风流和全球变暖对捕食者-捕食者动态模型的影响

Q3 Mathematics
Ashraf Adnan Thirthar , Shireen Jawad , Salam J. Majeed , Kottakkaran Sooppy Nisar
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引用次数: 0

摘要

猎物与捕食者之间的相互作用是生态学最重要的内容之一。本文研究了一个猎物-捕食者系统的动力学,在该系统中,猎物和捕食者种群因全球变暖而导致出生率下降,风流也会对它们产生影响。在提出潜在平衡点存在的结论之前,研究了该系统的良好假设性。这里还得出了存在不同数量内部平衡点的条件。重要的是,当正平衡点稳定时,这对生态系统、其连续性和持久性都有积极的影响。已确定的条件是,当全球变暖和风速等环境影响因素存在时,生态系统免于灭绝的条件。此外,还围绕所有平衡点进行了局部稳定性研究,并建立了发生跨临界分岔和霍普夫分岔的横向性标准。通过改变猎物的全球变暖效应,在数值上说明了不同平衡点的存在,同时从数学角度展示了模型的动态特性。对于大量的全球变暖,我们注意到该系统表现出周期性行为。因此,生态学家可以借助当前的研究,近似地计算必要的参数,以研究并获得有关非线性系统的重要发现。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of wind flow and global warming in the dynamics of prey–predator model

Prey–predator interaction is among the most crucial aspects of ecology. In this paper, the dynamics of a prey–predator system in which the prey and predator populations experience a birth rate reduction due to global warming and the wind flow effect on them are investigated. The system’s well-posedness before presenting findings about the existence of potential equilibrium points is studied. Conditions under which a different number of interior equilibria exist are also derived here. It is very important to know that when the positive equilibrium point is stable, this reflects positively on the ecosystem, its continuity and persistence. The conditions that have been identified are conditions that preserve the ecosystem from extinction when environmental influences such as global warming and wind speed are present. In addition, the local stability study around all equilibrium points and established the transversality criteria for the occurrence of transcritical bifurcations and Hopf bifurcations is conducted. The existence of different equilibrium points numerically by altering the prey’s global warming effect is illustrated , also showcasing the model’s dynamic character from a mathematical perspective. For significant amounts of global warming, its notice that the system exhibits periodic behavior. Thus, ecologists can approximate the parameters necessary to investigate and obtain such crucial findings regarding nonlinear systems with the aid of the current study.

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来源期刊
Results in Control and Optimization
Results in Control and Optimization Mathematics-Control and Optimization
CiteScore
3.00
自引率
0.00%
发文量
51
审稿时长
91 days
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