随机种群动态对食物网结构的影响。
The effects of stochastic population dynamics on food web structure.
作者信息
Powell Craig R, Boland Richard P
机构信息
Theoretical Physics Group, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK.
出版信息
J Theor Biol. 2009 Mar 7;257(1):170-80. doi: 10.1016/j.jtbi.2008.11.006. Epub 2008 Nov 17.
We develop a stochastic, individual-based model for food web simulation which in the large-population limit reduces to the well-studied Webworld model, which has been used to successfully construct model food webs with several realistic features. We demonstrate that an almost exact match is found between the population dynamics in fixed food webs, and that the demographic fluctuations have systematic effects when the new model is used to construct food webs due to the presence of species with small populations.
我们开发了一种基于个体的随机食物网模拟模型，在种群数量很大的极限情况下，该模型可简化为经过充分研究的网络世界模型，该模型已被成功用于构建具有若干现实特征的模型食物网。我们证明，在固定食物网中的种群动态之间发现了几乎精确的匹配，并且当使用新模型构建食物网时，由于存在小种群物种，种群统计学波动具有系统性影响。
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