Fire intervals in Douglas-fir forests in Wyoming average 50-100 years.
The waterways are generally surrounded by meadow habitat and Douglas-fir forests.
Response of birds to thinning young Douglas-fir forests.
In west-central Oregon, an old-growth Douglas-fir forest was clearcut and monitored through 10 years of succession.
Although western tanagers occurred at higher densities in young Douglas-fir forest in Oregon, the stands were 40 to 72 years old.
It is sporadic or scattered in early-seral communities and open-canopy Douglas-fir forests on watersheds.
Tanoak and madronetrees now dominate what had once been old-growth Douglas-fir forest.
The park provides the only highway-accessible protected old-growth Douglas-fir forest in British Columbia.
This leads to the fact that the eastern slopes contain only oak, pine, shrub, woodland, and sparse Douglas-fir forest.
Before settlers arrived, the land that became known as Forest Park was covered by a Douglas-fir forest.