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. 2020 May 6;8:e9034. doi: 10.7717/peerj.9034

Table 1. Pearson correlations of stressors against downcore analyte data.

Analytes are grouped as determined by cluster analysis (Fig. 3). Coloring applies to positive (red) and negative (blue) relationships and asterisks reflect three levels of P-value.

Group Analyte Ag. Area Forestry Mine stress Population
Ca 0.37 *** −0.25 ** −0.28 *** 0.4 ***
1 CaO 0.32 *** −0.19 ** −0.23 ** 0.36 ***
Mg 0.42 *** −0.31 *** −0.24 ** 0.28 ***
MgO 0.32 *** −0.23 ** −0.17 ** 0.16 *
Cd 0.01 0.09 −0.16 * 0.52 ***
Pb −0.03 0.29 *** −0.16 * 0.37 ***
2a Sn 0.25 ** −0.04 −0.22 ** 0.63 ***
Zn 0.1 −0.05 −0.24 ** 0.55 ***
Sb 0.1 0.05 −0.13 * 0.46 ***
Na −0.01 −0.09 −0.12 0.2 **
Ta −0.03 0.07 0.03 −0.03
Nb −0.1 −0.17 ** 0.04 −0.03
Cu −0.29 *** 0.16 * −0.04 −0.04
Mo −0.06 −0.11 −0.08 0.17 *
Co 0 0 −0.01 −0.01
2 Ni 0.05 −0.04 −0.04 0.16 *
P −0.13 0.03 0.01 −0.09
P2O5 −0.08 0.14 * −0.1 0.06
As −0.14 * 0.01 −0.17 * 0.14 *
Mn −0.11 0.1 −0.1 0.23 **
MnO −0.13 0.1 −0.1 0.21 **
SiO2 0.14 * −0.1 0.17 * −0.17 *
Zr −0.51 *** −0.11 0.42 *** −0.36 ***
Hf −0.43 *** −0.11 0.39 *** −0.33 ***
Sr −0.49 *** 0.15 * −0.15 * −0.22 **
SrO −0.34 *** 0.27 *** −0.18 ** −0.14 *
3 K −0.58 *** 0.63 *** 0.27 *** −0.59 ***
Na2O −0.68 *** 0.46 *** 0.33 *** −0.63 ***
Al −0.5 *** 0.2 ** 0.23 ** −0.45 ***
Fe −0.07 −0.14 * −0.09 −0.05
Si −0.3 *** 0.2 ** 0.08 −0.32 ***
Li 0.15 0.78 *** −0.12 0.04
Ti −0.8 *** 0.54 *** 0.05 −0.58 ***
Cr −0.04 −0.04 −0.19 ** 0.3 ***
K2O 0.4 *** −0.07 −0.11 0.08
4 U 0 −0.21 ** −0.16 * 0.26 **
Rb 0.22 ** −0.32 *** −0.3 *** 0.18 **
Cs 0.25 ** −0.31 *** −0.35 *** 0.32 ***
Fe2O3 −0.44 *** −0.02 0.04 −0.2 **
Ba −0.3 *** 0.19 ** 0.09 −0.12
BaO −0.32 *** 0.19 ** 0.06 −0.12
TiO2 −0.45 *** −0.3 *** 0.25 ** −0.22 **
Er −0.38 *** −0.24 ** 0.18 ** −0.18 **
Tm −0.38 *** −0.3 *** 0.13 * −0.17 *
Yb −0.33 *** −0.28 *** 0.19 ** −0.15 *
Lu −0.35 *** −0.29 *** 0.17 ** −0.16 *
Y −0.39 *** −0.2 ** 0.15 * −0.2 **
Dy −0.4 *** −0.22 ** 0.16 * −0.18 **
5 Tb −0.45 *** −0.26 *** 0.06 −0.19 **
Ho −0.45 *** −0.27 *** 0.11 −0.2 **
Th −0.42 *** 0.1 −0.12 −0.25 **
Gd −0.43 *** −0.16 * 0.09 −0.2 **
Sm −0.41 *** −0.14 * 0.01 −0.19 **
Eu −0.39 *** −0.17 ** 0.04 −0.19 **
La −0.38 *** 0.04 −0.05 −0.18 **
Ce −0.4 *** −0.04 −0.01 −0.16 *
Pr −0.48 *** −0.08 −0.09 −0.23 **
Nd −0.42 ** −0.05 −0.01 −0.21 **
Ga −0.17 * −0.03 −0.1 −0.07
Al2O3 −0.14 * −0.1 −0.06 −0.12
Sc −0.22 ** −0.24 ** 0.01 −0.08
V −0.13 −0.4 *** −0.18 ** 0.09

Notes.

*

P < 0.05

**

P < 0.01

***

Bonferroni correction for P = 0.05