Conditional flux sampling of respiration events using stable isotopes

Investigators bmM

Matthias Zeeman, Christoph Thomas

Other investigators

Alexander Knohl, Patrick Sturm, Nina Buchmann

Objective(s)

We investigate to what extend conditional flux analysis can benefit from the addition of stable isotope information (Figure 1). Stable isotopes have been recognized for their potential as process tracer, and could add an extra dimension to the conditional flux (CF) concept as recently proposed and evaluated by Thomas et al. (2008, AFM) and Scanlon & Sahu (2008, WRR). The CF concept aims at directly quantifying component carbon fluxes, identifying their sources, and improving our understanding of air transport in plant canopies.