Figure 5From: Diversification across an altitudinal gradient in the Tiny Greenbul (Phyllastrephus debilis) from the Eastern Arc Mountains of AfricaBiplot of the first two components of the bioclimatic variables extracted from our sampling locality co-ordinates. Note the rather disparate environmental conditions for the albigula sampling points. All sites where gene flow was recorded (e.g. Mt. Kanga) are characterized by reduced seasonality (variable 4).Back to article page