Fig. 3
From: Recovery of Sphagnum from drought is controlled by species-specific moisture thresholds

Relationship between length of drought period and fluxes of CO2 from two Sphagnum species (S. palustre, blue symbols and regression line, and S. squarrosum, red symbols and regression line), one week after rewetting. CO2 fluxes are net ecosystem exchange (NEE). With negative flux indicating sink of CO2 from the air and positive fluxes release.