Table 1.

Results from the correlation analysis of tree and soil characteristics of the Bloor Street trees, in Toronto, Ontario, Canada, indicating correlation coefficients, with significant values in bold (analysis performed on subsample, n = 57).

Variable	Correlation coefficient
Variable	Mg	Na	Ca	pH^{^z}	EC	DBH
Ca	0.18	−0.15	n/a	0.49	0.08	0.38
DBH	0.29	−0.45	0.38	0.08	−0.32	n/a
EC	−0.58	0.78	0.08	0.05	n/a	−0.32
Mg	n/a	−0.63	0.18	−0.27	−0.58	0.29
Na	−0.63	n/a	−0.15	0.31	0.78	−0.45
pH^{^z}	−0.27	0.31	0.49	n/a	0.05	0.08

↵^z Coefficients refer to Spearman’s Rho, since the variable is not normally distributed (i.e., Shapiro-Wilk’s and Kolmogorov–Smirnov tests P-value < 0.05)