Within the United States, cattle ranchers are restoring the prairies destroyed by overgrazing with the help of the cattle themselves.
Note how the bracken and other understory vegetation has also grown because of the protection from overgrazing provided by the deer fence.
However, overgrazing and unsuitable supplementary feeding were recognized as problems prior to 1992.
The destruction of the grasses on the hillsides by overgrazing in recent years has increased the flooding by temporary streams, and consequently has tended to deepen and increase the gulleys and channels of the mountains and valleys.
