The patterns of macrobiota in lotic ecosystems have been
extensively explored, however, the dynamics of microbiota
remain poorly investigated, especially in the high-elevation
region. To address this deficit, we collected eight samples to
unveil the bacterial and archaeal community in the Kaidu
river, located at the arid region of northwestern China (an
average of 2,500 m a.s.l.). For the bacterial community, phylogenetically
Betaproteobacteria prevailed, followed by Alphaproteobacteria
and Actinobacteria; at the finer genus level,
Limnohabitans and Variovorax were prominent. Along the
river, the bacterial community showed a continuous succession.
Specifically, their α- and β-diversity gradually increased,
suggesting a distance-decay pattern. Additionally, there was
an ecological transition between the dominant and the rare
sub-community along the river: the relative abundance of the
dominant members gradually decreased as the rare members
increased. We report that temperature and spatial distance
were significantly related to the variation of bacterial community.
Variance partitioning analysis showed that the environmental
factors contributed more to the bacterial community
than did the spatial distance. In the case of the archaeal
community, the methanogenic groups, mainly Methanosaeta
and Methanosarcina, were prominent within the Kaidu
river. Unlike the continuous change in the patterns of the
bacterial community, the archaeal community showed a constant
pattern along the river. Our results showed that the archaeal
community was independent of the environmental and
spatial factors. We propose that the inoculation of soil-derived
archaea is responsible for the archaeal community in
the Kaidu river. Together, our study demonstrated that the
bacterial community in the high-elevation Kaidu river is a
continuum, whereas the archaeal community is not.
Citations
Citations to this article as recorded by
Planktonic archaea reveal stronger dispersal limitation and more network connectivity than planktonic bacteria in the Jinsha River of southwestern China Ge Cui, Juan Chen, Chao Wang, Peifang Wang, Bo Zhang, Han Gao, Rui Fu Freshwater Biology.2023; 68(11): 1995. CrossRef
Insights on the particle-attached riverine archaeal community shifts linked to seasons and to multipollution during a Mediterranean extreme storm event Mégane Noyer, Maria Bernard, Olivier Verneau, Carmen Palacios Environmental Science and Pollution Research.2023; 30(17): 49685. CrossRef
Using the health index of the environmental microbiota to predict the health status of aquatic wildlife Haile Yang, Qiong Zhou, Xia Guo, Zhigang Liu, Hui Zhang, Hao Du Ecological Indicators.2023; 151: 110346. CrossRef
Phytoplankton dynamics and implications for eutrophication management in an urban river with a series of rubber dams Linlin Bao, Jie Chen, Hongjin Tong, Jun Qian, Xuyong Li Journal of Environmental Management.2022; 311: 114865. CrossRef
Effect of Water Chemistry, Land Use Patterns, and Geographic Distances on the Spatial Distribution of Bacterioplankton Communities in an Anthropogenically Disturbed Riverine Ecosystem Jun Zhao, Wang Peng, Mingjun Ding, Minghua Nie, Gaoxiang Huang Frontiers in Microbiology.2021;[Epub] CrossRef
Bacterial community composition shaped by water chemistry and geographic distance in an anthropogenically disturbed river Peng Wang, Jun Zhao, Hanyu Xiao, Wenjing Yang, Xiaofang Yu Science of The Total Environment.2019; 655: 61. CrossRef
Structure of bacterial and eukaryote communities reflect in situ controls on community assembly in a high-alpine lake Eli Michael S. Gendron, John L. Darcy, Katherinia Hell, Steven K. Schmidt Journal of Microbiology.2019; 57(10): 852. CrossRef