COMPARISON FOR TWO REGULATION TYPES OF GROWTH OF A SIMPLE AGE STRUCTURE POPULATION
The effects of the following modes of density-dependent control of population growth: density-dependent adult survival rate, juvenile survival rate are compared based on the mathematical model of population dynamics. It is shown that the most efficient mechanisms limiting population size are the decreasing survival rate of the offspring with the increase in their number. However, these same mechanisms are responsible for oscillations of the population size and its chaotic change. The density-dependence of the adult survival rate is not efficient in constraining the population growth, but it can substantially limit the magnitude of oscillations of the population size.