Fig. 1
From: How do invasive trees impact shrub layer diversity and productivity in temperate forests?
Scheme for a block of experimental plots in the field. Each of the 21 blocks covers a set of 18 square plots (100 m2), established for natural regeneration assessment (see Dyderski and Jagodziński 2018 for details), marked as grey squares. These plots were covered by stand structure plots (bold rectangles), established to cover homogenous forests. For that reason, a single study plot can cover two or four regeneration plots