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Table 3 The responses (P values) of absolute and relative growth, mortality, and net biomass change to atmospheric CO2 (CO2), mean annual temperature anomaly (ATA) and standardized precipitation evapotranspiration index (SPEI), drainage class, and forest age

From: Climate change-associated trends in biomass dynamics are consistent across soil drainage classes in western boreal forests of Canada

Fixed effects Biomass gain from growth (Mg ha−1 year−1) Biomass loss from mortality (Mg ha−1 year−1) Net biomass change (Mg ha−1 year−1) Biomass gain from growth (% year−1) Biomass loss from mortality (% year−1) Net biomass change (% year−1)
Atmospheric carbon dioxide concentration
D 0.094 0.002 0.017 0.017 0.035 <0.001
f(A) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
CO 2 0.008 <0.001 <0.001 <0.001 <0.001 <0.001
D × f(A) 0.976 <0.001 <0.001 <0.001 0.005 <0.001
D × CO 2 0.066 0.158 0.032 <0.001 0.490 <0.001
f(A) × CO 2 0.046 0.683 0.974 <0.001 0.055 0.002
Annual temperature anomaly
D 0.122 0.003 0.030 0.073 0.051 <0.001
f(A) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
ATA 0.373 0.002 0.002 0.006 0.009 <0.001
D × f(A) 0.889 <0.001 <0.001 <0.001 0.015 <0.001
D × ATA 0.336 0.882 0.877 <0.001 0.747 0.100
f(A) × ATA 0.086 0.036 0.207 <0.001 0.001 0.867
Standardized precipitation-evapotranspiration index
D 0.138 0.004 0.027 0.044 0.046 <0.001
f(A) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
SPEI 0.114 0.021 0.006 0.159 0.005 0.004
D × f(A) 0.517 <0.001 <0.001 0.001 0.002 <0.001
D × SPEI 0.179 0.650 0.618 0.041 0.582 0.065
f(A) × SPEI 0.337 0.010 0.026 <0.001 0.048 0.020
  1. f(A) represents the natural logarithm of forest age for absolute rates and the inverse of the natural logarithm of forest age for relative rates