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Table 2 Spearman rank correlations between proportions of tree species in the plot, biodiversity, stand age, two habitat properties: soil fertility and moisture, and pyrogenic activity recorded as number of fires and burnt area

From: Tree diversity patterns along the latitudinal gradient in the northwestern Russia

  Pinus Picea Betula Broadleaf Biodiversity Age Fertility Moisture
Pinus 1 −0.41 −0.61 −0.20 −0.43 0.23 −0.82 0.02
Picea −0.41 1 0.09 0.02 0.58 0.22 0.24 −0.16
Betula −0.61 0.09 1 0.03 0.45 −0.26 0.46 0.01
Broadleaf −0.20 0.02 0.03 1 0.2 0.01 0.22 0.03
Biodiversity −0.43 0.58 0.45 0.2 1 0.02 0.31 −0.12
Age 0.23 0.22 −0.26 0.01 0.02 1 −0.26 0.01
Fertility −0.82 0.24 0.46 0.22 0.31 −0.26 1 0
Moisture 0.02 −0.16 0.01 0.03 −0.12 0.01 0 1
Number of fires −0.18 −0.11 0.03 0.25 0.03 −0.11 0.28 0.01
Burnt area −0.16 −0.09 0.03 0.2 0.03 −0.09 0.24 0.01
  1. Correlations significant with p-value <0.05 are highlighted with bold