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The influence of irradiance on the apparent photosynthetic quotient in the unicellular alga Pycnococcus provasolii
Iriarte, A. (1999). The influence of irradiance on the apparent photosynthetic quotient in the unicellular alga Pycnococcus provasolii. Cah. Biol. Mar. 40(1): 29-33
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094, more
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    Marine/Coastal
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  • Iriarte, A.
Abstract
    The influence of irradiance on the apparent photosynthetic quotient (PQ) was studied for cultures of the unicellular alga Pycnococcus provasolii. The apparent PQ was in the range 0.7 to 4.2. and two trends of variation with irradiance were apparent: a) PQ's decreased with increasing incubation irradiance above saturation levels; b) At any given incubation irradiance PQ's were generally higher for algae grown at higher irradiances. Possible explanations to these patterns are discussed. It is suggested that variations of PQ in phytoplankton can partly be due to mechanisms related to photoacclimatization.
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