Fig. 3 shows the trend of SMB and the quotient p/rCO2with timeduring degradation of glucose by the microorganisms contained inYS (Fig. 3A and C) and NYS (Fig. 3B and D). Values of both soilsSMB at the different stages of storage at the start of the experi-ment are not significantly different among them and the averagevalue is SMB = 386 ± 49 g g−1. However, YS increased its SMB aftermicrobial growth with glucose by X = 292 ± 175 g g−1whereasNYS increased by X = 396 ± 117 g g−1(see Table 2). Somethingvery interesting is that SMB for the newly recollected soils in 2012increased by X = 778 ± 83 g g−1by the time of the first peak forNYS and the only peak for YS (see Fig. 2). The value of SMB for NYS0