Fragile Ecosystem
Because the Pinaleños are a sky island mountain range, they are by definition unique. The U.S. Forest Services claims that "prior to about 1870, the Pinaleños maintained healthy, resilient ecosystems that were adapted to naturally occurring fire regimes (primarily frequent, low-intensity wildfires)." They go on to explain that "After European settlement, the natural ecosystem processes were interrupted by passive (overgrazing) and active fire suppression, and harvest of large-diameter trees. The result is that today the forests are composed of overly dense, small-diameter trees and snags with excessive amounts of downed wood. The composition of the mixed-conifer forest between about 8,500 and 10,000 feet (3,000 m) elevation has shifted from fire-adapted to fire-intolerant tree species."
Read more about this topic: Pinaleno Mountains
Famous quotes containing the word fragile:
“The course of my long life hath reached at last
In fragile bark o’er a tempestuous sea
The common harbor, where must rendered be
Account for all the actions of the past.”
—Henry Wadsworth Longfellow (1807–1882)