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Table 2 Results of stepwise linear regression for each bird guild

From: Bird guild loss and its determinants on subtropical land-bridge islands, China

Guilds Best fitted model R 2 F p
All guilds SR = 32.44 + 0.14 × Area - 109.48 × PAR 0.65 38.38 <0.001
Migration strategy     
  Residents R = 24.63 + 0.11 × Area - (- 86.53) × PAR 0.65 38.81 <0.001
  Migrants M = 6.31 + 0.05 × Area 0.32 20.00 <0.001
Dietary guild     
  Insectivores In = 13.85 + 0.09 × Area - 37.71 × PAR 0.67 41.57 <0.001
  Omnivores Om = 14.28 + 0.05 × Area - 58.43 × PAR 0.49 19.87 <0.001
Foraging guild     
  Canopy Ca = 14.51 + 0.05 × Area - 54.09 × PAR 0.62 33.63 <0.001
  Understory Un = 10.44 + 0.05 × Area - 36.33 × PAR 0.47 18.93 <0.001
  1. SR means richness of all birds, R residents, M migrants, In insectivores, Om omnivores, Ca canopy, and Un understory.