Fig. 3: Net carbon flux in stormwater ponds based on sediment burial and gaseous emission.

A comparison of median C flux (blue circles, CO2–C + CH4–C) as positive values and median OC burial rate (brown circles) as negative values. The net C flux (g C m−2 y1) in stormwater ponds is shown by the red circles and line and represents the difference between gas flux and burial. Bars on points indicate the 5th and 95th quantiles.