Table 3 Best models classified according to an AICc-based selection (with the “dredge” R-function) to explain Melolontha hippocastani egg-cluster density. Chi² and P values result from a type II ANOVA

1

0

Log(Canopy openness)

0.39 ± 0.08

21.41

3.7e − 05 ***

Proportion of oak BA

0.28 ± 0.09

10.72

0.0011 **

2

+1.10

Log(Canopy openness)

0.41 ± 0.08

23.48

1.26e − 06 ***

Proportion of oak BA

0.24 ± 0.09

6.80

0.009 **

Proportion of Scots pine BA

−0.1 ± 0.09

1.19

0.28 ^ns

3

+1.50

Log(Canopy openness)

0.41 ± 0.08

23.08

1.56e − 06 ***

Proportion of oak BA

0.31 ± 0.09

11.22

0.0009 ***

Proportion of common beech BA

0.09 ± 0.1

0.78

0.38 ^ns

4

+1.95

Log(Canopy openness)

0.39 ± 0.09

20.24

6.8e − 06 ***

Proportion of oak BA

0.27 ± 0.09

9.4

0.002 **

Shannon diversity index

0.05 ± 0.09

0.34

0.56 ^ns

5

+2.21

Log(Canopy openness)

0.40 ± 0.09

19.48

1.02e − 05 ***

Proportion of oak BA

0.28 ± 0.09

10.83

0.00099 ***

Total BA

0.03 ± 0.09

0.08

0.78 ^ns