Table 3. Summary output of the Generalized Linear Mixed Models (GLMM) for epifaunal abundance and taxon richness.

Transect was a random variable. Due to the low replicate number, variation explained by the random effect and the standard deviation equaled to zero or was very low in some models. The dfs were 31. One colony was removed from all analyses.

	Estimate	Standard error	z-Value	Pr	Standard deviation (random effect)
Epifaunal abundance
Surface area	0.003	0.001	1.05	0.29	1.88 e−06
Partial mortality	0.01	0.03	0.40	0.68	0.06
Colony height	0.02	0.32	0.43	0.65	0
Space between branches	0.03	0.42	0.07	0.93	0.07
Penetration depth	0.02	0.07	0.30	0.75	0.07
Flow	0.02	0.22	0.12	0.89	0.07
Taxon richness
Surface area	−0.0003	<0.001	−0.41	0.67	0.12
Partial mortality	0.03	0.02	1.70	0.08	0.16
Colony height	0.01	0.01	0.89	0.37	0.11
Space between branches	−0.008	0.24	−0.03	0.91	0.16
Penetration depth	0.05	0.05	0.99	0.32	0.16
Flow	−0.10	0.14	−0.71	0.47	0.16