Sound and rotting logs and stumps that provide habitat for plants, animals, and insects, and a source of nutrients for soil development.
Dead pieces of wood including downed, dead tree and shrub boles, large limbs, and other woody pieces that are severed from their original source of growth or are leaning more than 45 degrees from vertical. For decay classes 1-4, CWD transect diameter must be 3.0 inches (7.6cm), for decay class 5 the transect diameter must be 5.0 inches (12.7 cm).