Table 1 Effects of pH, orientation (top-side with high light and intense grazing, vs bottom side with low light and little grazing) and time (5 vs 13 months of deployment) on CCA cover on the tiles (Fig. 4 - top row). Generalized linear model and backward elimination of non-significant interaction terms

From: In situ changes of tropical crustose coralline algae along carbon dioxide gradients

 

Df

Deviance

F

P

NULL

264

4451.5

  

pH

1

1901.7

326.5

<0.001

Orientation

1

256.8

44.10

<0.001

Time

1

0.600

0.103

0.748

Tile

65

930.0

2.457

<0.001

pH: Orientation

1

118.1

20.28

<0.001

pH: Time

1

37.84

6.498

0.012