Multiple distinct, scale‐dependent links between fungi and decomposition
Multiple distinct, scale‐dependent links between fungi and decomposition
复制标题
真菌和分解之间存在多种不同的、规模相关的联系
DOI：
10.1111/ele.13749
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发表时间：
2021
期刊：
影响因子：
8.8
通讯作者：
Bardgett, ed., Richard
中科院分区：
文献类型：
--
作者：
Smith, Gabriel Reuben;Peay, Kabir G.;Bardgett, ed., Richard
分解历来被认为是气候和底物的函数，但新的研究强调了特定微生物及其相互作用的重要作用。特别是，真菌群落的变化比气候变化更能预测木材腐烂。存在多个联系：种间竞争减缓了更多样化真菌群落的分解，而不同群落之间的特征差异也影响了加工速度。在这里，我们使用森林-灌木交错带的扩散梯度进行现场和实验室实验，以检查真菌如何影响木材在不同尺度上的分解。我们观察到，虽然靠近森林的真菌群落能够更快地分解，但含有多样化真菌群落的木材分解较慢，与位置无关。小规模群落集聚中的扩散驱动随机性嵌套在区域物种库的大规模更替中，使两种格局解耦。因此，我们发现微生物和生态系统功能之间存在多种不同的联系，这种联系体现在不同的空间尺度上。
Decomposition has historically been considered a function of climate and substrate but new research highlights the significant role of specific micro‐organisms and their interactions. In particular, wood decay is better predicted by variation in fungal communities than in climate. Multiple links exist: interspecific competition slows decomposition in more diverse fungal communities, whereas trait variation between different communities also affects process rates. Here, we paired field and laboratory experiments using a dispersal gradient at a forest‐shrubland ecotone to examine how fungi affect wood decomposition across scales. We observed that while fungal communities closer to forests were capable of faster decomposition, wood containing diverse fungal communities decomposed more slowly, independent of location. Dispersal‐driven stochasticity in small‐scale community assembly was nested within large‐scale turnover in the regional species pool, decoupling the two patterns. We thus find multiple distinct links between microbes and ecosystem function that manifest across different spatial scales.