Effects of stand features and soil enzyme activity on spontaneous pedunculate oak regeneration in Scots pine dominated stands – implication for forest management

Forest Ecosystems

Table 2 Model of saplings count

Predictors	Saplings count
Predictors	Incidence rate ratios	std. Error	CI	z Statistic	p-value
(Intercept)	0.27	1.32	0.02–3.63	−0.99	0.325
Litter	0.98	0.01	0.96–0.99	−3.26	0.001
Oak.basal.m	0.01	1.13	0.00–0.08	−4.16	< 0.001
Hornbeam.basal.m	0.00	3.93	0.00–0.02	−2.91	0.004
Spruce.basal.m	0.08	0.70	0.02–0.31	−3.64	< 0.001
Phosphatase.O	2.30	0.31	1.25–4.23	2.68	0.007
Random Effects
Residual variance	0.52
Random intercept variance	0.17
Intraclass correlation coefficient	0.25
Number of forest stands	13
Observations	240
Marginal R² / Conditional R²	0.494 / 0.619