13C-discrimination during microbial respiration of added C3-, C4- and 13C-labelled sugars to a C3-forest soil

@article{Ekblad200213CdiscriminationDM,
  title={13C-discrimination during microbial respiration of added C3-, C4- and 13C-labelled sugars to a C3-forest soil},
  author={Alf Ekblad and Gert Nyberg and Peter H{\"o}gberg},
  journal={Oecologia},
  year={2002},
  volume={131},
  pages={245-249}
}
We tested whether 13C-discrimination during microbial respiration, or during CO2 sampling in the field, can explain changes observed in the δ13C of emitted CO2 that follow the addition of C4-sucrose, as a microbial substrate, to the soil of a C3-ecosystem. We approached this problem by adding C3-glucose (δ13C=–23.4‰), C4-sucrose (–10.8‰) or 13C-labelled… CONTINUE READING

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