Appendix B. Variation in community composition (NMDS) due to heavy metals, Ca:Mg, water availability, nutrient availability, and productivity.
FIG. B1. Variation in community composition (NMDS) due to (a) heavy metals, (b) Ca:Mg, (c)water availability, (d) nutrient availability and (e) productivity. To show the independent contribution of each gradient to NMDS, based on our multidimensional analysis, lines show the relationship between a single gradient and the residuals from a multi-gradient model including all effects except the effect shown on the x-axis. |