title: Hylocomium splendens (Hedw.) B.S.G. and Pleurozium schreberi (Brid.) Mitt. as trace element bioindicators: statistical comparison of bioaccumulative properties.
abstract: The principal objective of this study was to compare bioaccumulative properties of two terrestrial moss species Hylocomium splendens and Pleurozium schreberi from the Kielce area (south-central Poland), using various statistical techniques. Forty-six moss samples from 23 sampling sites located within the city limits were analyzed for 33 trace elements. The results indicated that 17 elements (Ba, Ce, Co, Cu, Eu, Fe, Gd, Hg, La, Mo, Nd, Ni, Pb, Pr, Sm, V, Y) dominated in H. splendens, whereas only three elements (Mn, Sr, Zn) occurred in excessive amounts in P. schreberi. No differences in the distribution pattern of Dy, Er, Ho, Sn, Tb, Th and Yb were observed. The element concentration ratio (PI/Hy) varied from 0.50 to 1.19. For 14 elements (Ce, Co, Cu, Fe, Gd, Hg, La, Mo, Nd, Ni, Pb, Sm, Th, V), PI/Hy < 1; for 4 elements (Cd, Mn, Sr, Zn), PI/Hy > 1; for 7 elements (Ba, Dy, Er, Eu, Pr, Y, Yb), PI/Hy = equalled 1. Czekanowski's method showed similarities in rare earth element concentrations for both moss species. The cluster analysis exhibited three significant clusters at D(link)/D(max) x 100 < 50 for both moss species. Strong positive Spearman correlations between both moss species were recorded for the following pairs: Ba-Ba, Co-Co, Er-Er, Eu-Eu, Gd Gd, Mn-Mn, Ni-Ni, Pb-Pb, Pr-Pr, Sm-Sm, Th-Th, Y-Y, and Yb-Yb. Nonparametric tests (Sign test, Wilcoxon tests) showed statistically significant differences only for Cd, Ce, Co, Cu, Hg, Mo, Ni, Pb and Sr. The scanning electron microscope study of H. splendens and P. schreberi revealed a different morphology of these species with no injuries.
authors.affiliation: Geochemistry and the Environment Division, Institute of Chemistry, Jan Kochanowski University, 15G Swietokrzyska St, 25-406 Kielce, Poland. Sabina.Dolegowska@ujk.edu.pl
authors.forename: Sabina
authors.initials: S
authors.lastname: Dołegowska
authors.forename: Zdzisław M
authors.initials: ZM
authors.lastname: Migaszewski
authors.forename: Artur
authors.initials: A
authors.lastname: Michalik
mesh_terms: D019068:Bryopsida / Q000378:metabolism*; D004784:Environmental Monitoring; D008855:Microscopy, Electron, Scanning; D014131:Trace Elements / Q000378:metabolism*
chemical_list: D014131:Trace Elements