Fig. 3

The fitted risks (the probability parameter of the binomial distribution) of the occurrence of Gremmeniella abietina damage (33 % of pines showing damage symptoms) on different forest site types A–E (see Fig. 1), predicted by the GLM (calculated for the rainfall during May–September (272 mm), and fitted in different data sets). Uncertainty illustrated by the standard errors (asymmetric scale) is related to the difference between site types. Uncertainty that is common to all site types, that is, related to the intercept (=site type B) and covariate, is not shown here