2009
DOI: 10.1590/s1677-04202009000300001
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Photosynthetic capacity of three phytoplanktonic species measured by a pulse amplitude fluorometric method

Abstract: During photosynthesis, absorbed energy that is not used in photochemical reactions dissipates as fluorescence. Fluorescence provides important information on the physiological conditions of the studied organisms and its measurement is widely used by plant physiologists and can be valuable in phytoplankton studies. We describe a method adapting a plant fluorometric equipment to measure the photosynthetic capacity of microalgae. Unialgal cultures of three planktonic chlorophytes were exposed to 3(3,4-dichlorophe… Show more

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Cited by 4 publications
(1 citation statement)
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“…Fm´-F × PAR × 0.5 Fm (2) where Fm´-F/Fm is the photochemical yield in the light, PAR is the photosynthetically active irradiation, 0.5 is a multiplicative factor used because only half of the absorbed quanta are distributed to the Photosystem II (Figueredo et al, 2009).…”
Section: Traits Measurementmentioning
confidence: 99%
“…Fm´-F × PAR × 0.5 Fm (2) where Fm´-F/Fm is the photochemical yield in the light, PAR is the photosynthetically active irradiation, 0.5 is a multiplicative factor used because only half of the absorbed quanta are distributed to the Photosystem II (Figueredo et al, 2009).…”
Section: Traits Measurementmentioning
confidence: 99%