论文题目：Linking regional species pool size to dispersal-selection relationships in soil fungal communities across terrestrial ecosystems
论文作者：Beibei Chen, Haibo Pan, XiaofengSong, Yajun Yao, Jiejun Qi, Xiaoli Bai, Ziheng Peng, Yu Liu, Shi Chen, Hang Gao, Chunling Liang, Jiai Liu, Jiamin Gao, Gehong Wei* and Shuo Jiao*
论文摘要：
Explicitly considering regional species pools can help to understand community assembly rules, because it plays a bridging role in elucidating how community patterns are coupled at local and regional scales. By conducting the nationwide soilsurvey from various ecosystems across China, we examined the linkage between regional species pool size and DSRs, and their relationship to fungal community structure. We found significantly negative dispersal-selection relationships in all four ecosystems. Additionally,regional species pool size was negatively related to dispersal-selection relationships. In other words, the slope of the dispersal-selection relationships become steeper with increasing regional species pool size, suggesting that the regional species pool regulates the balance between dispersal and selection in community assembly.The strengthening of the dispersal-selection relationship significantly increased the dispersion of fungal communities.This study clearly illustrates the crucial role of regional species pools in community assembly rules and extends the species-pool framework to microbial community ecology.
明确考虑区域物种库对于理解群落组装规则至关重要，因为它在阐明生物群落如何在区域和局部尺度上耦合起到了桥梁作用。本研究对不同生态系统的土壤样本进行采集，探究区域物种库大小与扩散-选择关系之间的联系及其对真菌群落结构的影响。研究结果表明，区域物种库与扩散-选择关系的强度呈显著负相关，即随着区域物种库大小的增加，扩散-选择关系的斜率变得更加陡峭，说明区域物种库调节扩散与选择在群落组装中的平衡。扩散-选择关系的增强显著增加了真菌群落的离散度。本研究在大尺度上阐明了区域物种库在群落构建规则中的关键作用，并将物种库框架拓展至微生物群落生态学领域。
论文链接：https://doi.org/10.1111/geb.13876