| an extended study of heavy metal deposition in galicia (nw spain) based on moss analysis. | this paper describes the first attempt to determine the levels of heavy metal contamination in galicia (nw spain) by analysis of moss species. samples of scleropodium purum and hypnum cupressiforme were collected from 75 sites, in 1995 and 1997, and analysed by atomic absorption spectrophotometry and atomic fluorescence for al, as, co, cr, cu, fe, hg, ni, pb and zn. comparisons were made between the two moss species used and, for those elements present at different concentrations in the two spec ... | 2000 | 10845445 |
| a comparison of indigenous mosses and topsoils for use in monitoring atmospheric heavy metal deposition in galicia (northwest spain). | samples of moss (scleropodium purum or, in its absence, hypnum cupressiforme) and of topsoil (0-5 cm) were collected in the spring of 1995, from 75 sites distributed throughout galicia (northwest spain) in order to compare the potential usefulness of each in evaluating the atmospheric deposition of contaminants. analysis was made of the total content of various metals in the moss and of different soil metal fractions (including total metal content, labile metals and metals bound to organic mater ... | 2001 | 11584641 |
| biomonitoring metal deposition in galicia (nw spain) with mosses: factors affecting bioconcentration. | three factors (canopy effect, lithology and seasonal variations) that may influence the concentrations of metals in terrestrial mosses were studied. the levels of 17 elements were determined in terrestrial mosses (scleropodium purum (hedw.) limpr, and hypnum cupressiforme hedw.) collected from 75 sites in galicia at two sampling times, in 1995 and 1997. in addition, monthly samples of s. purum were collected throughout a period of one year from four sites in the same area, for analysis of levels ... | 2002 | 11838432 |
| heavy metal transfers between trophic compartments in different ecosystems in galicia (northwest spain): essential elements. | in the present study, we determined the concentrations of cu, fe, mn, and zn in soil and several trophic compartments at a total of 16 sampling stations. the trophic compartments studied were primary producers, represented by two species of terrestrial mosses (pseudoescleropodium purum and hypnum cupressiforme) and oak trees (quercus robur or q. pyrenaica); primary consumers, represented by the wood mouse (apodemus sylvaticus) and the yellow necked mouse (a. flavicollis); secondary consumers, re ... | 2008 | 18350242 |