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Table 3 Summary of model II (reduced major axis) regressions of log10- root productivity (y) and root biomass (x) by root sizes. n is the number of samplings. Slopes statistically greater or smaller than 1 (p < 0.05) are indicated by boldface font

From: Testing allometric scaling relationships in plant roots

Root sizes Intercept 95% CI intercept Slope 95% CI slope r2 n
< 1 mm 0.123 0.106 ~ 0.139 0.914 0.803 ~ 1.041 0.539 109
1–2 mm −0.227 − 0.298 ~ –0.164 1.009 0.901 ~ 1.129 0.745 81
> 2 mm − 0.178 − 0.241 ~ –0.123 0.878 0.784 ~ 0.986 0.361 190
All −0.075 − 0.103 ~ –0.047 0.856 0.796 ~ 0.920 0.486 380