Fig. 2
From: Axial diffusion of respired CO2 confounds stem respiration estimates during the dormant season
Profiles of stem CO2 efflux (EA) measured with a stem cuvette on oak1 when light was excluded from the entire tree (Ref) and when woody tissue photosynthesis was induced in 10-cm-long stem sections remote from the site of EA measurement by illuminating either S10 (5–15 cm from the stem cuvette), S20 (15–25 cm from the stem cuvette), S30 (25–35 cm from the stem cuvette, grey triangles) or S40 (35–45 cm from the stem cuvette). EA data are 5-min averages. Beginning and end of illumination periods are indicated by black boxes and dashed lines. Data of oak2 is included as appendix (Fig. 5)