Figure 5. Papyrus canopy light extinction profile. (i) Penetration of light in the canopy profile. Measured values shown as filled circles and predicted values shown as a line, (ii) The modelled decline in the proportion of sunlit (direct beam) leaf area (F_sun) with depth into the canopy. Filled circles indicate calculated points, lines are interpolated between points. (iii) A diagrammatic vertical cross section of a typical papyrus stand at Lake Naivasha