In most cases, forests are no longer clear-cut. Cutting rotations are ecologically based and managed more carefully. Timbered areas are replanted after trees are removed. Some mature trees are left standing to act as a seed stock for new trees. Vegetation buffers are left along streambanks and roads.
Buffers minimize the effects of logging operations.
These techniques result in healthier forests. They also result in better water quality. The way in which we manage fisheries in Pennsylvania has also changed. There are several criteria that fisheries biologist use. A wild trout fishery must also be able to sustain a naturally reproducing population of wild trout.