Table 1.

Correlation statistics (Pearson's r and Spearman ρ) used to investigate relationships between urban influencing factors and lichen-derived CNS contents (wt%) and stable-isotope-ratio signatures (δ¹³C, δ¹⁵N and δ³⁴S). Underlined values represent Spearman ρ, all other values are presented as Pearson’s r, significant values are presented in bold (significance level is indicated by asterisk; *significant at the level p < 0.05 and **significant at the level p < 0.01); MR = distance to major road, RdCl = road class, TC = traffic counts, BH = surrounding building height, GS = distance to greenspace

	MR	RdCl	TC	BH	GS
X. parietina
wt% C	0.11	0.01	-0.12	-0.17	-0.07
wt% N	-0.21*	0.19	0.07	0.30**	0.17
wt% S	-0.13	0.12	0.11	0.30**	0.12
δ13C	0.22*	-0.26*	-0.07	-0.20	-0.21*
δ15N	-0.28**	-0.34**	0.22*	0.25*	0.20
δ34S	0.15	-0.01	-0.14	-0.21*	-0.08
Physcia spp.
C wt%	-0.26	0.00	-0.11	-0.02	0.00
N wt%	-0.14	0.07	0.24*	0.16	0.16
S wt%	-0.19	0.07	0.25*	0.16	0.16
δ13C	0.20	-0.11	-0.13	-0.08	-0.15
δ15N	-0.26*	0.21	-0.26*	0.09	0.27*
δ34S	0.22*	0.04	-0.29**	-0.21	-0.10