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As light intensity is increased, eventually an intensity is reached above which light no longer is the factor limiting the overall rate of photosynthesis.
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www.marietta.edu/~spilatrs/biol103/photolab/saturati.ht...
www.marietta.edu/~spilatrs/biol103/photolab/saturati.html
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Work based on response of phytoplankton suggests that the intensity of light at this level, i.e., 1 percent of the surface light, represents the compensation light intensity at which photosynthesis and plant respiration are in balance.
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www.aquabotanic.com/paper2-6.html
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(a) Light: The rate of photosynthesis increases with increase in the intensity of light. However, extremely high intensitites of light do not increase the rate of photosynthesis. Optimum light intensity for photosynthesis varies with the species of the plant.
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www.nos.org/bio12/b2h13.1.htm
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At normal atmospheric CO2 concentration (300 ppm), photosynthesis of both varieties was light saturated at about 21,530 lux. At a CO2 concentration of 1670 ppm, photosynthesis was not light saturated in either variety at the highest light intensity tested (75,350 lux).
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crop.scijournals.org/cgi/content/abstract/7/5/451
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But, as the light intensity decreases the rate of photosynthesis goes down. Eventually, a light intensity is reached where the rates of photosynthesis and respiration are equal; this is called the light compensation point.
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generalhorticulture.tamu.edu/lectsupl/Light/light.html
generalhorticulture.tamu.edu/lectsupl/Light/light.html
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The process of integrating a Higher Plant Chamber (HPC) in the MELiSSA Pilot Plant demands reliable data on crop photosynthetic responses to varying light intensity. ... The data have application to the further development of models of canopy photosynthesis within the MELiSSA framework.
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www.sae.org/technical/papers/2005-01-3071
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Over a range of moderate temperatures and at low to medium light intensities (relative to the normal range of the plant species), the rate of photosynthesis increases as the intensity increases and is independent of temperature.
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www.britannica.com/EBchecked/topic/458172/photosynthesi...
www.britannica.com/EBchecked/topic/458172/photosynthesis/60557/Factors-that-influence-the-rate-of-photosynthesis
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Glycollic acid production by Chlorella was measured by colorimetric determination of the acid excreted into the medium. ... The production of the acid became measurable at light intensities approaching that required to saturate photosynthesis and increased steadily with further increase in intensity.
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stinet.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=h...
stinet.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=AD0271578
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Individual leaves of full sun plants may light saturate at 2000-3000 ft-c, but they can tolerate intensities of 8000 to 10,000 ft-c. In contrast, leaves of shade plants light saturate at a lower intensity, 500 to 1000 ft-c. Shade plants have much less tolerance of full sun so steps must be taken to regulate light...
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www.ag.auburn.edu/landscape/lightintensityquality.html
www.ag.auburn.edu/landscape/lightintensityquality.html
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