Table 3. Contribution of hydroid species to the observed similarity between pelagic Sargassum species and morphotypes calculated by similarity percentages (SIMPER).

Groups	Av. cov.	Av. sim.	Sim/SD	Contrib. %	Cum. %
Sargassum fluitans III
Average similarity: 89.32
Clytia noliformis	9.73	89.19	5.87	99.85	99.85
Sargassum natans I
Average similarity: 34.79
Clytia noliformis	4.91	18.96	0.51	54.49	54.49
Zanclea alba	3.97	11.55	0.63	33.21	87.70
Halopteris diaphana	1.77	2.71	0.44	7.79	95.49
Sargassum natans VIII
Average similarity: 89.26
Aglaophenia latecarinata	9.76	89.13	6.60	99.85	99.85

Note:

Av. cov., average hydroid cover; Av. sim., average similarity; Sim/SD, similarity to standard deviation ratio; Contrib %, percentage contribution; Cum. %, cumulative percentage contribution.