ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)


Mechanisms leading to bursting oscillations in the system of predator–prey communities coupled by migrations

The purpose is to study the periodic regimes of the dynamics for two non-identical predator–prey communities coupled by migrations, associated with the partial synchronization of fluctuations in the abundance of communities. The combination of fluctuations in neighboring sites leads to the regimes that include both fast bursts (bursting oscillations) and slow oscillations (tonic spiking). These types of activity are characterized by a different ratio of synchronous and non-synchronous dynamics of communities in certain periods of time.

Механизмы формирования пачечной динамики в системе миграционно связанных сообществ типа хищник-жертва

Цель работы – изучение периодических режимов динамики миграционно связанных неидентичных сообществ типа хищник-жертва, возникающих при частичной синхронизации колебаний их численностей. Комбинация этих колебаний приводит к образованию режимов динамики, объединяющих в себе как быстрые всплески численностей (пачечная динамика), так и медленные релаксационные колебания (тоническая динамика), которые характеризуются различным соотношением синхронной и несинхронной динамики в определенные периоды времени.

Synchronizing the period-­2 cycle in the system of symmetrical coupled populations with stock–recruitment based on the Ricker population model

We investigated coupled map lattices based on the Ricker model that describes the spatial dynamics of heterogeneous populations represented by two connected groups of individuals with a migration interaction between them. Bifurcation mechanisms in­phase and antiphase synchronization of multistability regimes were considered in such systems. To identify a synchronization mode we introduced the quantitative measure of synchronization.