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Change of dynamic regimes in the population of species with short life cycles: Results of an analytical and numerical study

机译:生命周期短的物种种群动态机制的变化:分析和数值研究的结果

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摘要

There is a phenomenon of multiregimism found in the elementary mathematical model of population dynamics, meaning the possibility for different dynamic regimes to exist under the same conditions, with transition to these regimes dependent on the initial numerical values. The effect in question comes into existence in the model which has several different limiting regimes (attractors): equilibrium, regular fluctuations, and chaotic attractor. The revealed phenomenon of multiregimism lets us explain the initiation of fluctuations as well as disappearance of fluctuations. Adequacy of the model's dynamic regimes is depicted by their correlation with the actual dynamics of population size of bank vole (Myodes glareolus). It is shown that the impact of climatic factors on a reproductive process of a population noticeably extends the range of possible dynamic regimes and, in fact, leads to random migration over attraction basins of these regimes. (C) 2016 Elsevier B.V. All rights reserved.
机译:在人口动力学的基本数学模型中发现了一种多区域主义现象,这意味着在相同条件下存在不同动态机制的可能性,而过渡到这些机制取决于初始数值。所讨论的效应在模型中存在,该模型具有几种不同的限制机制(吸引子):平衡,规则波动和混沌吸引子。揭示的多重制度主义现象让我们解释了波动的起因以及波动的消失。模型的动态机制与银行田鼠(Myodes glareolus)种群大小的实际动态之间的相关性描述了模型的动态性。研究表明,气候因素对种群繁殖过程的影响显着扩大了可能的动态机制的范围,并且实际上导致了这些机制的吸引盆地上的随机迁移。 (C)2016 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Ecological Complexity》 |2016年第9期|2-11|共10页
  • 作者单位

    Russian Acad Sci, Far Eastern Branch, Inst Complex Anal Reg Problems, 4 Sholom Aleihem St, Birobidjan 679016, Russia;

    Russian Acad Sci, Far Eastern Branch, Inst Complex Anal Reg Problems, 4 Sholom Aleihem St, Birobidjan 679016, Russia|Russian Acad Sci, Far Eastern Branch, Inst Automat & Control Proc, 5 Radio St, Vladivostok 690041, Russia;

    Russian Acad Sci, Far Eastern Branch, Inst Complex Anal Reg Problems, 4 Sholom Aleihem St, Birobidjan 679016, Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Population dynamics; Density-dependent regulation; Multistability; Attraction basins; Bifurcations;

    机译:种群动态;依赖密度的调节;稳定性;吸引盆地;分叉;

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