Fig. 4From: Dispersal and adaptation strategies of the high mountain butterfly Boloria pales in the Romanian CarpathiansNet Birth rate and rate of proportional recruitment (pent) and of B. pales calculated with POPAN 5.0 in the program MARK. Red trend line for weighted mean value of pent (third-degree polynomic function); blue trend line for weighted mean value of Net Birth (third-degree polynomic function)Back to article page