Dubrovskaia Victoria, St. Petersburg Institute for Informatics and Automation of RAS (39, 14-line Str., 199178 Saint-Petersburg, Russia)

Perevaryukha Andrey, St. Petersburg Institute for Informatics and Automation of RAS (39, 14-line Str., 199178 Saint-Petersburg, Russia)

Soloveva Inna, St. Petersburg Institute for Informatics and Automation of RAS (39, 14-line Str., 199178 Saint-Petersburg, Russia)

Language: russian


The article by comparing the actual situation with the possible modes of behavior known population models from observational data identified a number of inconsistencies that can not be removed by a simple redefinition of the parameters. The origin of cycles of periods 2 degree at doubling bifurcation involves a fundamentally different points of the tab order than the pronounced cycles of Arctic populations. We observed flashes aperiodic dynamics of insect pests differs from the well-known scenario of chaos, which in addition to Cantor attractor involves a number of additional properties in the motion path that is difficult to interpret in biology. It is proposed to achieve the quality of conformity carried out the implementation of the price explainable nonlinear effects with the use of trigger functional. Accounting for seemingly minor factor, which is expressed in an additional point of inflection reproduction can lead to other conclusions about the properties of population dynamics. Analysis of catch statistics for the models must take into account the presence of subpopulation groups. Influence of reproductive isolation of local groups discussed the example of these spawning odd / even flocks of pink salmon populations and for the Caspian Sea russian and persian sturgeon Acipenser persicus.

Key words:

population models, cycles, bifurcation, Allee effect, reproductive isolation, fish subpopulations


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