What limits photosynthesis? Identifying the thermodynamic constraints of the terrestrial biosphere within the Earth system.

  title={What limits photosynthesis? Identifying the thermodynamic constraints of the terrestrial biosphere within the Earth system.},
  author={Axel Kleidon},
  journal={Biochimica et biophysica acta. Bioenergetics},
  • A. Kleidon
  • Published 2020
  • Physics, Medicine, Environmental Science
  • Biochimica et biophysica acta. Bioenergetics
Photosynthesis converts sunlight into the chemical free energy that feeds the Earth's biosphere, yet at levels much lower than what thermodynamics would allow for. I propose here that photosynthesis is nevertheless thermodynamically limited, but this limit acts indirectly on the material exchange. I substantiate this proposition for the photosynthetic activity of terrestrial ecosystems, which are notably more productive than the marine biosphere. The material exchange for terrestrial… Expand

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