Fig. 5From: Collapse of an iconic conifer: long-term changes in the demography of Widdringtonia cedarbergensis using repeat photographyMean annual temperature (°C) in Clanwilliam from 1963 to 2010. The solid line represents a piecewise regression with an estimated breakpoint in 1996. The dashed lines represent 95% confidence intervals. R2 values and significance levels are attachedBack to article page