Posterior means and 95% credible intervals of scaling exponents (<i>b</i>) at different hierarchical levels.

<p>Symbols correspond to the species and the large diamond represents the interspecific, global-level scaling exponent. 95% credible intervals are shown as vertical lines on means. The levels along the x-axis refer to levels in the hierarchical Bayesian model. The horizontal lines represent the theoretical predictions of the three scaling models (note that in D MST and GEOM make the same prediction, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0058241#pone-0058241-t001" target="_blank">Table 1</a>). Species codes are as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0058241#pone-0058241-g001" target="_blank">Figure 1</a>. AG mass = aboveground mass.