Figure 2. Measured fluxes of CO2 at the plot scale along a
gradient of planted species richness in various removal treatments. A)
Ecosystem respiration, B) Gross primary productivity and C) Net
ecosystem exchange of C (mean +/- 1 s.e.m) in micromoles of CO2 per
square meter per second. Negative values of NEE indicate net capture of
carbon whereas positive values indicate net release.