Figure 2

Inorganic N contents (A: NH4+; B: NO3−) found in the native forest (NF), old Eucalyptus (OE), and young Eucalyptus (YE) areas at times 1 (March), 2 (June), 3 (September), and 4 (December). Values represent means, and SEM is given as vertical error bars. Statistical differences are expressed as different upper-case letters for the time factor and as different lower-case letters for the treatment factor (two-way ANOVA followed by Tukey’s test; p < 0.05).