Figure 2: Evidence for linkages between biodiversity and ES.
From: Disaggregating the evidence linking biodiversity and ecosystem services
Top row: all relationships for each of four ES reviewed (that is, pooling all linkage types; G-test, G=19.96, degrees of freedom (d.f.)=6, P=0.003, n=163). Right column: all relationships for each linkage type (that is, pooling all ES; G-test, G=1.57, d.f.=4, P=0.814, n=163). Pie charts are scaled such that their areas (not radii) are proportional to the number of relationships. Colours depict the sign of the reported relationship: blue=positive; red=negative; yellow=not significant. See Fig. 1 for description of three linkage types, and see Supplementary Table 1 for data in tabular form.
