Tandon Kshitij, Yang Shan-Hua, Wan Min-Tao, Yang Chia-Chin, Baatar Bayanmunkh, Chiu Chih-Yu, Tsai Jeng-Wei, Liu Wen-Cheng, Tang Sen-Lin
Biodiversity Research Center, Academia Sinica.
Bioinformatics Program, Institute of Information Science, Taiwan International Graduate Program, Academia Sinica.
Microbes Environ. 2018 Jul 4;33(2):120-126. doi: 10.1264/jsme2.ME17148. Epub 2018 Apr 21.
Very few studies have attempted to profile the microbial communities in the air above freshwater bodies, such as lakes, even though freshwater sources are an important part of aquatic ecosystems and airborne bacteria are the most dispersible microorganisms on earth. In the present study, we investigated microbial communities in the waters of two high mountain sub-alpine montane lakes-located 21 km apart and with disparate trophic characteristics-and the air above them. Although bacteria in the lakes had locational differences, their community compositions remained constant over time. However, airborne bacterial communities were diverse and displayed spatial and temporal variance. Proteobacteria, Actinobacteria, Bacteroidetes, and Cyanobacteria were dominant in both lakes, with different relative abundances between lakes, and Parcubacteria (OD1) was dominant in air samples for all sampling times, except two. We also identified certain shared taxa between lake water and the air above it. The results obtained on these communities in the present study provide putative candidates to study how airborne communities shape lake water bacterial compositions and vice versa.
尽管淡水水源是水生生态系统的重要组成部分，且空气传播的细菌是地球上最易扩散的微生物，但很少有研究试图描绘淡水水体（如湖泊）上方空气中的微生物群落。在本研究中，我们调查了两个相距21公里、营养特征不同的高山亚高山山地湖泊水体及其上方空气中的微生物群落。尽管湖泊中的细菌存在位置差异，但其群落组成随时间保持不变。然而，空气传播的细菌群落具有多样性，并表现出空间和时间上的差异。变形菌门、放线菌门、拟杆菌门和蓝细菌在两个湖泊中均占主导地位，湖泊之间的相对丰度不同，除两次采样外，其他所有采样时间的空气样本中奇古菌门（OD1）均占主导地位。我们还确定了湖水与其上方空气之间的某些共有分类群。本研究中关于这些群落的结果为研究空气传播群落如何塑造湖水细菌组成以及反之亦然提供了假定的候选对象。
