Potential Germination Success of Exotic and Native Trees Coexisting in Central Spain Riparian Forests

Figure 3

Time to germinate () of Ailanthus altissima and Robinia pseudoacacia seeds from the canopy and soil seed banks from two populations (Jadraque and Alcalá) throughout a year. Uppercase letters represent significant differences in among seeds of different age (i.e., at different moments of the year).

(a)

(b)