Nocturnal stomatal conductance and implications for modelling δ18O of leaf-respired CO2 in temperate tree species.

  title={Nocturnal stomatal conductance and implications for modelling $\delta$18O of leaf-respired CO2 in temperate tree species.},
  author={Margaret M. Barbour and Lucas A. Cernusak and David Whitehead and Kevin L. Griffin and Matthew H. Turnbull and David T. Tissue and Graham D. Farquhar},
  journal={Functional plant biology : FPB},
  volume={32 12},
Variation in the oxygen isotope composition of within-canopy CO2 has potential to allow partitioning of the ecosystem respiratory flux into above- and below-ground components. Recent theoretical work has highlighted the sensitivity of the oxygen isotope composition of leaf-respired CO2 (δRl) to nocturnal stomatal conductance. When the one-way flux model was tested on Ricinus communis L. large enrichments in δRl were observed. However, most species for which the isotope flux partitioning… 

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