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Table 2 Mean trace metal concentrations (μg g−1 dry weight) in coral species (skeleton plus tissue) collected from the sampling reef sites (n = 3 per site)

From: Heavy metals distribution in the coral reef ecosystems of the Northern Red Sea

Metal Species Locations
I II III IV V VI VII
Cu Acropora hemprichi 2.10 (0.32) 9.54 (0.89) 3.20 (0.36)
Acropora pharaonis 2.19 (0.25) 1.15 (0.27) 10.44 (1.28) 7.19 (0.86) 2.63 (0.36) 4.05 (0.54) 1.56 (0.37)
Acropora humilis 2.98 (0.34) 8.66 (0.91) 3.25 (0.36) 1.28 (0.14) 1.35 (0.11)
Stylophora pistillata 2.13 (0.20) 1.73 (0.21) 8.35 (1.14) 3.00 (0.33) 1.77 (0.35) 2.50 (0.32)
Lithophyton arboreum 3.21 (0.58) 2.92 (0.49) 3.63 (0.16) 5.00 (0.39) 3.38 (0.43) 2.60 (0.27)
Sarcophyton trocheliophorum 4.95 (0.60) 13.66 (1.55) 4.65 (0.95) 4.25 (0.65)
Sinularia spp. 5.50 (1.18) 4.13 (0.19) 9.39 (0.77) 4.88 (0.53) 2.83 (0.26) 3.33 (0.28)
Zn Acropora hemprichi 58.35 (2.87) 36.63 (2.60) 26.09 (1.88)
Acropora pharaonis 21.22 (2.43) 6.73 (0.62) 45.08 (2.80) 17.46 (1.46) 19.99 (2.04) 32.65 (2.93) 0.54 (0.09)
Acropora humilis 25.94 (2.43) 56.72 (2.46) 8.12 (1.49) 20.62 (2.48) 3.18 (0.41)
Stylophora pistillata 15.68 (1.58) 9.28 (0.92) 41.44 (2.48) 20.48 (1.86) 5.66 (0.92) 7.62 (0.95)
Lithophyton arboreum 58.19 (4.33) 82.56 (7.29) 81.19 (3.87) 82.39 (3.98) 123.60 (12.43) 61.13 (3.91)
Sarcophyton trocheliophorum 29.85 (2.46) 37.06 (2.63) 74.50 (5.51) 59.06 (2.35)
Sinularia spp. 31.28 (3.66) 141.30 (16.87) 50.30 (4.46) 31.36 (2.33) 51.61 (3.78) 38.67 (3.53)
Pb Acropora hemprichi 9.16 (0.85) 7.12 (0.86) 31.42 (3.19)
Acropora pharaonis 16.36 (1.47) 29.96 (2.96) 8.59 (0.97) 27.27 (2.72) 32.72 (2.92) 29.45 (3.18) 24.54 (2.36)
Acropora humilis 14.18 (0.52) 26.18 (1.78) 25.45 (2.38) 25.20 (3.27) 21.27 (2.15)
Stylophora pistillata 12.36 (1.27) 26.47 (1.72) 6.89 (0.35) 29.09 (2.32) 24.72 (2.52) 30.54 (2.77)
Lithophyton arboreum 36.00 (2.53) 14.54 (1.29) 28.40 (3.49) 36.36 (2.97) 34.36 (2.93) 14.18 (2.39)
Sarcophyton trocheliophorum 18.54 (1.69) 11.63 (1.09) 20.29 (1.95) 24.72 (2.06)
Sinularia spp. 36.00 (2.59) 16.36 (1.14) 32.07 (2.67) 36.01 (2.01) 27.81 (1.63) 26.18 (2.10)
Cd Acropora hemprichi 0.60 (0.03) 1.34 (0.20) 3.76 (0.52)
Acropora pharaonis 1.31 (0.15) 3.54 (0.49) 2.05 (0.28) 2.07 (0.31) 3.04 (0.20) 3.10 (0.30) 1.82 (0.31)
Acropora humilis 1.62 (0.23) 2.11 (0.25) 3.26 (0.66) 2.79 (0.35) 1.84 (0.19)
Stylophora pistillata 0.54 (0.03) 3.06 (0.44) 1.26 (0.09) 3.33 (0.61) 2.88 (0.23) 2.78 (0.24)
Lithophyton arboreum 4.56 (0.76) 1.40 (0.17) 2.47 (0.32) 2.92 (0.31) 4.11 (0.48) 3.10 (0.36)
Sarcophyton trocheliophorum 2.41 (0.24) 0.89 (0.12) 1.58 (0.21) 1.69 (0.19)
Sinularia spp. 3.82 (0.43) 9.59 (0.69) 3.52 (0.33) 4.11 (0.40) 1.98 (0.24) 2.51 (0.20)
Ni Acropora hemprichi 1.35 (0.17) 8.22 (0.75) 14.53 (1.56)
Acropora pharaonis 5.74 (0.74) 12.11 (0.79) 9.01 (0.15) 7.11 (0.72) 11.74 (1.10) 11.66 (1.15) 9.84 (0.98)
Acropora humilis 6.25 (0.50) 10.02 (0.66) 9.83 (0.64) 8.10 (0.65) 10.97 0.80)
Stylophora pistillata 1.61 (0.17) 13.22 (1.13) 7.88 (0.62) 11.47 (0.72) 13.20 (0.85) 13.65 (0.64)
Lithophyton arboreum 18.20 (1.29) 7.11 (0.58) 11.23 (0.79) 11.65 (0.66) 12.15 (0.83) 6.84 (0.34)
Sarcophyton trocheliophorum 8.56 (0.70) 4.20 (0.31) 3.81 (0.24) 3.15 (0.30)
Sinularia spp. 14.20 (1.04) 186.00 (8.54) 13.13 (0.52) 15.83 (1.00) 9.34 (0.65) 12.20 (0.91)
Co Acropora hemprichi 1.38 (0.16) 3.70 (0.38) 6.36 (0.60)
Acropora pharaonis 1.97 (0.18) 5.86 (0.64) 5.29 (0.51) 4.63 (0.53) 5.36 (0.59) 5.56 (0.54) 5.36 (0.43)
Acropora humilis 3.11 (0.34) 4.45 (0.46) 4.07 (0.38) 5.01 (0.23) 5.00 (0.31)
Stylophora pistillata 1.74 (0.20) 5.25 (0.54) 4.64 (0.27) 6.00 (0.45) 5.58 (0.56) 5.74 (0.52)
Lithophyton arboreum 4.87 (0.32) 2.45 (0.21) 5.16 (0.50) 4.71 (0.41) 6.52 (0.61) 4.33 (0.41)
Sarcophyton trocheliophorum 3.12 (0.35) 1.36 (0.11) 3.45 (0.32) 3.11 (0.36)
Sinularia spp. 7.71 (0.64) 7.10 (0.22) 7.45 (0.50) 7.68 (0.61) 5.03 (0.47) 4.71 (0.42)
Fe Acropora hemprichi 22.61 (1.76) 286.21 (35.89) 37.77 (2.55)
Acropora pharaonis 27.28 (1.76) 32.74 (2.66) 321.54 (32.28) 33.41 (1.71) 21.44 (1.67) 23.84 (1.62) 30.89 (1.84)
Acropora humilis 90.01 (4.52) 60.77 (3.00) 20.19 (1.54) 13.25 (1.30) 40.26 (1.84)
Stylophora pistillata 16.87 (1.17) 61.08 (2.18) 297.30 (18.48) 26.54 (1.54) 24.23 (1.56) 25.19 (1.60)
Lithophyton arboreum 50.43 (2.73) 125.90 8.91) 55.38 (2.59) 44.23 (1.94) 44.16 (2.09) 44.58 (1.73)
Sarcophyton trocheliophorum 36.49 (1.60) 27.31 (1.33) 32.95 (1.67) 121.10 (6.17)
Sinularia spp. 44.61 (1.72) 45.67 (2.04) 55.08 (2.26) 38.32 (1.78) 17.69 (1.19) 57.31 (2.44)
  1. Numbers in parentheses indicate the standard deviations (SD)
  2. Hard corals: Acropora hemprichi, Acropora pharaonis, Acropora humilis and Stylophora pistillata. Soft corals: Lithophyton arboreum, Sarcophyton trocheliophorum and Sinularia spp
  3. –: not determined