Literacy and Sustainability
Life Science
Biology
Material Type:
Diagram/Illustration
Provider:
Films for Action
Date Added:
12/02/2015