TABLE 1

BEST analysis identifying combinations of sample variables best explaining variance in soil microbiome phylogenetic compositiona

Environmental variable(s) (no. of variables)Spearman’s
coefficient (rs)
E, EC, AvgSoilRH, HighSoilRH, HighSoilT (5)0.776
E, EC, AvgSoilRH, HighSoilRH, PercSoilRH100, HighSoilT (6)0.775
E, EC, HighSoilRH, HighSoilT (4)0.772
E, EC, AvgSoilRH, HighSoilRH, PercSoilRH100, HighSoilTemp, LowSoilT (7)0.770
EC, HighSoilRH, AvgSoilT (3)0.764
E, EC, AvgSoilRH, HighSoilRH, PercSoilRH100, AvgSoilT, HighSoilT, LowSoilT (8)0.760
E, pH, EC, AvgSoilRH, HighSoilRH, PercSoilRH100, AvgSoilTemp, HighSoilTemp, LowSoilTemp (9)0.744
E, EC (2)0.728
E, pH, EC, AvgSoilRH, HighSoilRH, LowSoilRH, PercSoilRH100, AvgSoilT, HighSoilT, LowSoilT (10)0.726
E, pH, SOC, EC, AvgSoilRH, HighSoilRH, LowSoilRH, PercSoilRH100, AvgSoilT, HighSoilT, LowSoilT (11)0.712
E, pH, SOC, EC, AvgSoilRH, HighSoilRH, LowSoilRH, PercSoilRH100, AvgSoilT, HighSoilT, LowSoilT, % vegetation cover (12)0.687
HighSoilRH (1)0.663
  • a E, elevation; EC, electrical conductivity; AvgSoilRH, average soil relative humidity; HighSoilRH, high soil relative humidity; HighSoilT, high soil temperature; PercSoilRH100, percentage of RH values at each site that represented 100% RH; LowSoilT, low soil temperature; AvgSoilT, average soil temperature; LowSoilRH, low soil relative humidity; SOC, soil organic carbon. All high and low values are averaged over 7 days.