Sites | Stem frequency, stem·ha^{–1} | Biomass C, Mg·ha^{–1} | C added through annual diameter increment at stand level, Mg·ha^{–1}·year^{–1} | Mean residence time, years | Mean biomass (C) age, years | Mean tree age, years | Percent of trees >300 years old | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Manaus | 626 | 180 | 1.9 | 95 | 109* | 119† | 92‡ | 381* | 422† | 297‡ | 50* | 50† | 45‡ |
Rio Branco | 466 | 95 | 2.6 | 37 | 89* | 103† | 76‡ | 279* | 332† | 219‡ | 32* | 38† | 27‡ |
Santarém | 460 | 141 | 2.6 | 54 | 63* | 80† | 59‡ | 195* | 255† | 153‡ | 18* | 27† | 17‡ |
From biomass/C storage rate.
↵ * Used 0.65 times the standard deviation of the lognormal distribution (as in ref. 39) when randomly assigning growth rates; minimum growth rate cutoff was 0.02 cm·yr^{–1}
↵ † Used 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}
↵ ‡ Used 0.65 times the standard deviation of the lognormal distribution; minimum growth rate cutoff was 0.04 cm·yr^{–1}