Figure 1. Stress-induced changes in the biodiversity–ecosystem functioning relationship.

Log₁₀ biovolume for 39 diatom communities spanning five levels of species richness at (a) day 7, (b) 14, (c) 21 and (d) 28 of the experiment for control (grey), low stress (yellow) and high stress (orange) conditions. Regression lines represent the predicted biodiversity–productivity relationship by the linear mixed effects model (Table 1). The grey area corresponds to negative net biovolume production.