Seminar: Juliane Helm

Trees emit CO2 through their stems, which substantially contribute to the tree and whole ecosystem carbon (C) budget. A growing number of studies have shown that CO2 diffusion to the atmosphere does not reflect the respiratory activity of the underlying tissues and that many aspects of tree stem C dynamics are still unknown. During this presentation, I will explain the underlying uncertainties in tree stem C dynamics and how to address them. I will provide answers to the following questions: What can cause the mismatch between CO2 efflux and stem respiration? Can internal transport of CO2 away from the production site and storage of CO2 in the stem close this gap? Our results can help improving estimations of tree and ecosystem C fluxes.

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In unserer wöchentlichen Vortragsreihe wechseln sich eingeladene Wissenschaftler aus internationalen Forschungsinstituten (Kolloquien) mit unseren internen Wissenschaftlern ab (interne Seminare - diese Reihe), die über die Fortschritte ihrer Forschungsprojekte berichten. Eingeladene Gäste unserer lokalen akademischen Partner sind zu den Kolloquien herzlich willkommen.