Fig. 1

Scatterplots of the loadings (above) and the scores (below) obtained by PCA applied on plots. In parentheses are shown the percentage of variability accounted by the two first components. “total” denotes all ectomycorrhizal mushrooms yield, “edible” denotes edible mushrooms yield, “marketed” denotes marketed mushrooms yield, “altitude” denotes the plot altitude, “latitude” denotes the plot latitude, “longitud” is denotes the plot longitude, “slope” denotes the main slope of the plot, “aspect” denotes the plot aspect, “slopeasp” is a synthetic variable created by multiplying slope by aspect, “P_annual” is the annual accumulated precipitation, “P_ag” is the accumulated precipitation of August, “P_set” is the accumulated precipitation of September, “P_oct” is the accumulated precipitation of October, “P_nov” is the accumulated precipitation of November, “P_as” is the accumulated precipitation of August and September, “P_aso” is the accumulated precipitation of August, September and October, “T_annual” is the annual mean temperature, “T_ag” is the mean temperature of August, “Tm_set” is the mean temperature of September, “T_oct” is the mean temperature of October, “T_nov” is the mean temperature of November, 21 is Pinus sylvestris and 26 is Pinus pinaster, Cat is Catalonia region, Pal is Palencia province, Sor is Soria province and Val is Valladolid province