*Ecological Archives* E094-152-A3

Alexander T. Wolf, Maggy M. Nugues. 2013. Synergistic effects of algal overgrowth and corallivory on Caribbean reef-building corals. *Ecology* 94:1667–1674. http://dx.doi.org/10.1890/12-0680.1

Appendix C. Statistical output tables for the laboratory experiment.

Table C1. ANOVA of the fixed effects of algae and corallivores on coral mortality and bleaching (nested three-Way ANOVA).

Hermodice carunculataCoralliophila abbreviata Source df Mean squareFratioP Mean squareFratioP

Coral mortality

Algae

1

2.79

19.34

< 0.001

1.76

13.99

<0.001Corallivore

1

0.71

4.90

0.027

0.01

0.04

0.836

Algae × Corallivore

1

0.71

4.90

0.027

0.02

0.18

0.673

Residuals

42

Coral bleaching

Algae

1

7.27

44.29

< 0.001

9.88

77.68

< 0.001Corallivore

1

0.17

1.05

0.305

0.00

0.03

0.865

Algae × Corallivore

1

0.21

1.27

0.259

0.04

0.34

0.558

Residuals

42

Plot was included as random factor and the tank sections (

n= 8) were nested within plot. One degree of freedom was allocated to the factor plot, and one degree of freedom was allocated to the nested factor.

Table C2. ANOVA of the fixed effect of *Hermodice carunculata* on coral mortality in the presence of algae (nested two-Way ANOVA). This analysis was performed to explore the significant interaction between algae and corallivores on coral mortality shown above.

Source

df

Mean-square

Fratio

PCorallivore

1

1.41

4.97

0.026Residuals

20

Plot was included as random factor and the tank sections (

n= 8) were nested within plot. One degree of freedom was allocated to the factor plot, and one degree of freedom was allocated to the nested factor.