Table 2 Significance tests of the effects of CO2 and depths on the overall microbial community structure with three different statistical approaches

From: Elevated CO2 shifts the functional structure and metabolic potentials of soil microbial communities in a C4 agroecosystem

  

  aCO2 vs. eCO2

  0–5 cm vs. 5–15 cm

  

0–5 cm

5–15 cm

aCO2

eCO2

Adonisa

F

0.108

0.228

0.118

0.085

 

P

0.008

0.001

0.007

0.032

ANOSIMb

R

0.210

0.424

0.115

0.055

 

P

0.004

0.001

0.014

0.134

MRPPc

δ

0.514

0.453

0.483

0.484

 

P

0.005

< 0.001

0.006

0.022

  1. aNon-parametric permutational multivariate analysis of variance (PERMANOVA) with the adonis function;
  2. bAnalysis of similarities ANOSIM;
  3. cNon-parametric procedure that does not depend on assumptions such as normally distributed data or homogeneous variances, but rather depends on the internal variability of the data.
Back to article page