Superdiffusivity due to resource depletion in random searches

Berbert Juliana M.; Lewis Mark A.

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Superdiffusivity due to resource depletion in random searches

机译：随机搜索中资源枯竭导致的超扩散

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Animal search patterns are governed by the various movement strategies undertaken when animals encounter stimuli. The stimuli caused by resource growth and depletion can modify search patterns due to the need to finding resources. In this paper, we investigate the influence of resource depletion on the dynamics of dispersal of a population which is related to diffusion or anomalous diffusion. Our approach is to develop a population level model using partial differential equations that takes into account rules for movement based on the resource levels. Through numerical analysis, we show that the population dispersal patterns depend on the resource depletion, with superdiffusive spread in cases where the depletion rate (as given by high consumption and low replenishment) is high. This has the potential to increase searching efficiency. (C) 2017 Elsevier B.V. All rights reserved.

机译：动物的搜寻方式受动物遇到刺激时采取的各种运动策略的控制。由资源增长和枯竭引起的刺激可以由于需要寻找资源而修改搜索模式。在本文中，我们研究了资源耗竭对与扩散或反常扩散有关的种群扩散动态的影响。我们的方法是使用偏微分方程来开发人口水平模型，该模型考虑了基于资源水平的移动规则。通过数值分析，我们表明人口扩散模式取决于资源的消耗，在消耗率（由高消耗和低补给引起）高的情况下，具有超扩散扩散。这有可能提高搜索效率。（C）2017 Elsevier B.V.保留所有权利。

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来源
《Ecological Complexity》 |2018年第1期|41-48|共8页
作者
Berbert Juliana M.; Lewis Mark A.;
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作者单位

Univ Fed ABC, Ctr Matemat Comp & Cognicao, Santo Andre, SP, Brazil;

Univ Alberta, Dept Biol Sci, Dept Math & Stat Sci, Edmonton, AB, Canada;

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原文格式 PDF
正文语种 eng
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关键词
Animal movement; Resource depletion; Diffusion equations; Anomalous diffusion;

机译：动物运动;资源枯竭;扩散方程;异常扩散;

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Superdiffusivity due to resource depletion in random searches

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