This painted map of the Greater Yellowstone Ecosystem%2C made by Heinrich Berann%2C was commissioned by the National Park Service in the 1960s. At the time%2C the concept of the ecosystem applied to the habitat needed to support a grizzly bear population. Since then%2C as scientific knowledge has expanded%2C understanding of Greater Yellowstone has also grown exponentially.
This painted map of the Greater Yellowstone Ecosystem%2C made by Heinrich Berann%2C was commissioned by the National Park Service in the 1960s. At the time%2C the concept of the ecosystem applied to the habitat needed to support a grizzly bear population. Since then%2C as scientific knowledge has expanded%2C understanding of Greater Yellowstone has also grown exponentially.