Does moder development along a pure beech (Fagus sylvatica L.) chronosequence result from changes in litter production or in decomposition rates?

► Annual litter production did not change significantly along the chronosequence but tended to increase in stands older than 15 years. ► Litter decay rates decreased significantly during the phase of intense growth of trees. ► Litter production was positively correlated with the thickness of the OF (Oi) horizon. ► Litter decay was strongly negatively correlated with maximum thickness of the OH (Oa) horizon, suggesting that soil nutrient availability may not directly affect litter dynamics. ► We did not found significant changes in the main properties of the organo-mineral horizon, suggesting that soil nutrient availability may not directly affect litter dynamics.