Fig. 2From: Long-term nitrogen deposition enhances microbial capacities in soil carbon stabilization but reduces network complexityChanges in C cycling gene abundances. The percent change in the relative abundance of C degradation genes by N deposition is calculated as 100*((mean value in N deposited samples/mean value in control samples) – 1). Mean values and standard deviations are presented. Asterisks indicate significant differences. *P < 0.050; **P < 0.010Back to article page