Impact of vigilance on the density variations in a food chain model

IF 3.1 3区环境科学与生态学 Q2 ECOLOGY

Ecological Complexity Pub Date : 2022-06-01 DOI:10.1016/j.ecocom.2022.100996

Mainul Hossain , Shilpa Garai , Sarbari Karmakar , Nikhil Pal , Joydev Chattopadhyay

引用次数: 3

Abstract

Anti-predator behavior in the form of vigilance greatly influences the dynamics of a predator-prey system. In the present work, we investigate the impact of prey vigilance in a three-species food chain model where both prey and middle predator use vigilance as a survival strategy in the presence of their respective predators. We present basic mathematical results such as local and global stability, bifurcation behavior of the system. We explore the variation of the densities of the populations in different bi-parameter spaces and observe that vigilance plays a crucial role in the survival and extinction of the populations.

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警惕对食物链模型中密度变化的影响

警觉形式的反捕食者行为极大地影响了捕食者-猎物系统的动力学。在目前的工作中，我们研究了三种食物链模型中猎物警惕的影响，其中猎物和中间捕食者在各自的捕食者存在时都使用警惕作为生存策略。给出了系统的局部稳定性、全局稳定性、分岔行为等基本数学结果。我们探讨了不同双参数空间中种群密度的变化，并观察到警惕在种群的生存和灭绝中起着至关重要的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ecological Complexity 环境科学-生态学

CiteScore

7.10

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Ecological Complexity is an international journal devoted to the publication of high quality, peer-reviewed articles on all aspects of biocomplexity in the environment, theoretical ecology, and special issues on topics of current interest. The scope of the journal is wide and interdisciplinary with an integrated and quantitative approach. The journal particularly encourages submission of papers that integrate natural and social processes at appropriately broad spatio-temporal scales. Ecological Complexity will publish research into the following areas: • All aspects of biocomplexity in the environment and theoretical ecology • Ecosystems and biospheres as complex adaptive systems • Self-organization of spatially extended ecosystems • Emergent properties and structures of complex ecosystems • Ecological pattern formation in space and time • The role of biophysical constraints and evolutionary attractors on species assemblages • Ecological scaling (scale invariance, scale covariance and across scale dynamics), allometry, and hierarchy theory • Ecological topology and networks • Studies towards an ecology of complex systems • Complex systems approaches for the study of dynamic human-environment interactions • Using knowledge of nonlinear phenomena to better guide policy development for adaptation strategies and mitigation to environmental change • New tools and methods for studying ecological complexity