No increased drought-related mortality after thinning: a meta-analysis

Table 5 Subgroup analysis and meta-regressions statistics of pre-drought and IPD

				Pre-drought inventory period						Drought inventory period
Covariate	Var type	Coef type	N	Coef	CI.lb	CI.ub	p	SL	R²	Coef	CI.lb	CI.ub	p	SL	R²
Koeppen-ClimateZone	cl.	Warm/arid	2	0.16	0.03	0.71	0.016	*	0	0.08	0.01	0.54	0.01	**	11.3
Koeppen-ClimateZone	cl.	Temperate	3	0.64	0.13	3.18	0.582		0	1.2	0.27	5.75	0.783		11.3
Koeppen-ClimateZone	cl.	Continental	27	0.45	0.28	0.73	0.001	**	0	0.44	0.26	0.74	0.002	**	11.3
Taxonomic-Class	cl.	Mixed	1	0.79	0.04	16.40	0.878		0	1.82	0.14	23.07	0.644		0
Taxonomic-Class	cl.	Conifers	22	0.62	0.24	1.61	0.325		0	0.36	0.12	1.06	0.064	.	0
Taxonomic-Class	cl.	Broad leaves	9	0.37	0.22	0.62	0	***	0	0.42	0.23	0.76	0.004	**	0
Genus	cl.	Fagus	6	0.77	0.20	2.93	0.704		0	0.69	0.15	3.14	0.63		0
Genus	cl.	Larix	1	0.85	0.02	29.6	0.929		0	0.85	0.02	37.62	0.931		0
Genus	cl.	Picea	11	0.50	0.24	1.04	0.063	.	0	0.28	0.12	0.67	0.005	**	0
Genus	cl.	Pinus	10	0.27	0.13	0.56	0	***	0	0.58	0.25	1.34	0.203		0
Genus	cl.	Populus	1	0.79	0.04	16.35	0.878		0	1.82	0.14	24.08	0.649		0
Genus	cl.	Quercus	3	0.49	0.13	1.92	0.308		0	0.17	0.03	0.85	0.031	*	0
Latitude	co.	Interc	32	1.54	0.10	22.98	0.755		0	1.78	0.07	46.92	0.731		0
Latitude	co.	Coef		0.98	0.93	1.03	0.344		0	0.97	0.92	1.04	0.386		0
Stand-Density	co.	Interc	32	0.21	0.06	0.69	0.01	*	4.1	0.18	0.05	0.66	0.01	*	0
Stand-Density	co.	Coef		3.70	0.47	28.81	0.212		4.1	4.48	0.57	35.58	0.156		0
TreeAge	co.	Interc	32	0.52	0.15	1.80	0.302		0	0.17	0.04	0.78	0.022	*	0
TreeAge	co.	Coef		1.00	0.98	1.01	0.731		0	1.01	0.99	1.03	0.206		0
Timesince-lastThin	co.	Interc	32	0.48	0.23	0.981	0.044	*	0	0.29	0.13	0.65	0.002	**	3.0
Timesince-lastThin	co.	Coef		0.99	0.94	1.036	0.608		0	1.02	0.98	1.06	0.312		3.0

Var type Variable type, cl. class, co. continuous, Coef type coefficient type, interc. intercept, coef coefficient, N number of experiments within subgroup/regression, CI.lb confidence interval lower boundary, CI.ub confidence interval upper boundary, p p -value, SL significance level, R² amount of heterogeneity that can be explain by covariates
Significant levels used were p < 0.05 = *, p < 0.01 = **, p < 0.001 = ***

ISSN: 1297-966X