Figure 1.

(a) Survival of F. sylvatica seedlings in sterilized versus non-sterilized soil as a function of soil source elevation. The solid line represents predictions of the best-fit model (see §2) and diamonds represent the mean of survival rate at each elevation. The confidence envelope (dashed lines) represents the 95% confidence intervals of the predictive posterior distributions of survival probability. (b) Points represent local relative abundance (±s.d.) of F. sylvatica (diamonds) and HOST CLUSTER (crosses) measured at the five sample sites. (c) Predicted probability of F. sylvatica presence estimated with BIOMOD; 95% confidence intervals of the prediction are indicated by dashed lines. Black lines, sterilized; grey lines, non-sterilized.