A Constant temperature regime


Independent variables

Significant terms

Lratio

d.f.

pvalue

1. SR

SR

12.7

6

0.013

2. SC

SC

36

32

<0.0001

B Varying temperature regimes

Independent variable

Significant terms

Lratio

d.f.

pvalue

1. SR, A, F

SR × A

30.1

18

<0.0001


A × F

5.66

21

0.017

Importance of independent variables:

SR
 
94.4

14

<0.0001

F
 
8.34

20

0.0154

A
 
37.8

16

<0.0001

2. SC, A, F

SC × A × F

132

156

<0.0001

Importance of independent variables:

SC
 
1485

66

<0.0001

F
 
338

124

<0.0001

A
 
540

124

<0.0001

 For each model, the highest order terms are presented and, where multiple terms are present, the relative importance of individual terms (and their interactions) within a model can be compared using the likelihood ratios (Lratios). Note that separate models were run to test the effects of species richness (SR) and species composition (SC). A: amplitude of temperature change, F: frequency of temperature fluctuation. d.f.: degrees of freedom.