Annual report 2019

The main tree species beech, oak, spruce and silver fir produced no or only few seeds across all altitudinal levels (no or partial mast).

Fig. 1: Map of observed and modelled seed production of Norway spruce (Picea abies) in 2019 (left). Observations of seed production along the altitudinal gradient (right).
Fig. 2: Map of observed and modelled seed production of silver fir (Abies alba) in 2019 (left). Observations of seed production along the altitudinal gradient (right).

Fig. 3: Map of observed and modelled seed production of European beech (Fagus sylvatica) in 2019 (left). Observations of seed production along the altitudinal gradient (right).
Fig. 4: Map of observed and modelled seed production of oaks (Quercus petraea, Quercus robur, Quercus pubescens) in 2019 (left). Observations of seed production along the altitudinal gradient (right).