Fig. 3: Interactions between tree species richness and tree species spatial heterogeneity.
From: Improving forest ecosystem functions by optimizing tree species spatial arrangement
The interactions were tested on A tree biomass, B litterfall and C litter decomposition using a diversity gradient from two species mixture (n = 56) to four (n = 1000) and eight-species mixtures (n = 1000) and an 8 levels gradient of heterogeneity ranging from a block (in red) to a fully random design (gray color gradient). The loess regression lines were added for each heterogeneity level, and gray ribbons highlight the 95% confidence interval around the mean values. Model ANOVA outputs are reported.
