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Periodic solutions and almost periodic solutions of a neutral multispecies logarithmic population model. (English) Zbl 1089.92039
Summary: A neutral multispecies logarithmic population model is proposed. By using the contraction mapping principle and constructing a suitable Lyapunov functional, a set of easily applicable criteria is established for the existence, uniqueness and global attractivity of positive periodic solutions (positive almost periodic solution) of the model.
##### MSC:
 92D25 Population dynamics (general) 34C25 Periodic solutions of ODE 34D23 Global stability of ODE 34C60 Qualitative investigation and simulation of models (ODE) 37N25 Dynamical systems in biology 34C27 Almost and pseudo-almost periodic solutions of ODE 34D05 Asymptotic stability of ODE