Fig. 3: The effects of the precipitation and mean temperature of the warmest quarter on the proportion of annuals (among herbaceous species).
From: Revising the global biogeography of annual and perennial plants
a, The proportion of annuals in each ecoregion. b, The predictions of a linear regression model of annual proportion as a function of precipitation and mean temperature of the warmest quarter with contour lines every 5%. n = 682.
