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Fig. 1. Forest floor C pools of old-growth forests of the Pacific Northwest. Each bar represents a forest and is the average of 1 to 8 pedons (see Table 2). Pooled within-forest coefficient of variation (CV) is 77%. With n = 4 pedons per forest, a ratio of a higher mean to a lower mean >2.8 indicates two forests are significantly different, based on ANOVA of log-transformed values followed by the LSD test (
= 0.05); exact cutoff value of ratios differs among pairs of forests because of different numbers of pedons at different forests.
