论文标题
大型微生物生态系统动力学中的自由密度和相关性波动
Scale free density and correlations fluctuations in the dynamics of large microbial ecosystems
论文作者
论文摘要
微生物在非常大的社区中自组织，表现出复杂的波动。尽管最近进步，但仍未完全解释这些系统能够一方面表现出很大的可变性和动态鲁棒性的机制。有了这一动机，我们在这里分析了微生物群和浮游生物动力学的三个方面：密度波动，相关结构和雪崩动力学。在研究的所有社区中，我们发现结果表现出无标度的密度波动，异常差异的规模，无尺度的丰度相关性和固定的无标度雪崩动力学。这些行为在表现出关键动态的系统中典型的行为提出了批判性，作为一种潜在的机制，可以解释在非常大的微生物群落中观察到的鲁棒性和（矛盾的）高规则性。
Microorganisms self-organize in very large communities exhibiting complex fluctuations. Despite recent advances, still the mechanism by which these systems are able to exhibit large variability at the one hand and dynamical robustness on the other, is not fully explained. With that motivation, here we analyze three aspects of the dynamics of the microbiota and plankton: the density fluctuations, the correlation structure and the avalanching dynamics. In all communities under study we find that the results exhibits scale-free density fluctuations, anomalous variance' scaling, scale-free abundance correlations and stationary scale-free avalanching dynamics. These behaviors, typical in systems exhibiting critical dynamics, suggest criticality as a potential mechanism to explain both the robustness and (paradoxical) high irregularity of processes observed in very large microbial communities.
