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. 2023 Mar 30;30(20):58731–58754. doi: 10.1007/s11356-023-26652-8

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Fig. 3 — δ¹³C values (‰) of (a) X. parietina and (b) Physcia spp. colour-coded by ¹³C-enrichment (more positive values) across Manchester; displayed with automated monitoring stations and major road network (A, and B-road and motorway); displayed with SVM interpolated values (same colouring and range) including Manchester’s urban factors