Elevational patterns of bird species richness on the eastern slope of Mt. Gongga, Sichuan Province, China

Table 4 Multiple regression of interpolated species richness against four selected factors (LA, STR, IB, and MDE) for the three species categories

Species categories	LA	STR	IB	MDE	r ²	r ²_adj	p
Total species	1.457	− 25.25	1.507	0.583	0.969	0.928	0.013
Large-ranged species	− 0.173	− 7.704	2.449	0.737	0.957	0.899	0.022
Small-ranged species	1.554	− 18.24	− 1.205	0.379	0.955	0.896	0.023

r ²_adj is the adjusted r² value for multiple regressions
Negative relationships are indicated by “− ”
LA land area, STR seasonal temperature range, IB invertebrate biomass, MDE the mid-domain effect
Numbers in italics indicate significant r² values (p < 0.05)

ISSN: 2053-7166