FIGURE 2.
Spatial distribution of selected variables. Kriged maps were constructed for gene abundances of (A) nxrA gene (NB), (B) 16S rRNA genes (NS), (C) amoA gene (AOA), (D) amoA gene (AOB), and for soil ammonium content (E) at different sampling dates (1–6). Gene abundances are given in gene copy numbers per g soil (dry weight), ammonium concentration is given in μg N per g soil (dry weight). AOA, ammonia-oxidizing archaea; AOB, ammonia-oxidizing bacteria; NB, Nitrobacter-like nitrite-oxidizing bacteria; NS, Nitrospira-like nitrite-oxidizing bacteria.