This graph shows the effects of plant species richness on ecosystem processes, e.g.: -effects of plant biodiversity on decomposition -effects of plant biodiversity on pathogen infection -effects of plant biodiversity on herbivory -effects of plant biodiversity on flower visitation (pollination) -effects of plant biodiversity on bioturbation -effects of plant biodiversity on ant activity -effects of plant biodiversity on parasitism and hyperparasitism, -effects of plant biodiversity on biological invasion and -effects of plant biodiversity on soil microbial respiration. The graph comes from the supplementary material of a paper published by Scherber et al. in Nature (http://dx.doi.org/10.1038/nature09492). Biodiversity effects are mostly non-linear, and species richness effects are negative in some cases. For more details, see the Supplementary Material at http://www.nature.com/nature/journal/v468/n7323/extref/nature09492-s1.pdf