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Results of PC analysis of the trace elements in biodeposits on the surface of stone: I—biofilms with a predominance microscopic fungi and algae; II—biofilms with a predominance lichens; III—vegetative biomass of the moss; IV—primary soil under the moss cover. The main contribution to the statistical model for PC 1 is made by Eu, Sm, Pr, Nd, Ce, Gd, Zn, Rb, Dy, Sn and for PC 2 by Lu, Sr, Y, Pb, Ge, Ag, Cs, Ba, Zr, Ni.
