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) | |