Figure 2
From: Bumble bees exhibit body size clines across an urban gradient despite low genetic differentiation
Thorax widths of worker bumble bees (Bombus spp.) across the urban gradient in the greater Saint Louis region. Sites are arranged from left to right by increasing distance from Saint Louis City. Asterisks (*) indicate statistically significant differences between means of intraspecific subpopulations following Bonferroni correction (i.e., p < 0.00278). CC Calvary Cemetery, CW Castlewood State Park, ED EarthDance Farms, SNR Shaw Nature Reserve.
