modèle Pella-Tomlinson

CONT: Targets and thresholds derived from biomass dynamic models are almost completely predetermined by the choice of model structure and the values for carrying capacity and intrinsic growth rate. ... the Pella-Tomlinson model [is] somewhat more flexible, because [it adds] parameters to describe how the growth rate changes with respect to stock size. But the values for targets and thresholds in the Pella-Tomlinson model are no less sensitive to errors and biases in carrying capacity or intrinsic growth rate than the more common-dependent models.