Beverton and Holt's Yield per Recruit Model

In 1957 R. J. H. Beverton and S. J. Holt published their seminal work on the dynamics of exploited fish populations. The work includes individual growth models of von Bertalanffy, mortality models of Baranov, and a number of other methods to describe population dynamics. The most famous model presented in the work of Beverton and Holt is the simple yield per recruit model, presenting the sustainable yield of a fish population as a function of age of first catch , assuming knife-sharp selection and rate of fishing mortality . The weight-length-relation is assumed to be close to 3 (cubic relation) and the natural mortality rate is in most cases close to the natural individual growth rate .