Figure 1. Distribution map of Quercus variabilis stands sampled across eastern China.

The number of location can be found in the supplementary materials (Table S1). Solid circles represent soil and leaf sampling sites (yellow circles sampled in 2009, red circles sampled in 2007–2009, and blue circles sampled in 2008–2009), and the green solid triangles represent acorn and weevil larva sampling sites in 2009.