Biomass accumulation in trees and downed wood at Bartlett Experimental Forest, Hubbard Brook Experimental Forest, the Bowl Natural Research Area, and the White Mountain National Forest, NH, USA

Standing trees and downed wood were inventoried in all of the
chronosequence stands in the White Mountains, New Hampshire to
characterize biomass. Live and standing dead trees were inventoried
in the chronosequence stands in 1994, 2004, 2012, and 2021. Coarse
(≥ 7.6 cm diameter) and fine woody debris (3.0 – 7.6 cm) were
inventoried at the same stands in 2004 and 2020. Twigs (FWD < 3.0
cm) were inventoried in 2004 and 2020. The Bowl and Mt. Pond
old-growth sites were inventoried (standing trees and downed wood)
in 2021.