Fig. S9. Shifts in peak elevation (cm) and abundance (fold change) for the 46 taxa we modelled with HMSC, arranged by functional group and then individual trends in occurrence. Points are median shifts across 1,000 posterior samples (shown in Figure 2C), and errors bars are 50% (thick bars) and 95% CIs (thin bars). We constrained our predictions to the surveyed elevation range (61 to 382 cm above MLLWLT), creating a few situations where upper 95% credible limits for peak elevation shifts were exactly zero (e.g., Egregia menziesii , Ulva ,Halosaccion glandiforme ). We do not consider these shifts to be significantly different from zero. Taxa are arranged from the greatest cover loss over time to greatest cover increases, first by functional group (colors as in Fig. 2) and then by taxa within functional groups.