Douglas-fir forests in the Cascade Mountains of Oregon and Washington: is the abundance of small mammals related to stand age and moisture?

Red tree voles (Arborimus longicaudus)were the only small mammal strongly associatedwith old-growth forests, whereas vagrant shrews(Sorex vograns) were most abundant in youngforests. Pacific marsh shrews (S. bendini) were mostabundant in wet old-growth forests, but abundanceof this species in young (wet) forests needs furtherstudy. Clearcuts had a mammalian fauna distinctfrom young forest stands. Abundance of severalspecies was correlated to habitat features unique tonaturally regenerated forests, indicating an urgentneed to study the long-term effects of forestmanagement on nongame wildlife.