FIGURE 6.

Increasing giant kelp biomass was associated with (a) a linear increase in annual net primary productivity (NPP) by the total macroalgal community and (b) an exponential reduction in annual NPP by understory macroalgae. Values obtained from different treatments are distinguished by different symbols and colours. Shaded boxes highlight observations in annual and quarterly disturbance plots of (a) relatively high total NPP resulting from (b) very high understory NPP. Note differences in the scale of y‐axes between panels. Lines and shading as in Figure 2