Fig. 2.
The relationship between respiration Y and mass M for (A) aboveground parts and (B) whole plants, including the roots. Respiration, measured as the net CO2 efflux under dark conditions, was temperature adjusted to 20 °C, assuming a standard Q 10 = 2. The relationship between ln Y and ln M was fitted to Eq. 2 using a nonlinear least-squares approach.