摘要翻译：
利用无序系统理论中的动力学技术研究了一个模型生态系统。该模型描述了一组物种通过它们赖以生存的资源背景进行竞争相互作用。此外，物种之间的直接竞争或合作相互作用可能通过随机耦合矩阵发生。我们计算了系统在不动点区域的序参量，识别了不稳定的起始点并计算了相图。我们着重研究了资源的变异性、物种间的直接相互作用、合作压力和稀释对生态系统稳定性和多样性的影响。研究表明，只有在物种间没有合作压力或直接相互作用的情况下，资源才能得到最优的开发利用。
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英文标题：
《Statistical mechanics and stability of a model eco-system》
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作者：
Yoshimi Yoshino, Tobias Galla, Kei Tokita
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最新提交年份：
2007
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分类信息：

一级分类：Quantitative Biology        数量生物学
二级分类：Populations and Evolution        种群与进化
分类描述：Population dynamics, spatio-temporal and epidemiological models, dynamic speciation, co-evolution, biodiversity, foodwebs, aging; molecular evolution and phylogeny; directed evolution; origin of life
种群动力学；时空和流行病学模型；动态物种形成；协同进化；生物多样性；食物网；老龄化；分子进化和系统发育；定向进化；生命起源
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一级分类：Physics        物理学
二级分类：Disordered Systems and Neural Networks        无序系统与神经网络
分类描述：Glasses and spin glasses; properties of random, aperiodic and quasiperiodic systems; transport in disordered media; localization; phenomena mediated by defects and disorder; neural networks
眼镜和旋转眼镜；随机、非周期和准周期系统的性质；无序介质中的传输；本地化；由缺陷和无序介导的现象；神经网络
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一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
  We study a model ecosystem by means of dynamical techniques from disordered systems theory. The model describes a set of species subject to competitive interactions through a background of resources, which they feed upon. Additionally direct competitive or co-operative interaction between species may occur through a random coupling matrix. We compute the order parameters of the system in a fixed point regime, and identify the onset of instability and compute the phase diagram. We focus on the effects of variability of resources, direct interaction between species, co-operation pressure and dilution on the stability and the diversity of the ecosystem. It is shown that resources can be exploited optimally only in absence of co-operation pressure or direct interaction between species.
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PDF链接：
https://arxiv.org/pdf/705.1523