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The relationship between leaf toughness (work-to-shear and specific work-to-shear, both plotted on a log scale) and tannin activity (measured as protein precipitation) for rainforest and maquis species in New Caledonia. Kwongan species in south-western Australia are included in (A). Each data point is the mean of 3–5 replicate plants. The line of best fit is shown for each vegetation type (derived by Model 1 regression).
