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Figure 1. Monthly averages of daily photon flux, day and nighttemperatures and monthly precipitation at the study site in Turrialba,Costa Rica, from December 1991 through November 1992.
Table 1. Average metabolic respiration rate ±the night respiration measurements. Means followed by the same letter within a column are not significantly different (Duncan’s multiple range SD at leaf temperatures of 20 and 24 °C in mature leaves of Erythrina poeppigiana, calculated fromtest at 5%).
Figure 2. Top: Assimilation rate as a function of photon flux densityin mature leaves of Clone 2660 of (300 tion rate as a function of ambient COdensities of 310 (represents the estimate by Equation 8 at ambient COrepresent observations on different leaves
Table 2. Parameter values with 95% confidence interval for the rectangular hyperbolae describing the dependence of assimilation rate on ambientCOflux density and CO2 concentration and incident photon flux density in mature leaves of Erythrina poeppigiana; Equation 8 adjusted to data on the effects of photon2 concentration.
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