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 5 Model of lower quality recruits count

Predictors	Lower quality recruits count
Predictors	Incidence rate ratios	std. Error	CI	z Statistic	p-value
(Intercept)	108.90	2.06	1.91–6221.84	2.27	0.023
Phosphatase.A	0.00	5.85	0.00–0.01	−2.79	0.005
Spruce.basal.m	0.00	4.07	0.00–0.98	−1.96	0.049
Oak.volume.m	0.56	0.27	0.33–0.95	−2.14	0.032
Random Effects
Residual variance	3.29
Random intercept variance	2.65
Intraclass correlation coefficient	0.45
Number of forest stands	13
Observations	240
Marginal R² / Conditional R²	0.500 / 0.723