Tummel Level II plot - Uptake of heavy metals

Rate of uptake of macronutrients and heavy metals based on estimated tree growth rates
Element Rate of uptake Sample size
Macronutrients (kg ha-1 yr-1) N 4.1 10
P 0.4 10
K 3.1 10
Ca 5.7 10
Mg 0.5 10
Heavy Metals (g ha-1 yr-1) Cu 13.6 10
Zn 66.5 10
Cd 1.12 10
Pb

2.65

10
Ni 3.4 10
Cr 5.4 10

Levels of various macronutrients (mg/kg) in bark, sapwood and heartwood of a selection of dominant and co-dominant trees
Element Bark Sapwood Heartwood
Average Standard error Sample size Average Standard error Sample size Average Standard error Sample size
N 0.472 0.025 5 0.058 0.008 5 0.034 0.006 5
P 0.061 0.003 5 0.006 0.001 5 0.001 0 5
K 0.287 0.011 5 0.052 0.008 5 0.028 0.002 5
Mg 0.051 0.001 5 0.007 0.0006 5 0.007 0.0003 5
Ca 0.724 0.062 5 0.054 0.002 5 0.065 0.004 5
S 105.5 6.777 5 23.85 2.938 5 18.06 3.288 5

Levels of various heavy metals (mg/kg) in bark, sapwood and heartwood of a selection of dominant and co-dominant trees
Element Bark Sapwood Heartwood
Average Standard error Sample size Average Standard error Sample size Average Standard error Sample size
Cu 5.92 1.194 5 2.54 0.390 5 2.1 0.497 5
Zn 83.78 9.419 5 5.86 0.646 5 8.04 0.840 5
Cd 0.98 0.031 5 0.138 0.02 5 0.168 0.019 5
Pb 1.124 0.212 5 0.532 0.074 5 0.382 0.106 5
Ni 1.119 0.110 5 0.809 0.138 5 0.422 0.088 5
Cr 1.425 0.434 5 1.268 0.333 5 0.716 0.187 5