Table 4.

Log–log relationships between SVS and BD for the studied samples grouped according to their climatic context (A) and to their climatic and vegetation characteristics (B).

	N	R2	P-value	Slope (95% CIs)	Common slope	Intercept (95% CIs)	Common elevation
A. Bioclimate
Subhumid/humid	52	0.28	<0.001	1.186 (0.91–1.53)	0.0002	2.215 (2.14–2.28)	0.191
Dry subhumid	74	0.52	<0.001	0.760 (0.63–0.90)		2.253 (2.18–2.32)
Semiarid	120	0.46	<0.001	0.652 (0.57–0.73)		2.255 (2.19–2.32)
Pooled	246	0.44	<0.0001	0.758 (0.68–0.83)		2.241 (2.17–2.30)
B. Bioclimate and vegetation characteristics
Cavc1	28	0.19	0.01	1.205 (0.83–1.73)	0.000009	2.180 (2.09–2.26)	0.0005
Cavc2	24	0.45	<0.01	1.160 (0.83–1.61)		2.254 (2.17–2.33)
Cavc3	29	0.44	<0.01	0.85 (0.61–1.18)		2.276 (2.20–2.35)
Cavc4	45	0.60	<0.01	0.74 (0.61–0.91)		2.238 (2.16–2.30)
Cavc5	26	0.57	<0.01	0.74 (0.56–0.98)		2.276 (2.20–2.34)
Cavc6	40	0.60	<0.01	0.51 (0.42–0.61)		2.306 (2.23–2.37)
Cavc7	54	0.45	<0.01	0.70 (0.57–0.85)		2.206 (2.13–2.28)
Pooled	246	0.44	<0.0001	0.758 (0.68–0.83)		2.241 (2.17–2.30)

Slopes, intercepts, and 95% CIs are given.

The bold values are significant at p <0.05. The abbreviations of Cavc classes are described in “Materials and methods” section.