Fig. 2.

Remaining mass at the end of the study period (day 182) in relation to carbon to nutrient ratios of the original material. a C/N, b C/P, c C/K and C/Na, and d C/Ca and C/Mg. Notation: a and b Galenia africana (filled dots), renosterbos Elythropappus rhinocerotis (filled triangles) and Watsonia borbonica (open squares); c and d as above for K and Ca, while for Na and Mg the dots are connected by lines, and G. africana (open dot), E. rhinocerotis (open triangle) and W. borbonica (filled square), Standard error bars are smaller than the dots