论文
论文标题：Emergent coexistence in multispecies microbial communities
作者：Chang-Yu Chang, Djordje Bajić, Jean C. C. Vila, Sylvie Estrela, Alvaro Sanchez
期刊：Science
发表时间：2023/07/21
数字识别码：10.1126/science.adg0727
摘要：
Understanding the mechanisms that maintain microbial biodiversity is a critical aspiration in ecology. Past work on microbial coexistence has largely focused on species pairs, but it is unclear whether pairwise coexistence in isolation is required for coexistence in a multispecies community. To address this question, we conducted hundreds of pairwise competition experiments among the stably coexisting members of 12 different enrichment communities in vitro. To determine the outcomes of these experiments, we developed an automated image analysis pipeline to quantify species abundances. We found that competitive exclusion was the most common outcome, and it was strongly hierarchical and transitive. Because many species that coexist within a stable multispecies community fail to coexist in pairwise co-culture under identical conditions, we concluded that multispecies coexistence is an emergent phenomenon. This work highlights the importance of community context for understanding the origins of coexistence in complex ecosystems.
摘要翻译（由计算机程序完成，仅供参考，内容以英文原文为准）：
了解维持微生物生物多样性的机制是生态学的一个重要愿望。过去关于微生物共存的工作主要集中在物种对上，但尚不清楚在多物种群落中共存是否需要隔离的成对共存。为了解决这个问题，我们在体外对12个不同富集群落的稳定共存成员进行了数百次成对竞争实验。为了确定这些实验的结果，我们开发了一个自动图像分析管道来量化物种丰度。我们发现竞争排斥是最常见的结果，它具有很强的等级性和传递性。由于在一个稳定的多物种群落中共存的许多物种无法在相同条件下成对共同培养，我们得出结论，多物种共存是一种新出现的现象。这项工作强调了社区背景对理解复杂生态系统中共存起源的重要性。
