Figure 2. Maximal release efficiency (V max) and its standard deviation for dissolved organic carbon (DOC) (a), total dissolved nitrogen (TDN) (b), and total dissolved phosphorus (TDP) (c) estimated from fitting the Michaelis−Menten equation (solid circles and lines) and from the observed maximal release (Max-VE ) during the 28-day leaching experiment (hollow circles and dotted lines). Red circles denote broadleaf and aqua blue circles denote coniferous leaf litter. Significant differences ofV max estimated from the Michaelis−Menten equation fitting are labeled with different letters.