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Table 4 Contribution of the fixed effects and random tree effects to total variation in porosity coefficient for the five models, each one with the correspondent coefficient of determination (R2Model)

From: Variation of cork porosity along the stem in harvested cork oak (Quercus suber L.) trees

Model

R2 (Model)

Fixed effects

Tree random effects

Height (δ2h2Tot)

Area (δ2Amax2Tot)

Diameter (δ2Dh2Tot)

sizeintercept2Tree Dbh)/δ2Tot)

sizeslope2TreeDbh·hHij)/δ2Tot)

porosityintercept2TreeCPbh2Tot)

porosityslope2Tree CPbh·hHij2Tot)

M0

0.53

5.75

  

47.58

   

M1

0.56

4.63

  

51.26

1.40

  

M2

0.58

6.02

18.65

 

32.90

   

M3

0.53

5.92

    

46.88

 

M4

0.57

4.64

    

51.99

0.39

M5

0.53

5.11

 

0.08

  

47.64