Fig. 3. Emission of CO₂ from moss tissue subjected to fertilization and/or a single drying/rewetting cycle (expressed in kg/kg of the dry moss tissue, after 20 h of incubation). Treatments are: C, control (continuously moist); F, fertilized moss (continuously moist); D, moss dried before the experiment; FD, moss fertilized and dried before the experiment (n = 12). Error bars indicate 1 SE.