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Table 3 Results from correlation and multiple linear regression analyses for microbial communities in biological soil crusts

From: Ammonia-oxidizing archaea and bacteria are structured by geography in biological soil crusts across North American arid lands

  Bivariate correlation (Pearson r coefficients) Regression (p values)
Independent variable Archaeal amoA ( n = 39) Bacterial amoA ( n = 38) Archaeal to bacterial amoA ( n = 33) Archaeal amoA to 16S ( n = 28) Archaeal amoA vs. bacterial amoA
Latitude −0.53** 0.40* −0.70** −0.55** <0.001
Elevation −0.22 0.78** −0.61** −0.25 <0.001
MAP −0.13 0.67** −0.48** −0.12 0.004
MAT 0.39* −0.65** 0.69** 0.40* <0.001
  1. **Correlation is significant at the 0.01 level. *Correlation is significant at the 0.05 level. MAP, mean annual precipitation; MAP, mean annual temperature.