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 Grant in 2011 for research related to the Samuel Freeman House, a residence designed in 1924 by Frank Lloyd Wright. Together, Noble and Kensek have received several awards for their innovative "NotLY: Not Licensed Yet" support system for individuals preparing for the Architect Registration Examination. In addition to completing several buildings as an architect, Noble is a widely recognized leader in championing and mentoring emerging architecture professionals. Noble founded the Ph.D. program at USC Architecture, and he has published articles and organized symposia on doctoral education in architecture. Noble completed a Ph.D. in the Design Theories and Methods (DTM) group