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 E. Noble of the 2017 American Institute of Architects Los Angeles Chapter Presidential Honor as educator of the year. Noble completed a Bachelor of Science in Architecture and a Bachelor of Architecture at California State Polytechnic University, Pomona, and both a Master of Architecture and Ph.D. at the University of California at Berkeley. His doctoral dissertation built on the work of Horst Rittel by creating a computer supported Issue-based information system. Noble taught for a few years at UC Berkeley and then joined the faculty of the USC School of Architecture in 1991. Noble has taught at USC since 1991, focusing on