Tibetan lake bacteria Metagenome. Tibetan lake bacteria

The free-living (FL) and particle-attached (PA) bacteria have different dispersal potentials and ecological roles in aquatic ecosystems. However, our knowledge of their diversity and regional biogeographical patterns in high-altitude alpine lakes is limited. In this study, to investigate the diversity and geographical patterns of the FL and PA bacterial communities and to quantify the relative influence of environmental filtering and dispersal limitation in shaping the FL and PA bacterial communities, we collected surface water samples from 26 lakes over 1,000 kilometers on the Tibetan Plateau.

自由生活（Free-living, FL）与颗粒附着（Particle-attached, PA）细菌在水生生态系统中具有迥异的扩散潜能与生态功能。然而，目前学界对高海拔高山湖泊中这类细菌的多样性与区域生物地理格局的认知仍较为有限。本研究旨在探究自由生活与颗粒附着细菌群落的多样性及地理分布格局，并量化环境过滤作用与扩散限制在塑造这两类细菌群落过程中的相对影响，我们在青藏高原范围内覆盖逾1000公里的区域内采集了26个湖泊的表层水样。