Diverse communities of fungi and bacteria in deadwood mediate wood decay. While rates of decomposition vary greatly among woody species and spatially distinct habitats, the relative importance of these factors in structuring microbial communities and whether these shift over time remains largely unknown. We characterized fungal and bacterial diversity within pieces of deadwood that experienced 6.3–98.8% mass loss while decaying in common garden ‘rotplots’ in a temperate oak‐hickory forest in the Ozark Highlands, MO, USA. Communities were isolated from 21 woody species that had been decomposing for 1–5 years in spatially distinct habitats at the landscape scale (top and bottom of watersheds) and within stems (top and bottom of stems). Microbial community structure varied more strongly with wood traits than with spatial locations, mirroring the relative role of these factors on decay rates on the same pieces of wood even after 5 years. Co‐occurring fungal and bacterial communities persistently influenced one another independently from their shared environmental conditions. However, the relative influence of wood construction versus spatial locations differed between fungi and bacteria, suggesting that life history characteristics of these clades structure diversity differently across space and time in decomposing wood.

中文翻译：

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与经过5年腐烂的空间位置相比，木结构对死木微生物群落的影响更大。

枯木中的各种真菌和细菌群落介导了木材的腐烂。尽管木本物种和不同生境的分解率差异很大，但这些因素在构建微生物群落中的相对重要性以及这些因素是否随时间推移仍是未知之数。我们对美国密苏里州奥扎克高地温带橡木山核桃林中常见的花园“腐烂图”中腐烂的，质量损失达6.3–98.8％的枯木中的真菌和细菌多样性进行了表征。社区是从21种木本植物中分离出来的，这些木本植物在景观尺度（流域的顶部和底部）和茎干（茎的顶部和底部）中在空间上不同的栖息地中分解了1-5年。木材性状的微生物群落结构变化远大于空间位置，反映了这些因素对同一块木材腐烂率的相对作用，即使5年后也是如此。共同存在的真菌和细菌群落持续不断地相互影响，而不受共同环境条件的影响。然而，真菌和细菌之间木材结构相对于空间位置的相对影响是不同的，这表明这些进化枝的生活史特征在分解木材时跨空间和时间的多样性不同。