Commonality and variability in the structural attributes of moist temperate old-growth forests: A global review

► Old-growth forests showed global commonalities when compared to mature stands. ► Old-growth showed higher amounts of large living trees, aboveground biomass and CWD. ► Stand age correlates to basal area, large living trees and aboveground biomass. ► Geographical, compositional and climatic influences most structural variables. ► There is a lack of studies on temperate forests in Russia, Western and Central Asia.