Fig. 4
From: Recovery of Sphagnum from drought is controlled by species-specific moisture thresholds
Variation in relative CO2 flux (difference in NEE between recovering microcosms and control microcosms) from two Sphagnum species (S. palustre, (a), and S. squarrosum, (b) following rewetting after drought. Within each species, the recovery from different length of drought is indicated by coloured symbols and regression lines (blue = D1, red = D3, green = D4, brown = D5). Regressions follow the same formula as Fig. S3; y = initial flux * ex + final flux). The zero line represents the rate of NEE in controls; fluxes above this (positive fluxes) indicate increased loss of CO2 from Sphagnum and fluxes below (negative fluxes) indicate increase uptake of CO2. Fluxes are means ± 1SD and the regression line fitted is a negative exponential, formulae in the top right of the panel.
