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

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

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