Anthropogenic climate warming affects many biological systems, ranging in scale from microbiomes to biomes. In many animals, warming-related fitness depression appears more closely linked to changes in ecological community interactions than to direct thermal stress. This biotic community framework is commonly applied to warming studies at the scale of ecosystems but is rarely applied at the scale of microbiomes. Here, we used replicated bromeliad microecosystems to show warming effects on tadpole gut microbiome dysbiosis mediated through biotic community interactions. Warming shifted environmental bacteria and arthropod community composition, with linkages to changes in microbial recruitment that promoted dysbiosis and stunted tadpole growth. Tadpole growth was more strongly associated with cascading effects of warming on gut dysbiosis than with direct warming effects or indirect effects on food resources. These results suggest that assessing warming effects on animal health requires an ecological community perspective on microbiome structure and function.

人为气候变暖影响许多生物系统，范围从微生物群落到生物群落。在许多动物中，与变暖有关的适度抑郁似乎与生态群落相互作用的变化更紧密地联系在一起，而不是与直接的热应激联系紧密。这种生物群落框架通常应用于生态系统规模的升温研究，但很少应用于微生物群落规模。在这里，我们使用了复制的凤梨科微生态系统，以显示通过生物群落相互作用介导的on肠道微生物组营养不良的变暖效应。气候变暖改变了环境细菌和节肢动物的群落组成，与微生物募集的变化有关联，微生物的募集促进了营养不良和and的生长受阻。growth的生长与加温对肠道菌群失调的级联效应相比，与直接变暖或对食物资源的间接效应更密切相关。这些结果表明，评估变暖对动物健康的影响需要微生物群落结构和功能的生态群落观点。