Terrestrial biosphere models may overestimate Arctic CO 2 assimilation if they do not account for decreased quantum yield and convexity at low temperature

Here, we measured the effect of temperature on the response of photosynthesis to irradiance in six Arctic plant species and determined the quantum yield of CO 2 fixation (Φ CO2 ) and the convexity factor (θ). We also determined leaf absorptance (α) from measured reflectance to calculate Φ CO2 on an...

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Bibliographic Details
Published in:New Phytologist
Main Authors: Rogers, Alistair, Serbin, Shawn P., Ely, Kim S., Wullschleger, Stan D.
Language:unknown
Published: 2023
Subjects:
54 ENVIRONMENTAL SCIENCES
Arctic
Online Access:http://www.osti.gov/servlets/purl/1494999
https://www.osti.gov/biblio/1494999
https://doi.org/10.1111/nph.15750
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Summary:Here, we measured the effect of temperature on the response of photosynthesis to irradiance in six Arctic plant species and determined the quantum yield of CO 2 fixation (Φ CO2 ) and the convexity factor (θ). We also determined leaf absorptance (α) from measured reflectance to calculate Φ CO2 on an absorbed light basis (Φ CO2.a ) and enable comparison with nine TBMs.

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