The Cost of Ecosystem Change: The Sierra Nevada Bighorn Sheep

6/26/2017; 7 minutes

We think of the sagebrush steppe as a symbol of the American west, but until only 250 years ago, this was not the case. UC Davis anthropologist Robert Bettinger sheds light on the cascade of large-scale ecosystem changes brought on by humans in California that threatens the last remaining Sierra Nevada Bighorn Sheep. (#32534)

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