Table 2 Quantitative traits of the concentration boundary layer (CBL) measured in Acropora cytherea, Pocillopora verrucosa, and Porites cylindrica, in light or darkness combined with low flow (2 cm s-1) or moderate flow (6 cm s-1), under control or ocean acidification (OA) treatments. Values are expressed as mean ± 1 SD, with measurement replication (n).
From: Effects of water flow and ocean acidification on oxygen and pH gradients in coral boundary layer
Species | Flow | Treatment | Light | O2 CBL Thickness (µm) | H+ CBL Thickness (µm) | O2 CBL Thickness (µm) | H+ CBL Thickness (µm) | Surface ∆O2 (µM) | Surface ∆pH | O2 Flux (µmol cm-2 h-1) |
|---|---|---|---|---|---|---|---|---|---|---|
Acropora cytherea | Low | Control | Light | 124 ± 75 (72) | 94 ± 53 (32) | 104 ± 29 (9) | 119 ± 38 (8) | 73.8 ± 25.2 (9) | 0.05 ± 0.02 (8) | 0.53 ± 0.16 (9) |
Low | Control | Dark | 101 ± 33 (9) | 102 ± 80 (8) | –45.7 ± 16.5 (9) | –0.02 ± 0.01 (8) | –0.38 ± 0.13 (9) | |||
Moderate | Control | Light | 79 ± 56 (9) | 88 ± 46 (8) | 67.2 ± 34.6 (9) | 0.03 ± 0.02 (8) | 0.67 ± 0.25 (9) | |||
Moderate | Control | Dark | 81 ± 46 (9) | 65 ± 28 (8) | –45.4 ± 25.2 (9) | –0.02 ± 0.01 (8) | –0.53 ± 0.23 (9) | |||
Low | OA | Light | 107 ± 54 (36) | 202 ± 101 (9) | 137 ± 45 (9) | 73.4 ± 25.9 (9) | 0.05 ± 0.03 (9) | 0.32 ± 0.16 (9) | ||
Low | OA | Dark | 203 ± 92 (9) | 120 ± 54 (9) | –46.1 ± 14.3 (9) | –0.03 ± 0.01 (9) | –0.23 ± 0.12 (9) | |||
Moderate | OA | Light | 108 ± 45 (9) | 70 ± 25 (9) | 57.0 ± 29.4 (9) | 0.02 ± 0.01 (9) | 0.41 ± 0.28 (9) | |||
Moderate | OA | Dark | 111 ± 44 (9) | 100 ± 68 (9) | –40.5 ± 17.4 (9) | –0.01 ± 0.00 (9) | –0.35 ± 0.13 (9) | |||
Pocillopora verrucosa | Low | Control | Light | 162 ± 75 (72) | n/a | 201 ± 93 (9) | n/a | 94.7 ± 42.2 (9) | n/a | 0.68 ± 0.44 (9) |
Low | Control | Dark | 209 ± 75 (9) | n/a | –87.5 ± 18.5 (9) | n/a | –0.45 ± 0.20 (9) | |||
Moderate | Control | Light | 118 ± 60 (9) | n/a | 58.7 ± 43.4 (9) | n/a | 0.48 ± 0.20 (9) | |||
Moderate | Control | Dark | 108 ± 37 (9) | n/a | –72.5 ± 23.8 (9) | n/a | –0.63 ± 0.21 (9) | |||
Low | OA | Light | 106 ± 72 (36) | 211 ± 82 (9) | 148 ± 99 (9) | 101.9 ± 40.6 (9) | 0.02 ± 0.04 (9) | 0.51 ± 0.29 (9) | ||
Low | OA | Dark | 166 ± 29 (9) | 144 ± 55 (9) | –86.2 ± 25.1 (9) | –0.09 ± 0.05 (9) | –0.45 ± 0.13 (9) | |||
Moderate | OA | Light | 155 ± 64 (9) | 57 ± 37 (9) | 52.6 ± 22.3 (9) | 0.01 ± 0.01 (9) | 0.37 ± 0.21 (9) | |||
Moderate | OA | Dark | 129 ± 74 (9) | 76 ± 31 (9) | –67.1 ± 16.4 (9) | –0.05 ± 0.04 (9) | –0.51 ± 0.15 (9) | |||
Porites cylindrica | Low | Control | Light | 192 ± 147 (72) | n/a | 282 ± 196 (9) | n/a | 96.6 ± 28.5 (9) | n/a | 0.39 ± 0.23 (9) |
Low | Control | Dark | 287 ± 170 (9) | n/a | –57.2 ± 15.0 (9) | n/a | –0.20 ± 0.16 (9) | |||
Moderate | Control | Light | 102 ± 34 (9) | n/a | 78.8 ± 29.8 (9) | n/a | 0.65 ± 0.28 (9) | |||
Moderate | Control | Dark | 106 ± 39 (9) | n/a | –44.3 ± 15.8 (9) | n/a | –0.37 ± 0.15 (9) | |||
Low | OA | Light | 103 ± 51 (36) | 252 ± 140 (9) | 119 ± 44 (9) | 100.1 ± 53.5 (9) | 0.04 ± 0.02 (9) | 0.43 ± 0.45 (9) | ||
Low | OA | Dark | 287 ± 166 (9) | 128 ± 62 (9) | –44.0 ± 12.7 (9) | –0.05 ± 0.03 (9) | –0.17 ± 0.13 (9) | |||
Moderate | OA | Light | 117 ± 81 (9) | 81 ± 50 (9) | 83.1 ± 37.3 (9) | 0.02 ± 0.01 (9) | 0.78 ± 0.60 (9) | |||
Moderate | OA | Dark | 104 ± 58 (9) | 86 ± 36 (9) | –37.9 ± 11.3 (9) | –0.02 ± 0.01 (9) | –0.34 ± 0.08 (9) |
