Table C1. Spearman rank correlation coefficients for correlations of non-extrapolated
50 and 95% rooting depths (D50 and D95)
with environmental variables (see Table 3 in the paper for definitions of variables).
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All temperate and boreal (n = 335; organic
layer: n = 315)
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Temperate and boreal forests (n = 149; organic
layer: n = 132)
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Temperate and boreal grass- and shrublands & savannas
(n = 186; organic layer: n = 183)
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All tropical (n = 135; organic layer: n
= 130)
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Tropical forests (n = 86; organic layer: n
= 82)
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Tropical grass- and shrublands and savannas (n
= 49)
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Notes: Coefficients marked in boldface are statistically significant at P < 0.01; those marked in bold italics are significant at P < 0.05. Significance levels were not adjusted for multiple comparisons.
Table C2. Spearman rank correlation coefficients for correlations of rooting depths with environmental variables (see Table 3 in paper for definitions of variables).
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Non-extrapolated profiles (n = 96; organic layer:
n = 94)
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Extrapolated profiles (n = 374; organic layer:
n = 351)
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Notes: Listed are the coefficients for non-extrapolated 50 and 95% rooting depths (D50 and D95) of profiles sampled to the maximum rooting depth or to at least 2 m depth and the coefficients for extrapolated 50 and 95% rooting depths (Dx50 and Dx95) profiles sampled to less than 2 m depth. Coefficients marked in boldface are statistically significant at P < 0.01; those marked in bold italics are significant at P < 0.05. Significance levels were not adjusted for multiple comparisons.