Fig. 3
Aboveground biomass productivity of a Chilean Mediterranean-type matorral explained by four ecological mechanisms. Legend: Mechanisms hypothesized are: vegetation quantity (a, b, c); mass-ratio (d, e, f, g); soil resources availability (h, i, j, k, l) and niche complementarity (m, n, o). Similar to Conti and Díaz (2013) we show the changes of AGBP as function of abiotic and biotic variables across different types of matorral (see Fig. 2). The pairwise relationships of AGBP with pi of Q. saponaria, pi of L. caustica, silt (%) and clay (%) are shown in Additional file 1: Online Resource 4