Figure 4

Plots of work versus temperature gradient for all functional groups and sites. Power functions are fit to the data: \(W=a(\Delta T/\Delta z)^b\). Parameter b is reported in the upper right corner of each plot. For each site LAI increases in each functional group scenario from left to right in the legend at the bottom (i.e. UN has the smallest LAI and MG has the largest—see Fig. S2 in the Supplementary Information). Trends in b indicate that power increases with LAI among functional groups and is the largest in the MG scenario for all sites except the SRM-UN scenario. A few values corresponding to negative temperature gradients are removed from the WCR scenario since they are a function of the presence of snow rather than self-organization.