Douglas fir Douglas-fir forest is the primary habitat of the red tree vole ("Arborimus longicaudus") and the spotted owl ("Strix occidentalis"). Home range requirements for breeding pairs of spotted owls are at least 400 ha () of old growth. Red tree voles may also be found in immature forests if Douglas-fir is a significant component. The red vole nests almost exclusively in the foliage of the trees, typically above the ground, and its diet consists chiefly of Douglas-fir needles. A parasitic plant sometimes utilizing "P. menziesii" is Douglas-fir dwarf mistletoe ("Arceuthobium douglasii"). The leaves are also used by the woolly conifer aphid
Douglas Fraser five days later and ratified on September 23 contained restrictions on mandatory overtime, a comprehensive health-and-safety program, significant improvement to the early retirement plan, and a new dental care benefit. A new streamlined arbitration process was also negotiated, which reduced the time for resolving grievances. Fraser was president of the UAW from 1977 to 1983. He was elected president after Woodcock had reached the mandatory retirement age of 65, according to the UAW constitution. He is best known for his role in negotiating a greater voice for the union in corporate governance with Chrysler during the company's 1979 bankruptcy crisis