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2022-03-08
摘要翻译:
将天然轮虫种群动态模型描述为依赖于反映种群和环境特征的三个参数的离散非线性映射。用分岔理论的方法研究了模型动力学及其随参数变化的变化规律。建立了该模型的相位参数画像,识别并研究了种群持久性(稳定平衡、种群规模的周期振荡和A-周期振荡)以及种群灭绝的区域。描述了种群持久性的准则和确定临界参数值的方法。结果确定了在各种环境条件下导致种群灭绝的参数值。它们进一步说明,环境质量的微小变化可以大大增加灭绝的可能性,这将种群转移到新的动态状态。
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英文标题:
《Modeling the dynamics of natural rotifer populations: phase-parametric
  analysis》
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作者:
Faina S. Berezovskaya, Georgy P. Karev, and Terry W. Snell
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最新提交年份:
2005
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分类信息:

一级分类:Quantitative Biology        数量生物学
二级分类:Subcellular Processes        亚细胞过程
分类描述:Assembly and control of subcellular structures (channels, organelles, cytoskeletons, capsules, etc.); molecular motors, transport, subcellular localization; mitosis and meiosis
亚细胞结构(通道、细胞器、细胞骨架、囊膜等)的组装和控制;分子马达;转运;亚细胞定位;有丝分裂和减数分裂
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一级分类:Quantitative Biology        数量生物学
二级分类:Other Quantitative Biology        其他定量生物学
分类描述:Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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英文摘要:
  A model of the dynamics of natural rotifer populations is described as a discrete nonlinear map depending on three parameters, which reflect characteristics of the population and environment. Model dynamics and their change by variation of these parameters were investigated by methods of bifurcation theory. A phase-parametric portrait of the model was constructed and domains of population persistence (stable equilibrium, periodic and a-periodic oscillations of population size) as well as population extinction were identified and investigated. The criteria for population persistence and approaches to determining critical parameter values are described. The results identify parameter values that lead to population extinction under various environmental conditions. They further illustrate that the likelihood of extinction can be substantially increased by small changes in environmental quality, which shifts populations into new dynamical regimes.
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PDF链接:
https://arxiv.org/pdf/q-bio/0505045
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