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Table 3 Decay components for the single and two-component models for the 'surface' and 'buried' conditions. Treatments with no data for alpha symbol and k1 indicate that a single exponential model was used and the results for these are listed under k2. Decay parameters were calculated for a 28-month period. Species abbreviations as in Table 2
Site Spp Surface Buried
alpha symbol ± SE k1 ± SE k2 ± SE alpha symbol ± SE k1 ± SE k2 ± SE
SA Ag 0.128 ± 0.024 1.320 ± 1.571 0.021 ± 0.002 0.222 ± 0.026 0.517 ± 0.150 0.010 ± 0.002
Lr 0.027 ± 0.000 9.860 ± 0.002 0.019 ± 0.025     0.015 ± 0.001
Rm 0.017 ± 0.000 11.619 ± 0.004 0.033 ± 0.035 0.089 ± 0.016 1.558 ± 2.275 0.020 ± 0.002
SB Ag 0.123 ± 0.022 2.500 ± 16.580 0.025 ± 0.002 0.193 ± 0.012 1.257 ± 0.509 0.010 ± 0.001
Lr     0.024 ± 0.001 0.085 ± 0.000 11.757 ± 0.002 0.008 ± 0.018
Rm 0.038 ± 0.000 15.521 ± 0.002 0.030 ± 0.018 0.150 ± 0.019 1.065 ± 0.666 0.014 ± 0.002
SC Ag 0.123 ± 0.000 12.197 ± 0.001 0.027 ± 0.012 0.189 ± 0.025 0.436 ± 0.121 0.013 ± 0.002
Lr 0.077 ± 0.015 0.662 ± 0.362 0.019 ± 0.001 0.043 ± 0.000 11.045 ± 0.002 0.014 ± 0.017
Rm 0.087 ± 0.000 10.023 ± 0.002 0.019 ± 0.017 0.145 ± 0.013 0.719 ± 0.190 0.015 ± 0.001
SD Ag 0.283 ± 0.104 0.367 ± 0.247 0.013 ± 0.009 0.223 ± 0.017 0.699 ± 0.182 0.005 ± 0.001
Lr 0.067 ± 0.000 10.261 ± 0.003 0.029 ± 0.022 0.109 ± 0.013 1.478 ± 1.643 0.007 ± 0.001
Rm 0.094 ± 0.035 0.406 ± 0.314 0.013 ± 0.002 0.165 ± 0.016 0.747 ± 0.247 0.009 ± 0.001
NHB Ag 0.128 ± 0.000 13.150 ± 0.002 0.025 ± 0.018 0.159 ± 0.022 1.646 ± 2.082 0.014 ± 0.002
Lr 0.063 ± 0.000 11.168 ± 0.002 0.018 ± 0.016 0.096 ± 0.027 0.413 ± 0.240 0.011 ± 0.002
Rm 0.109 ± 0.000 23.702 ± 0.002 0.022 ± 0.014 0.109 ± 0.015 0.990 ± 0.656 0.018 ± 0.001

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