Table 3 Nematodes ecological and alpha diversity indices in different tillage practices.

From: Metabarcoding–approach–based profiling reveals dynamic nature of sustainable tillage practices on nematode communities in corn–soybean cropping systems

Index

0–5 cm

5–20 cm

 

CT

MT

NT

CT

MT

NT

Shannon

2.20 ± 0.10a

1.83 ± 0.14a

2.06 ± 0.14a

1.88 ± 0.10a

1.90 ± 0.14a

1.86 ± 0.12a

Richness

22.00 ± 1.35a

22.90 ± 1.91a

23.90 ± 1.41a

20.20 ± 1.26a

21.50 ± 1.33a

20.90 ± 1.51a

Simpson

0.83 ± 0.02a

0.71 ± 0.05a

0.75 ± 0.05a

0.73 ± 0.04a

0.72 ± 0.05a

0.72 ± 0.04a

MI

2.82 ± 0.19a

1.83 ± 0.16b

2.12 ± 0.16b

2.67 ± 0.18a

2.06 ± 0.21a

2.32 ± 0.22a

BI

26.69 ± 5.23a

17.04 ± 3.96a

19.03 ± 3.25a

19.67 ± 2.84a

9.16 ± 2.88b

17.92 ± 2.71ab

EI

30.96 ± 5.79b

68.82 ± 8.14a

67.10 ± 5.73a

53.57 ± 4.37b

79.38 ± 5.90a

61.49 ± 6.07ab

PPI

2.33 ± 0.07b

2.15 ± 0.04c

2.61 ± 0.04a

2.73 ± 0.04a

2.52 ± 0.05b

2.74 ± 0.05a

CI

55.73 ± 6.99a

6.73 ± 2.66c

27.51 ± 6.86b

23.47 ± 7.18a

7.73 ± 2.99b

26.00 ± 6.94a

NCR

0.89 ± 0.03ab

0.96 ± 0.02a

0.80 ± 0.04b

0.86 ± 0.06a

0.91 ± 0.03a

0.81 ± 0.05a

SI

67.55 ± 6.29a

54.01 ± 6.49a

55.64 ± 4.62a

66.63 ± 6.33a

65.61 ± 7.15a

62.85 ± 6.04a

  1. The values are mean ± standard error (n = 4). Same letters are not statistically significant at P < 0.05 according to Tukey–Kramer test. Pairwise comparison of treatment was performed at each sampling depth. MI = Maturity index, BI = basal index, EI = enrichment index, PPI = plant-parasitic index, CI = channel index, NCR = nematode channel ratio, SI = structure index.
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