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Table 3 Relationships of body mass or wing length with each environmental variable

From: Bergmann’s rule and Allen’s rule in two passerine birds in China

Species

Trait

Sex (n)

Parameter

Latitude

Elevation

bio1

bio4

bio5

bio6

bio7

bio10

bio11

bio12

bio15

bio18

bio19

Pica serica

Body mass

Male (80)

p

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

R 2

             

Female (81)

p

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

R 2

             

Wing length

Male (82)

p

ns

0.030

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

R 2

 

0.056

           

Female (83)

p

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

R 2

             

Parus minor

Body mass

Male (269)

p

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

R 2

             

Female (133)

p

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

R 2

             

Wing length

Male (266)

p

< 0.001

0.0108

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

R 2

0.389

0.057

0.325

0.264

0.179

0.382

0.286

0.213

0.365

0.385

0.245

0.123

0.260

Female (131)

p

< 0.001

ns

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

0.021

< 0.001

R 2

0.441

 

0.343

0.254

0.243

0.365

0.236

0.252

0.357

0.356

0.374

0.072

0.309

  1. ns no significant, bio1 annual mean temperature, bio4 temperature seasonality, bio5 maximum temperature of warmest month, bio6 minimum temperature of coldest month, bio7 temperature annual range, bio10 mean temperature of warmest quarter, bio11 mean temperature of coldest quarter, bio12 annual precipitation, bio15 precipitation seasonality, bio18 precipitation of warmest quarter, bio19 precipitation of coldest quarter