A major challenge in ecology is to understand how different species interact to determine ecosystem function, particularly in communities with large numbers of co‐occurring species. We use a trait‐based model of microbial litter decomposition to quantify how different taxa impact ecosystem function. Furthermore, we build a novel framework that highlights the interplay between taxon traits and environmental conditions, focusing on their combined influence on community interactions and ecosystem function. Our results suggest that the ecosystem impact of a taxon is driven by its resource acquisition traits and the community functional capacity, but that physiological stress amplifies the impact of both positive and negative interactions. Furthermore, net positive impacts on ecosystem function can arise even as microbes have negative pairwise interactions with other taxa. As communities shift in response to global climate change, our findings reveal the potential to predict the biogeochemical functioning of communities from taxon traits and interactions.

中文翻译：

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微生物相互作用对生态系统功能的影响在压力下加剧


生态学的一个主要挑战是了解不同物种如何相互作用以确定生态系统功能，尤其是在具有大量共存物种的群落中。我们使用基于性状的微生物凋落物分解模型来量化不同分类群如何影响生态系统功能。此外，我们构建了一个新的框架，突出了分类群特征和环境条件之间的相互作用，重点关注它们对群落相互作用和生态系统功能的综合影响。我们的结果表明，一个分类群对生态系统的影响是由其资源获取特征和群落功能能力驱动的，但生理压力放大了积极和消极相互作用的影响。此外，即使微生物与其他分类群有负面的成对相互作用，也可能对生态系统功能产生净积极影响。随着群落为响应全球气候变化而发生变化，我们的研究结果揭示了从分类群特征和相互作用预测群落生物地球化学功能的潜力。