"In 1995, the gray wolf was reintroduced to Yellowstone National Park after a seventy-year absence. All these years later, we can clearly see the cascading effects this has had on the park's ecosystem. This [book introduces the concept] of trophic cascade, the term used when an important member of an ecosystem goes missing and many other living things are indirectly affected, causing a chain reaction of events. In the case of the reintroduced wolves of Yellowstone, the chain reaction went as far as changing the behavior of waterways and the surrounding geology"-- Provided by publisher.
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