Figure 7.21

Disturbance and ecological succession. (A) In 1988, numerous fires burned 793,880 acres of Yellowstone National Park. This photo shows an area just after it was burned. (B) Twenty years later, lodgepole pine (Pinus contorta) is returning to these burned areas.
(A. National Park Service, Yellowstone National Park; B. © Katie LaSalle-Lowery)