 The model can be used to predict the number of fish that will be present in a fishery.Subsequent work has derived the model under other assumptions such as scramble competition, within-year resource limited competition or even as the outcome of source-sink Malthusian patches linked by density-dependent dispersal.The Ricker model is a limiting case of the Hassell model which takes the form

When "c" = 1, the Hassell model is simply the Beverton–Holt model.