The probability of a tree stem to break from an ice storm, if a random species was picked. The data results as random plot effects from a random effects model including taxon (species) and plot as random factors. Thus, breakage probability is standardized for species, as if a "new" random species was chosen. See the attached graphic for a plot that shows standardized breakage probability over the percentage of broken stems. The latter is biased by the species composition of the plot.

The underlying data combine both living and dead trees (dataset "Living or killed trees after the 2008 ice storm", http://china.befdata.biow.uni-leipzig.de/datasets/239).

Comparative Study Plots, Gutianshan National Reserve 29°08'-29°17'N 118°02'-118°11'E

tree species

The random model was calculated with R: lmer_random_ml <- lmer(mort_rank_broken ~ 1 + (1|plot) + (1|family/species), data = resid_mort, REML = F). This represents a random effects model. We extracted random effects like this: ranef(lmer_random_ml)$plot. We excluded all individuals without at least a genus attribute. We further excluded individuals belonging to plant families with less than 5 individuals in the whole dataset. Thus, individuals from rare families are excluded. --- The resulting species standardized breakage probability for plots can be used for further plot based inspections of multifuncionality.