It is, therefore, advisable to continue dispensing with conversion factors so far. However, this investigation yielded hints, that the differences in element accumulation in several moss species across German surveys between 19 are in the range of the intra- and inter-specific variance reported. This, like the other studies, is not possible because of its empirical design, since that would require strictly controlled laboratory experiments. The present study does neither verify nor falsify the hypothesis of moss species-specific element accumulations in mosses. So far, the presented investigation is the most comprehensive one in terms of running time, spatial density of the measurement network and method harmonisation. This analysis was based on data derived from several moss species collected across Germany and specimens of only one moss species collected in the monitoring programme performed by the environmental authority of Bavaria. Therefore, the objective of this investigation was to analyse large and long-term datasets from moss surveys for differences in element concentrations in different moss species. Such observations and recommendations have so far been limited to spatially confined areas and relatively few moss samples and were derived from different studies without a common methodology. The evaluations of the present study are intended to examine indications whether the element accumulations are specific to moss species and whether, therefore, conversion factors should be used. The moss surveys additionally performed throughout Bavaria, federal state of Germany. The German moss monitoring as part of the European Moss Survey conducted in 1990, 1995, 2000, 20 at 592, 1026, 1028, 726 and 400 sites across Germany, respectively, and chemically analysed according to harmonised methods throughout Europe and 2. This article presents statistical analyses of elements concentrations in mosses collected in two monitoring programmes: 1.
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