Table 6 Akaike statistics for model including the species richness and the species abundance.

From: Soil mite communities (Acari: Mesostigmata, Oribatida) as bioindicators for environmental conditions from polluted soils

Model

Covariates

LL

K

AICc

ΔAICc

wi

Species richness

1

Environmental factors and heavy metals

−142.79

15

315.59

7.51

0.02

2

Environmental factors

−148.39

9

314.79

6.71

0.03

3

Heavy metals

−145.04

9

308.08

0.00

0.81

4

Pollution degree

−150.75

5

311.50

3.42

0.15

Abundance

1

Environmental factors and heavy metals

−371.7

15

773.43

7.12

0.03

2

Environmental factors

−392.46

9

802.92

36.60

0.00

3

Heavy metals

−374.16

9

766.32

0.00

0.97

4

Pollution degree

−392.88

5

795.77

29.45

0.00

  1. AIC (Akaike’s Information Criterion) differences (ΔAICc) and Akaike weights (wi) were used to rank models relative to the best model (minimum AIC). K – number of parameters; LL – log likelihood.