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Pocket gophers (Thomomys monticola) often make regeneration of ponderosa pine (Pinus pond4rosa ) difficult in Oregon, because, after logging, the gophers increase in substantial numbers. Efforts to… (More)
Stands of brush and tree species of low commercial value dominate many potentially productive forest lands in western Oregon. Site preparation to reduce competition from such vegetation will improve… (More)
A caged deer mouse (Peromyscus maniculatus) can eat from 250 to 350 Douglas-fir seeds per day. At this rate, two deer mice per acre can consume 1 pound of Douglas-fir seeds or about 40,000 seeds in… (More)