However, forests do experience periods of stress and decline. Stress is put on the forest by such things as fire, drought, storms, late spring frosts, diseases and insects, coupled with the advanced age of some forest types. These play a significant role in shaping Michigan's forests. Some other forest species, existing at the extreme north or south part of their natural range, find themselves stressed at times by extreme weather events. Recognizing, understanding and working with these and other limiting natural processes and events is an integral part of forest resource management.
Wildfire is a major concern in a forested landscape.
Spring and fall are usually the periods of highest hazard due to the cured leaves, grass, and other vegetation that have accumulated from the previous growing season. Summer droughts can also be a time when serious wildfires may threaten the forest resource and interspersed homes. Diverse and increasing recreational use in the forest have increased the risk of wildfire. The use of prescribed burning as a silvicultural treatment is a valuable tool in the management and regeneration of several tree species, particularly jack and red pine. Wildlife habitat may also be enhanced by the use of prescribed burning.