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Environmental periodicity and time delays in a “food-limited” population model. (English) Zbl 0701.92021
Summary: Sufficient conditions are obtained for the existence of a globally attracting positive periodic solution of the food-limited population system modelled by the equation $$ \dot N(t)=r(t)((K(t)-N(t- m\omega))/(K(t)+c(t)r(t)N(t-m\omega))), $$ where m is a nonnegative integer and K,r,c are continuous, positive, periodic functions of period $\omega$.

MSC:
92D40Ecology
34C25Periodic solutions of ODE
34K99Functional-differential equations
92D25Population dynamics (general)
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References:
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