Fig. 2
From: Tree regeneration characteristics in limestone forests of the Cat Ba National Park, Vietnam
Sunflower graph of the number of threatened tree species per plot in the overstory and regeneration layers. Each petal in a sunflower point represents a threatened species that was recorded in overstory and regeneration layers; thus, more petals show more plots with a similar observation. The black line is the 1:1 line. Black dots indicate that only one observation occurred in overstory or regeneration layers