Table 1 Results of the best additive models explaining variation in total and detritivore-mediated litter decomposition based on detritivore diversity, abundance, biomass, mean body size, latitude, and interactions between detritivore variables and latitude.

From: Impacts of detritivore diversity loss on instream decomposition are greatest in the tropics

Effect

edf

F

p

Total decomposition

 Diversity

4.00

6.94

<0.001

 Abundance

3.14

6.34

<0.001

 Biomass

1.00

2.00

0.159

 Mean body size

1.86

2.10

0.102

 Latitude

1.00

3.01

0.085

 Diversity × latitude

14.56

6.17

<0.001

 Abundance × latitude

1.00

8.67

0.004

 Biomass × latitude

7.91

4.20

<0.001

Detritivore-mediated decomposition

 Diversity

4.00

0.53

0.716

 Abundance

1.05

0.01

0.912

 Biomass

1.00

0.04

0.843

 Mean body size

1.08

1.00

0.843

 Latitude

1.71

0.27

0.763

 Diversity × latitude

14.14

4.74

<0.001

 Abundance × latitude

8.76

3.30

<0.001

 Biomass × latitude

7.99

4.36

<0.001

  1. All predictors were fitted as tensor product interaction smooths. We show effective degrees of freedom (edf) and values of F and p for each factor. Models explained 69% and 78% of variation in the data, respectively.