栖息地丧失的捕食者-猎物系统中的图灵模式

IF 1.6 4区 物理与天体物理 Q3 PHYSICS, CONDENSED MATTER The European Physical Journal B Pub Date : 2024-11-10 DOI:10.1140/epjb/s10051-024-00815-z
Ramya Seenivasan, Prosenjit Paul
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引用次数: 0

摘要

在本研究中,我们探讨了受栖息地丧失影响的捕食者-猎物模型中出现的空间模式,并结合了线性扩散的影响。通过雅各布矩阵检验系统的稳定性,我们利用分析和数值方法得出了霍普夫分岔和图灵分岔的发生条件。数值模拟得出了霍普夫分岔图,揭示了系统对不同条件的动态响应。我们的研究结果有助于理解栖息地丧失和采伐如何影响捕食者-猎物系统的空间动态,而捕食者-猎物系统是由通量边界条件下的偏微分方程(PDEs)描述的。我们还研究了捕猎导致的栖息地丧失对空间模式的影响,确定了捕猎变化导致的斑点和条纹等形态。我们通过分析推导出图灵不稳定性的条件,并通过数值验证予以确认。
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Turing patterns in exploited predator–prey systems with habitat loss

In this study, we explore the emergence of spatial patterns in a predator–prey model influenced by habitat loss, incorporating the effects of linear diffusion. By examining the stability of the system through the Jacobian matrix, we derive conditions for the occurrence of both Hopf and Turing bifurcations using analytical and numerical approaches. Numerical simulations yield Hopf bifurcation diagrams, revealing the system’s dynamic responses to varying conditions. Our findings contribute to the understanding of how habitat loss and harvesting affect the spatial dynamics in predator–prey systems, which are described by partial differential equations (PDEs) under flux boundary conditions. We also investigate the impact of habitat loss due to harvesting on spatial patterns, identifying formations such as spots and stripes as a result of changes in harvesting efforts. We analytically derive the conditions for Turing instability, which are confirmed through numerical validation.

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来源期刊
The European Physical Journal B
The European Physical Journal B 物理-物理:凝聚态物理
CiteScore
2.80
自引率
6.20%
发文量
184
审稿时长
5.1 months
期刊介绍: Solid State and Materials; Mesoscopic and Nanoscale Systems; Computational Methods; Statistical and Nonlinear Physics
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