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. 2013 Nov 18;8(11):e80522. doi: 10.1371/journal.pone.0080522

Table 2. Correlation coefficients (r-values) for relationships between physical, chemical and biochemical properties and PLFA biomarkers.

Corg N C/N Csol WHC AS P Cmic BSR qCO2
Total PLFA 0.88** 0.92** -0.059 0.83** 0.80** 0.88** 0.73** 0.80** 0.68** 0.07
Fungi 0.97** 0.94** 0.239 0.71** 0.81** 0.87** 0.59** 0.61** 0.64** 0.12
Bacteria:Fungi -0.74** -0.75** -0.049 -0.69** -0.70** -0.88** -0.52* -0.53* -0.76** -0.35
Bacteria 0.85** 0.91** -0.141 0.85** 0.77** 0.86** 0.82** 0.85** 0.67** 0.04
G- 0.77** 0.84** -0.197 0.84** 0.71** 0.82** 0.74** 0.79** 0.71** 0.12
G+ 0.85** 0.92** -0.152 0.84** 0.77** 0.84** 0.83** 0.85** 0.65** 0.02
G-:G+ 0.20 0.24 -0.207 0.37 0.22 0.36 0.11 0.23 0.51* 0.34
Actinobacteria 0.86** 0.92** -0.135 0.83** 0.77** 0.83** 0.83** 0.85** 0.60** -0.02

Corg: soil organic carbon; N: total Nitrogen; Csol: soluble carbon; WHC: water holding capacity; AS: aggregate stability; Cmic: microbial biomass carbon; BSR: basal soil respiration; P: available phosphorus; G-: Gram-negative bacteria; G+: Gram-positive bacteria; * and ** indicate significant correlation at P<0.05 and P<0.01, respectively.