Shade Cover and Shade Tree Densities. Shade varied from 15% in the most open agroforests to 76% in the most shaded, with an average at 45%. Densities of Grevillea robusta and native shade trees differed at plot and agroforest scales due to uneven distribution of trees within agroforests (Fig. S1). On the basis of data collected from the 113 agroforests we estimated shade tree species richness across a range of agroforest areas (Fig. S2).