Table II. Soil and leaf metal concentrations in populations of N. caerulescens analyzed in this study.
Leaf metal concentrations corresponding to metal hyperaccumulation (greater than 100, 3,000, or 1,000 mg kg−1 for Cd, Zn, and Ni, respectively) are highlighted in boldface (Krämer, 2010). n.d., Below detection limits. Values given are arithmetic means of between one and three replicate samples.
| Code | Population | Soil Concentration |
Leaf Concentration |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Cd | Zn | Cu | Ni | Cd | Zn | Cu | Ni | ||
| mg kg−1 dry mass | mg kg−1 dry biomass | ||||||||
| CZ2 | Czech Republic: Mohelno | n.d. | 58 | 7.9 | 170 | 17 | 1,600 | 3.5 | 1,800 |
| SK1 | Slovakia: Špania Dolina | 0.50 | 120 | 320 | 11 | 16 | 7,400 | 12 | 14 |
| F1 | France: Bergenbach | n.d. | 82 | 10 | 1,800 | 5.3 | 2,100 | 3.9 | 10,000 |
| F2 | France: Viviez | 51 | 5,100 | 425 | 36 | 390 | 6,100 | 12 | 3.1 |
| F3 | France, Firmi: Puy de Wolf | 0.55 | 210 | 31 | 2,600 | 110 | 4,000 | 5.7 | 13,000 |
| F4 | France: St. Félix de Pallières | 98 | 22,000 | 60 | 12 | 720 | 12,000 | 15 | 3.0 |
| F5 | France: St. Laurent le Minier | 220 | 94,000 | 12 | 37 | 750 | 13,000 | 6.1 | 1.4 |