Neutral assembly of bacterial communities
Neutral assembly of bacterial communities
复制标题
DOI：
10.1111/j.1574-6941.2007.00379.x
复制
发表时间：
2007-11-01
影响因子：
4.2
通讯作者：
Sloan, William T.
中科院分区：
文献类型：
--
作者：
Woodcock, Stephen;van der Gast, Christopher J.;Sloan, William T.
最近，生态学的两个独立的进展引起了人们的兴趣和争议：中性群落模型（NCMs）的发展和微生物世界的地理关系的扩展。在这里，这两个进步是通过使用NCM预测观察到的微生物类群-体积关系来联系起来的，并为任何宏观或微观生物群中的中性群落组装提供了迄今为止最有力的证据。在此之前，国家协调机制仅在单个地点或一个尺度上使用大型生物的物种-丰度分布进行拟合，参数值则根据具体情况进行校准。由于NCM预测了一个可延展的双参数类群丰度分布，这是一个弱测试的中性社区组装，因此，NCM的预测能力。在这里，NCM的两个参数进行校准使用的类群丰度分布中观察到的一个小的水生细菌群落中的树皮内衬树洞山毛榉树。使用这些参数，不变，类群-丰度分布和类群-体积的关系，观察到在其他26个山毛榉树社区的大小跨越三个数量级可以预测。在这样做的同时，一个简单的定量生态机制来解释微生物生态学的观察，并证明了NCM的预测能力。
Two recent, independent advances in ecology have generated interest and controversy: the development of neutral community models (NCMs) and the extension of biogeographical relationships into the microbial world. Here these two advances are linked by predicting an observed microbial taxa-volume relationship using an NCM and provide the strongest evidence so far for neutral community assembly in any group of organisms, macro or micro. Previously, NCMs have only ever been fitted using species-abundance distributions of macroorganisms at a single site or at one scale and parameter values have been calibrated on a case-by-case basis. Because NCMs predict a malleable two-parameter taxa-abundance distribution, this is a weak test of neutral community assembly and, hence, of the predictive power of NCMs. Here the two parameters of an NCM are calibrated using the taxa-abundance distribution observed in a small waterborne bacterial community housed in a bark-lined tree-hole in a beech tree. Using these parameters, unchanged, the taxa-abundance distributions and taxa-volume relationship observed in 26 other beech tree communities whose sizes span three orders of magnitude could be predicted. In doing so, a simple quantitative ecological mechanism to explain observations in microbial ecology is simultaneously offered and the predictive power of NCMs is demonstrated.