Figure 3.

Relative importance of predictors for hyphal ³³P transfer, measured as ³³P recovery in plant shoots based on a multi-model inference analysis, in grassland (a, n=58) versus cropland soils (b, n=146). Note that the crop management predictors were used only in the cropland model. Predictors were ordered according to their total importance (i.e., sum of both land use types). Negative and positive correlations are shown in red and blue, respectively. Asterisks indicate a significant correlation at p<0.001 (***), p<0.01 (**) and p<0.05 (*) based on the averaged model coefficients. Model coefficients, standard errors, z-values and exact p-values are reported in Supplementary Tables 6 a and 7 a.