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After all, to saturate something is to fill it to capacity; ... There is only one level of saturation - saturation ;). To me it sounds like you are debating (but mostly agreeing) the minimum concentration of CO2 needed to NOT be a limiting factor during photosynthesis (with respect to light intensity, flowrate, etc).
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www.plantedtank.net/forums/general-planted-tank-discuss...
www.plantedtank.net/forums/general-planted-tank-discussion/21609-co2-revelations-part-2-a-5-print.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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The photosynthesis rate is r4(:); ² A proportion of the ... Now we will use the available biological knowledge to estimate the reaction rates with respect to the state variables and to the light intensity I: r1: The nitrate uptake rate is classically repre-sented by a Monod kinetics (Dugdale, 1967): r1(») = ½m;
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www-sop.inria.fr/comore/projets/sempo/phytoifac.pdf
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Figure 3. Light response (net photosynthesis rate) of systemically oviposition-induced (black squares) twigs of Scots pine and untreated controls (white squares) at day 1 to day 3 (A–C). ... Both treated and control twigs significantly raised their net photosynthetic rates with increasing light intensity (Fig. 3). However,
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www.plantphysiol.org/cgi/content/full/138/1/470
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Several groups have addressed the issue of transient changes in light intensity and how such changes affect photosynthesis (14, 17). The transients involve the ... Tim Ball and Joe Berry (1) generalized this finding and effectively produced a succinct relationship between stomatal conductance and rate of photosynthesis.
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www.plantphysiol.org/cgi/content/full/125/1/42
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Trees vary with respect to the light intensity at which maximum photosynthesis occurs. The rate of photosynthesis of loblolly pine increases with increasing light intensity up to full sunlight.
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www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2/the_...
www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2/the_tree_and_its/environment.htm
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Air temperature in each OTC was measured with a thermocouple and light intensity on the top of an OTC was measured with a light sensor (LI-190SA, ... Aj is the photosynthetic rate limited by RuBP regeneration. Ci, is the CO2 concentration at which photosynthesis was co-limited by RuBP carboxylation and RuBP regeneration,
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jxb.oxfordjournals.org/cgi/content/full/56/412/755
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3. Rate of photosynthesis as a function of light intensity. A, low tempera- ture curve; B. high temperature curve. FIG. 4. Variation in rate of photosynthesis with temperature at high light inten- sities for N~tzschia closterium (O) and Niteschia palea (my.
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books.nap.edu/openbook.php?record_id=9565&page=117
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With increasing temperature, the level of CO2 required to saturate photosynthesis, and the level required to observe the transient response to low O2, increased. With increasing light intensity, the terminal stimulation of photosynthesis by low O2 decreased up to 800 PPFD and remained constant thereafter.
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abstracts.aspb.org/pb1997/public/P53/0734.shtml
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