CCA-ordination of bryophyte species richness and environmental variables for stands (a) and species (b).

<p>CCA-ordination of bryophyte species and environmental factors in grasslands (n = 83). Stands and environmental factors (a) and species (b) of the same ordination are plotted separately to ease readability. Hainich-Dün: open circles; Schorfheide-Chorin: stars. Plots in the dotted circle are situated on either Gleyosols or Histisols. N and K are nutrient concentrations in aboveground vascular plant biomass and Ellenberg indicator values given are gained from vascular plant vegetation. Longer vectors indicate stronger correlations between variables and axes. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0051520#pone-0051520-t001" target="_blank">Table 1</a> for further details on single variables.