Table 1. Fish density.

Predictors	Model Rank			β	SE	95% CI	wip
	1	2	3
Constant	•	•	•	−0.750	−0.938	−0.220 to 1.189	1.00
Median shelter volume	•	•	•	0.886	0.132	0.628 to 1.144	1.00
Shelter density	•	•	•	0.631	0.116	0.404 to 0.857	1.00
Zone RC vs. FS	•	•		0.767	0.214	0.348 to 1.185	0.93
Zone SG vs. FS	•	•		1.105	0.356	0.406 to 1.803	0.93
Reefs NB vs. CH	•			0.296	0.150	0.003 to 0.589	0.64
Shelter volume * shelter density	•	•	•	0.545	0.118	0.313 to 0.779	1.00
No. of parameters (K)	8	7	5
AICc	38.371	49.992	52.680
ΔAICc	0.000	1.621	4.309
wim	0.641	0.285	0.074
Deviance explained	83.9	79.7	74.4

Predictors and interaction terms included in the three best models explaining variation in fish density in thirty 25 m² quadrats located in three reef zones (RC = reef crest, SG = spur and groove, FS = fragmented spurs) and two reefs (NB = North Bellairs, CH = Chefette). Variables included in each model are denoted with “•”. Predictors for which the 95% confidence interval (CI) did not overlap zero are indicated in bold font. The number of parameters (K) used in each model, the AICc, the ΔAICc (AIC of model_i−AIC of best model), the w_im (normalized Akaike weights for each candidate model) and the deviance explained are shown at the bottom of the table. Model averaged estimates of parameters (β), unconditional standard errors (SE), 95% CI and the normalized Akaike weight for each predictor (w_ip) are also shown. All models include a constant.