We learned about keystone species and trophic cascades. Disc…
We learned about keystone species and trophic cascades. Discuss keystone species and trophic cascades by describing how the re-introduction of wolves, a keystone species in the Yellowstone Park ecosystem, drove a trophic cascade, starting with elk, that led to the restoration of the Yellowstone National Park ecosystem. In your discussion, describe how the absence of wolves affected elk, that, in turn, affected rivers and streams, and how the re-introduction of wolves rehabilitated rivers and streams that led to the restoration of the Yellowstone National Park ecosystem.
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