Bear Valley STEM

Wolves, Whales and Trophic Cascades

Wolves: How One Species Changed an Entire Ecosystem- VIDEO

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Wolf Reintroduction Changes Ecosystem in YellowstoneWolves are causing a tropic cascade of ecological change, including helping to increase beaver numbers and bring back aspen and vegetation.

What do Whales Have to Do With Climate Change?

Keystone Species and Trophic Cascades

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