arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2204.09798q-bio.PEcond-mat.stat-mechnlin.AOnlin.PSphysics.bio-ph
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剪刀石头布模型中的迁移率不均匀性

Mobility unevenness in rock-paper-scissors models

J. Menezes, S. Rodrigues, S. Batista

摘要:

我们研究了一个三营养系统,其循环优势的石头剪刀布游戏。我们认为,一个或两个物种的生物体受到运动限制,这不平衡的循环空间游戏。进行随机模拟,我们表明,流动性不均匀控制的种群动力学。在一种慢物种的情况下,主要物种取决于流动性限制的水平,如果流动性限制很大,则慢物种占优势。如果两个物种面临流动性限制,我们的结果表明,更高的分散性并不构成人口增长方面的优势。相反,如果生物体以更高的机动性移动,它们会更频繁地暴露在敌人面前,更容易被消灭。最后,我们的研究结果表明,生物多样性在物种减少的地区受益。循环系统中常见的高流动性生物的生物多样性丧失可以避免,因为由于强流动性限制,共存可能性更高。我们的研究结果可能有助于生物学家理解不平衡空间系统的动态,其中生物的扩散是生物多样性保护的基础。

英文摘要:

We investigate a tritrophic system whose cyclic dominance is modelled by the rock-paper-scissors game. We consider that organisms of one or two species are affected by movement limitations, which unbalances the cyclic spatial game. Performing stochastic simulations, we show that mobility unevenness controls the population dynamics. In the case of one slow species, the predominant species depends on the level of mobility restriction, with the slow species being preponderant if the mobility limitations are substantial. If two species face mobility limitations, our outcomes show that being higher dispersive does not constitute an advantage in terms of population growth. On the contrary, if organisms move with higher mobility, they expose themselves to enemies more frequently, being more vulnerable to being eliminated. Finally, our findings show that biodiversity benefits in regions where species are slowed. Biodiversity loss for high mobility organisms, common to cyclic systems, may be avoided with coexistence probability being higher for robust mobility limitations. Our results may help biologists understand the dynamics of unbalanced spatial systems where organisms' dispersal is fundamental to biodiversity conservation.

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