Abstract
The CO2 gas exchange rates of the Central European perennial understory plantAsarum europaeum L. were measured in late autumn (October 30 to November 30) in its natural habitat day and night.
During these measurements the temperature ranged from 0 to 15°C and the absolute air humidity from 3 to 10 mg H2O·1−1. Temperature and absolute air humidity over these ranges did not affect CO2 net assimilation which was determined almost entirely by quantum flux density.
CO2 net assimilation was light saturated at about 100 μM·m−2·s−1 quantum flux density. The uptake rate at this point was 4.3 mg·dm−2·h−1. The compensation point occurred at approximately 1 μM·m−2·s−1.
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Overdieck, D. CO2 gas exchange of the understory plantAsarum europaeum L. in November. Int J Biometeorol 29, 57–65 (1985). https://doi.org/10.1007/BF02189007
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DOI: https://doi.org/10.1007/BF02189007