Basic parameters of the sampled Q. robur trees and their habitat (Dnipropetrovsk Region near village of Bashmachka).

Table 1: Basic parameters of the sampled Q. robur trees and their habitat (Dnipropetrovsk Region near village of Bashmachka).

Oak tree number	Approximate oak age, years	Light intensity on sampling day, μmol·m^-2·s^-1	Oak habitat	Shadiness at the level of lower oak branches, %
No. 1	~130-150	900^*	Single trees on the forest edge dese forest	40.0
No. 2	~50	50	Dense forest	96.6
No. 3	~80	1500	Single trees in the upper reaches of a gully	0.0
No. 4	~80	1500	Single trees in the upper part of a gully	0.0

^*Light intensity was measured on the upper surface of leaf blades from the lowest tier of branches. These leaves were used for cytological studies.