Table 2 Results of a GLM ANOVA on factor scores of PC1 and PC2 with estimates of the main effects of Daphnia biomass (Mass), size class (Size) and experimental tower, and the two-way interactions between these.

PC1

Mass

4, 92

14.99

55.59

<0.001

Size

3, 92

6.66

24.69

<0.001

Tower

1, 92

0.92

3.42

0.068

Mass × Size

12, 92

0.74

2.74

0.003

Mass × Tower

4, 92

0.51

1.88

0.121

Size × Tower

3, 92

0.16

0.59

0.168

PC2

Mass

4, 92

0.71

1.89

0.119

Size

3, 92

18.66

49.96

<0.001

Tower

1, 92

9.74

26.07

<0.001

Mass × Size

12, 92

0.15

0.40

0.960

Mass × Tower

4, 92

2.06

5.51

<0.001

Size × Tower

3, 92

1.11

2.97

0.035