José Grünzweig (@josegruenzweig.bsky.social)

Photosynthetic optimum temperature plays a minor role in the increase of terrestrial carbon uptake from 2000 to 2019 Recent increases in terrestrial carbon uptake are often assumed to reflect thermal acclimation. Using global eddy-covariance and satellite observations, Xu et al. show that maximum ecosystem photosynthesis increased without a global rise in optimum temperature. Instead, stomatal regulation and canopy development played larger roles, especially under dryness, suggesting that future land carbon projections must go beyond thermal acclimation alone. http://dlvr.it/TSQmZZ