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Table 1 Mean trace metal concentrations in seawater (μg l−1, n = 12 per site) and reef sediments (μg g−1 dry weight, n = 3 per site) in the sampling locations. Standard deviations are given in parentheses

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

Metal Sample Locations
I II III IV V VI VII
Cu W 3.35 (0.56) 3.97 (0.59) 5.23 (0.98) 3.22 (0.85) 2.41 (0.64) 2.45 (0.55) 2.08 (0.54)
S 7.30 (1.36) 8.18 (1.09) 11.25 (1.29) 3.58 (0.81) 1.09 (0.27) 6.82 (1.11) 2.79 (0.42)
Zn W 11.74 (1.52) 12.41 (1.49) 15.21 (1.19) 7.31 (0.92) 8.01 (0.90) 9.10 (1.09) 7.18 (0.92)
S 25.42 (3.65) 26.09 (2.24) 25.44 (2.93) 27.80 (3.35) 3.09 (0.49) 18.96 (1.68) 14.90 (0.95)
Pb W 0.68 (0.13) 0.62 (0.06) 0.80 (0.04) 0.59 (0.03) 0.43 (0.02) 0.61 (0.03) 0.37 (0.04)
S 10.55 (1.62) 11.09 (1.13) 12.64 (1.57) 10.04 (0.78) 6.68 (0.99) 8.61 (0.71) 3.67 (0.20)
Cd W 0.32 (0.01) 0.22 (0.01) 0.43 (0.01) 0.23 (0.01) 0.20 (0.01) 0.13 (0.00) 0.17 (0.02)
S 3.72 (0.60) 3.15 (0.36) 4.30 (0.91) 3.42 (0.59) 2.48 (0.28) 3.29 (0.34) 1.97 (0.27)
Ni W 2.92 (0.29) 4.31 (0.56) 5.80 (0.99) 3.48 (0.64) 2.79 (0.41) 3.12 (0.39) 2.33 (0.26)
S 13.08 (0.53) 16.36 (1.07) 18.00 (1.38) 14.23 (1.27) 11.84 (0.91) 9.67 (1.18) 4.25 (0.41)
Co W 0.45 (0.04) 0.40 (0.03) 0.52 (0.03) 0.34 (0.02) 0.21 (0.01) 0.30 (0.04) 0.25 (0.01)
S 12.17 (0.38) 14.02 (0.74) 13.29 (0.66) 11.54 (0.82) 5.16 (0.46) 7.95 (0.49) 5.21 (0.40)
Fe W 13.88 (0.94) 23.55 (2.43) 28.35 (3.04) 13.97 (1.01) 10.44 (0.81) 12.14 (0.98) 9.10 (0.62)
S 1430.30 (136.50) 776.82 (60.73) 1285.00 (89.50) 2150.60 (155.94) 321.50 (39.46) 2104.70 (126.45) 790.90 (59.66)
  1. W: seawater, S: sediment