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Table 1 Gorgonian presence and frequency of occurrence at the different depth levels for the whole gorgonian assemblage (all gorgonians) and each species separately

From: Spatial and depth-associated distribution patterns of shallow gorgonians in the Algarve coast (Portugal, NE Atlantic)

Depth level t All gorgonians Species twg (%) Colonies Density (colonies per 5 square metres)
twg (%) n (%) Mean SE Maximum
0–5 9 0 (0.0) 0 (0.0) 0 (0.0)
5–10 63 11 (17.5) E. labiata 4 (6.3) 6 (16.7) 0.1 0.50 3
E. verrucosa 5 (7.9) 12 (33.3) 0.2 0.75 5
L. lusitanica 2 (3.2) 2 (5.6) 0.0 0.03 1
L. sarmentosa 8 (12.7) 16 (44.4) 0.3 0.76 7
10–15 24 16 (66.7) E. gazella 3 (12.5) 3 (6.1) 0.1 0.00 1
E. labiata 7 (29.2) 14 (28.6) 0.6 0.44 4
E. verrucosa 7 (29.2) 12 (24.5) 0.5 0.42 4
L. lusitanica 2 (8.3) 2 (4.1) 0.1 0.13 1
L. sarmentosa 7 (29.2) 18 (36.7) 0.8 0.65 5
15–20 72 69 (95.8) E. gazella 50 (69.4) 260 (24.1) 3.6 0.72 34
E. labiata 61 (84.7) 484 (44.9) 6.7 0.85 29
Eunicella sp. 1 (1.4) 1 (0.1) 0.0 1
E. verrucosa 48 (66.7) 181 (16.8) 2.5 0.59 19
L. lusitanica 16 (22.2) 26 (2.4) 0.4 0.23 4
L. sarmentosa 35 (48.6) 125 (11.6) 1.7 0.57 15
20–25 30 29 (96.7) E. gazella 23 (76.7) 153 (14.4) 5.1 1.78 38
E. labiata 29 (96.7) 327 (30.7) 10.9 2.43 55
E. verrucosa 26 (86.7) 264 (24.8) 8.8 2.19 39
L. lusitanica 9 (30.0) 30 (2.8) 1.0 0.60 6
L. sarmentosa 24 (80.0) 291 (27.3) 9.7 2.18 42
25–30 9 9 (100.0) E. gazella 7 (77.8) 44 (17.3) 4.9 1.97 15
E. labiata 8 (88.9) 74 (29.1) 8.2 1.80 16
E. singularis 1 (11.1) 3 (1.2) 0.3 3
E. verrucosa 9 (100.0) 86 (33.9) 9.6 2.44 22
L. lusitanica 6 (66.7) 12 (4.7) 1.3 0.37 3
L. sarmentosa 8 (88.9) 35 (13.8) 3.9 1.08 9
  1. t, number of transects sampled; twg, transects with gorgonians; n number of colonies