Reef Flat Community Structure of Atol das Rocas, Northeast Brazil and Southwest Atlantic

Table 4

Summary results of SIMPER show the percentage contribution of species for the similarity into the groups of station and the dissimilarities within them. Bold type values correspond to species with more than 15% contribution.

Average similarity (%)	Group 1		Group 2	Group 3	Group 4
	76.30		77.34	70.29	74.00
Contribution (%)
Cyanobacteria	11.93		8.90	21.88
Dendropoma sp.				7.66
Dictyosphaeria ocellata	11.09		23.44	34.13	21.27
Digenea simplex			33.75
Gelidiella acerosa	22.67
Gelidiella setacea	9.92
Hydrolithon pachydermum	17. 53		21.09	32.46	27.81
Lyngbya confervoides					17.72
Polychaeta tube					25.08
Zoanthus sociatus	23.98		7.22
Cumulative (%)	97.11		94.39	96.13	91.88
Average dissimilarity (%)	1 × 2	1 × 3	1 × 4	2 × 3	2 × 4	3 × 4
	50.70	55.01	67.89	39. 39	47.00	45.11
Contribution (%)
Cyanobacteria	6.31	4.17	9.06	9.14	10.84	18.85
Dendropoma sp.	5.52	8.51		12.01	3.67	11.85
Dictyosphaeria ocellata	5.78	10.52	6.35	7.97	5.95	6.05
Dictyosphaeria versluysii	3.86			5.82	5.88	6.26
Digenea simplex	22.48	7.41	7.31	22.32		11.08
Gelidiella acerosa	18.65	19.50	15.04		15.24
Gelidiella setacea	9.41	10.37	7.44
Hydrolithon pachydermum		5.74	4.07	8.45	6.20
Lyngbya confervoides			11.92	5.89	15.69	17.18
Polychaeta tube	5.75	4.02	13.09	8.00	17.20	21.57
Zoanthus sociatus	12.54	20.70	15.97	13.81	11.00
Cumulative (%)	90.27	90.94	90.26	93.40	91.68	92.85