Table 1.

Concentrations of metals in soil organic layer and in the ground beetles P. oblongopuncatus (mean ± SD) and calculated pollution indices (PI) for beetles collected along two metal pollution gradients

Transect	Location	Distance from nearest smelter (km)	Metals in soil organic layera			Metals in beetles (number of beetles analyzed in brackets)
			Cd (mg/kg dry wt)	Zn (mg/kg dry wt)	PI	Cd (mg/kg dry wt)	Zn (mg/kg dry wt)
OLK	50°18′ N, 19°29′ E	3.9	39.1	1 763	21.3	1.6 ± 1.11 (24)	107 ± 15 (23)
OLK	50°19′ N, 19°30′ E	5.3	14.7	1 253	10.7	1.6 ± 0.97 (24)	103 ± 10 (23)
OLK	50°19′ N, 19°32′ E	7.9	12.2	755	7.6	1.8 ± 1.10 (24)	104 ± 15 (24)
OLK	50°25′ N, 19°38′ E	19.6	4.03	224	2.4	0.6 ± 0.48 (23)	99 ± 90 (24)
Unpolluted site 2008	50°32′ N, 19°39′ E	31.8	1.48	109	1.0	0.7 ± 0.65 (23)	100 ± 11 (24)
MSL	50°29′ N, 18°57′ E	2.1	52±10.6	2 684±689	20.5	3.7 ± 1.89 (32)	104 ± 16 (32)
MSL	50°31′ N, 18°56′ E	2.6	55±12.1	2 906±726	21.9	3.4 ± 1.41 (38)	106 ± 17 (42)
MSL	50°31′ N, 18°57′ E	3.3	36±10.1	1 886±520	14.3	2.3 ± 1.19 (51)	101 ± 15 (54)
MSL	50°34′ N, 19°58′ E	8.7	4.8±2.3	319±80	2.1	0.9 ± 0.44 (35)	100 ± 15 (36)
Unpolluted site 2010	50°32′ N, 19°39′ E	31.8	2.2±1.8	155±28	1.0	0.4 ± 0.37 (41)	95 ± 14 (43)

Pollution indices were calculated according to the equation \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\text{PI}} = \frac{{{\text{Z}}{{\text{n}}_i}/{\text{Z}}{{\text{n}}_{\text{U}}} + {\text{C}}{{\text{d}}_i}/{\text{C}}{{\text{d}}_{\text{U}}}}}{2} $$\end{document}, where index i denotes site number, index_U unpolluted site, and metal symbols stand for their concentrations in soil organic layer (in milligrams per kilogram dry weight)

OLK Olkusz, MSL Miasteczko Śląskie

^aData for OLK gradient from Stefanowicz et al. (2008), no SD indicated as chemical analysis were performed on mixed samples