Fig. 3
Simulation of sapling regeneration densities along sapling height gradients of spruce (a), fir (b) and beech (c) in mixed uneven-aged mountain forests. For each species, colored lines represent the sapling density changes with different values of the climate or soil variables selected by the models (PET mean monthly potential evapotranspiration (mm), Precannual mean of monthly precipitation (mm), SWC annual mean of monthly soil water content (mm)). Values of the variables correspond to first quantile, median and last quantile of the observed values. Warning: Scales differ on the y-axis