Population dynamics with and without selection.
Population dynamics with and without selection.
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有选择和无选择的人口动态。
DOI：
10.1103/physreve.63.031903
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
K. Sznajd
中科院分区：
文献类型：
--
作者：
A. Pękalski;K. Sznajd
提出了一个描述种群动态的模型。我们研究了选择压力和近亲繁殖对种群时间演化和生存机会的影响。我们发现，选择一般是有益的，使生存的人口规模正在下降。近亲繁殖减少了生存的机会，因为它导致了个体的聚集。我们还发现，与生物学数据一致，种群的初始规模以及栖息地都有一个阈值，低于这个阈值，种群几乎肯定会灭绝。我们提出了分析和计算机模拟的方法。
A model describing population dynamics is presented. We study the effect of selection pressure and inbreeding on the time evolution of the population and the chances of survival. We find that the selection is in general beneficial, enabling survival of a population whose size is declining. Inbreeding reduces the survival chances since it leads to clustering of individuals. We have also found, in agreement with biological data, that there is a threshold value of the initial size of the population, as well as of the habitat, below which the population will almost certainly become extinct. We present analytical and computer simulation approaches.