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论文类型：期刊论文

发表时间：2016-06-01

发表刊物：ECOLOGICAL COMPLEXITY

收录刊物：SCIE、Scopus

卷号：26

页面范围：117-127

ISSN号：1476-945X

关键字：Predator prey dynamics; Mean field theory; Monte Carlo simulation; Predator group dynamics

摘要：The grouping behavior is common in nature, e.g., fish school, bird flocks and insects swarms. Indeed, numerous theoretical and empirical predator-prey models have demonstrated the impact of group-living animals on ecosystems. To examine the interactions between individuals in the same group or competition between groups, we introduced different models based on Monte Carlo simulation and mean-field theory and found that the predator group sizes follow the geometric distribution and logarithmic distribution, as in previous empirical and theoretical cases. Our models also provide an intuitive explanation for these distributions. A new distribution based on the Holling-III functional response is presented; this distribution is heavy tailed in some specific cases. (C) 2016 Elsevier B.V. All rights reserved.