Table 2.
Concentrations of metals in sediments and aboveground and belowground tissues of Zostera marina in various locations from the literature and present study; units are mg kg−1 DW; the symbol “~” indicates that the value is approximated, because it is estimated from a graph; ND indicated not detected; Rongcheng Coast includes sites of Swan, Qingy, Nanw, and Wawu in the present study.
| Location | Sediment or seagrass tissue | Data type | Cr | Cu | Zn | Cd | Pb | Reference |
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Rongcheng Coast | Sediment | Mean | ~40 | ~21 | ~32 | ~0.36 | ~23 | Hu et al. (2019) |
| Aboveground tissue | Mean±SE | 12.67±3.20 | 18.28±6.58 | 28.11±13.69 | 5.12±1.80 | 4.90±2.30 | Hu et al. (2019) | |
| Belowground tissue | Mean±SE | 18.26±5.63 | 10.51±4.74 | 32.56±14.36 | 1.56±0.97 | 16.67±7.16 | Hu et al. (2019) | |
| Sediment | Mean±SE | 78.78±8.21 | 28.82±5.28 | 95.40±19.24 | 0.47±0.08 | 28.35±3.96 | This study | |
| Aboveground tissue | Mean±SE | 5.14±4.67 | 7.60±1.69 | 40.21±5.50 | 4.17±0.90 | 2.75±1.89 | This study | |
| Belowground tissue | Mean±SE | 3.52±2.55 | 6.71±2.12 | 22.48±2.65 | 1.41±0.36 | 2.35±1.32 | This study | |
| Koje Bay | Sediment | Mean±SE | - | 16.83 ± 1.39 | 171.82 ± 10.99 | 0.37 ± 0.01 | 75.38 ± 6.01 | Lee et al. (2019) |
| Aboveground tissue | Mean±SE | - | 17.09 ± 3.07 | 20.11 ± 0.68 | 0.51 ± 0.04 | 1.00 ± 0.06 | Lee et al. (2019) | |
| Belowground tissue | Mean±SE | - | 9.94 ± 1.43 | 12.87 ± 0.50 | 0.17 ± 0.01 | 0.88 ± 0.08 | Lee et al. (2019) | |
| Sediment | Mean±SE | 14.33±1.28 | 8.03±0.84 | 90.03±7.24 | 0.29±0.02 | 33.47±1.60 | This study | |
| Aboveground tissue | Mean±SE | 0.54±0.11 | 11.94±1.00 | 58.08±8.46 | 0.87±0.06 | 1.38±0.15 | This study | |
| Belowground tissue | Mean±SE | 1.11±0.22 | 9.99±0.48 | 40.00±16.80 | 0.55±0.10 | 2.31±0.30 | This study | |
| Yaquina Bay | Sediment | <15 | <10 | <50 | <5 | <15 | Buchman (1989) | |
| Sediment | Mean±SD | - | 34.6±2.3 | 113.8±7.2 | <1 | 17±0.6 | Sherman (2003) | |
| Sediment | Mean±SD | 66.1±7.9 | 13.29±8.5 | 59.6±29.6 | 0.17±0.05 | 12±2.1 | Nelson et al. (2004) | |
| Sediment | Means | 33.5 | 12.69 | 51.4 | 0.24 | 7.02 | Britton and Siipola (1991) | |
| Leaf | Mean±SD | 7.2±4 | 10±3 | 29±6 | 1.7±0.5 | ND | Kaldy (2006) | |
| Rhizome | Mean±SD | 7.4±10 | 8.3±14 | 18±8 | 0.8±0.6 | ND | Kaldy (2006) | |
| Root | Mean±SD | 38±23 | 47±64 | 52±16 | 6.4±16 | ND | Kaldy (2006) | |
| Sediment | Mean±SE | 110.57±1.60 | 19.97±6.18 | 82.47±14.13 | 0.30±0.03 | 15.57±2.74 | This study | |
| Aboveground tissue | Mean±SE | 0.79±0.05 | 10.24±0.80 | 58.52±0.68 | 0.23±0.00 | 1.48±0.45 | This study | |
| Belowground tissue | Mean±SE | 2.45±0.21 | 6.75±0.31 | 54.41±0.83 | 0.13±0.00 | 2.39±0.63 | This study | |
| Humboldt Bay | Sediment | Mean | - | 6.495 | 45.3 | - | - | Miller et al. (2022) |
| Sediment | Mean±SE | 1244.10±161.96 | 20.20±1.16 | 86.67±2.62 | 0.32±0.01 | 9.30±0.40 | This study | |