Response to Comment on "Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees".

Zani, Deborah; Crowther, Thomas W; Mo, Lidong; Renner, Susanne S; Zohner, Constantin M · Science · 2021

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Abstract

Our study showed that increases in seasonal productivity drive earlier autumn senescence of temperate trees. Norby argues that this finding is contradicted by observations from free-air CO<sub>2</sub> enrichment (FACE) experiments, where elevated CO<sub>2</sub> has been found to delay senescence in some cases. We provide a detailed answer showing that the results from FACE studies are in agreement with our conclusions.

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