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Table 1 Seaweed community features (species richness, proportions of Rhodophyta, Chlorophyta and Heterokontophyta, ESG ratio and functional group composition) for 8 sections of shore within the bay of Ferraria and 3 sections of shore in Porto Formoso

From: Intertidal rocky shore seaweed communities subject to the influence of shallow water hydrothermal activity in São Miguel (Azores, Portugal)

Site Ferraria Porto Formoso
Substratum type Vertical bedrock Boulders Pebbles/small boulders
Shore section A B C D Average A B C D Average A B C Average
Species richness 11 11 18 19 14.8 9 16 16 14 13.8 10 18 19 15.7
Proportions
 Rhodophyta 0.45 0.64 0.61 0.68 0.60 0.22 0.38 0.38 0.36 0.34 0.60 0.61 0.53 0.58
 Chlorophyta 0.36 0.18 0.22 0.21 0.24 0.67 0.38 0.31 0.29 0.41 0.20 0.17 0.21 0.19
 Heterokontophyta 0.18 0.18 0.17 0.11 0.16 0.11 0.25 0.31 0.36 0.26 0.20 0.22 0.26 0.23
ESG ratio 0.57 0.83 1.00 0.58 0.75 0.29 0.33 0.14 0.27 0.26 1.50 0.80 2.80 1.70
Proportions
 FG1 0 0 0 0 0.00 0 0 0.06 0 0.02 0 0 0 0.00
 FG2 0.27 0.27 0.28 0.32 0.29 0.33 0.38 0.31 0.29 0.33 0.10 0.06 0.05 0.07
 FG3 0.36 0.18 0.22 0.16 0.23 0.44 0.19 0.25 0.36 0.31 0 0.22 0.05 0.09
 FG4 0.09 0.09 0.06 0.05 0.07 0.11 0.13 0.19 0.07 0.13 0.40 0.39 0.26 0.35
 FG5 0.27 0.45 0.44 0.47 0.41 0.11 0.25 0.19 0.29 0.21 0.40 0.22 0.47 0.36
 FG6 0 0 0 0 0.00 0 0 0 0 0.00 0.10 0.06 0.11 0.09
 FG7 0 0 0 0 0.00 0 0 0 0 0.00 0 0 0 0.00
 FG8 0 0 0 0 0.00 0 0.06 0 0 0.02 0 0.06 0.05 0.04
  1. Legend for shore section according to Figs. 2 and 3
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Helgoland Marine Research

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