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. 2005 Dec 9;102(51):18502–18507. doi: 10.1073/pnas.0505966102

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Copyright © 2005, The National Academy of Sciences

Freely available online through the PNAS open access option.

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Fig. 4. — Distribution of tree ages (stem·ha^-1 ± SD) in permanent plots in Manaus (a), Santarém (c), and Rio Branco (b). Ages are based on the Monte Carlo extrapolation of dendrometer-based growth rates for the three different size classes used: 0.65 times the standard deviation of the lognormal distribution when randomly assigning growth rates, minimum growth rate cutoff was 0.02 cm·yr^-1 (a); 1.0 times the standard deviation of the lognormal distribution when randomly assigning growth rates, minimum growth rate cutoff was 0.02 cm·yr^-1 (b); and 0.65 times the standard deviation of the lognormal distribution, minimum growth rate cutoff was 0.04 cm·yr^-1 (c).