Table 3.

Mean abundances (±standard deviation, as %) of nitrifying prokaryotic taxa interrogated by oligotyping.

Site	Nitrosospira	Nitrospira	Nitrobacter	Nitrososphaera
Becker	0.61 ± 0.27 (0.20 - 1.27)	0.39 ± 0.17 (0.13 - 0.67)	0.10 ± 0.04 (0.05 - 0.25)	1.48 ± 0.51 (0.67 - 2.89)
Crookston	0.21 ± 0.14 (0.07 - 0.74)	0.48 ± 0.09 (0.27 - 0.66)	0.14 ± 0.03 (0.07 - 0.21)	12.18 ± 1.16 (10.05 - 14.49)
Lamberton	0.50 ± 0.26 (0.25 - 1.42)	0.32 ± 0.06 (0.21 - 0.48)	0.16 ± 0.03 (0.11 - 0.22)	3.97 ± 0.94 (1.68 - 5.82)
Waseca	0.67 ± 0.26 (0.32 - 1.34)	0.32 ± 0.07 (0.19 - 0.43)	0.07 ± 0.02 (0.04 - 0.11)	4.86 ± 1.64 (1.83 - 7.17)
Rosemount (tilled)	0.58 ± 0.25 (0.21 - 1.28)	0.43 ± 0.11 (0.20 - 0.57)	0.09 ± 0.03 (0.04 - 0.15)	6.85 ± 1.47 (3.29 - 9.74)
Rosemount (non-tilled)	0.41 ± 0.09 (0.26 - 0.63)	0.29 ± 0.07 (0.14 - 0.46)	0.14 ± 0.03 (0.09 - 0.20)	4.87 ± 1.11 (2.45 - 8.51)
St. Paul (corn)	0.36 ± 0.11 (0.16 - 0.58)	0.42 ± 0.10 (0.20 - 0.56)	0.02 ± 0.01 (0.00 - 0.05)	5.13 ± 1.45 (2.19 - 7.08)
St. Paul (soybean)	0.56 ± 0.25 (0.36 - 1.55)	0.50 ± 0.07 (0.35 - 0.64)	0.32 ± 0.42 (0.07 - 1.26)	5.41 ± 0.74 (3.05 - 6.41)

Range is shown in parentheses. All samples from each site are summarized, regardless of time point or treatment.