Table 3.
Comparison of metals’ concentrations (mg kg−1) among the studied tree species, inside the airport area. Within the same metal, values followed by different letters are significantly different (p < 0.05, Duncan's test)
| Mean concentration (Std error of mean in parenthesis), in mg kg−1 dry matter | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Urban Forest Trees | Cr | Cu | Co | Zn | Ni | Pb | Fe | Mn | Cd |
| Pinus brutia | 1.481 a (0.111) | 5.542 (0.182) | 0.092 bc (0.006) | 20.773 b (1.466) | 1.164 a (0.087) | 1.155 a (0.407) | 227.533 a (20.914) | 21.743 b (2.457) |
0.009 c (0.006) |
| Populus alba | 0.309 b (0.014) | 5.334 (0.559) | 0.728 a (0.083) | 55.463 a (1.755) | 1.094 a (0.256) | 0.062 b (0.013) | 62.093 c (5.307) | 30.287 ab (2.774) | 0.030 b (0.013) |
| Tamarix sp. | 0.499 b (0.097) | 6.345 (0.416) | 0.171 b (0.066) | 13.149 c (1.973) | 0.495 b (0.068) | 0.268 b (0.127) | 167.166 b (14.042) | 32.400 a (3.176) | 0.330 a (0.247) |
| Olea europaea | 0.398 b (0.059) | 5.427 (0.639) | 0.019 bc (0.007) | 15.046 c (1.291) | 0.779 ab (0.200) | 0.133 b (0.075) | 97.410 c (12.252) | 23.163 ab (2.786) | 0.003 c (0.000) |
| Nerium oleander | 0.418 b (0.009) | 6.609 (0.597) | 0.006 c (0.000) | 18.070 bc (1.149) | 0.958 ab (0.014) | 0.062 b (0.013) | 87.840 c (5.672) | 28.123 ab (3.563) | 0.003 c (0.000) |