caa a22 4500 445894105 CHVBK 20180317145626.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10750-011-0834-x doi (NATIONALLICENCE)springer-10.1007/s10750-011-0834-x Genetic diversity patterns of microbial communities in a subtropical riverine ecosystem (Jiulong River, southeast China) [Elektronische Daten] [Lemian Liu, Jun Yang, Yongyu Zhang] Prokaryotic and eukaryotic microbes are key organisms in aquatic ecosystems and play pivotal roles in the biogeochemical cycles, but little is known about genetic diversity of these communities in subtropical rivers. In this study, microbial planktonic communities were determined by using denaturing gradient gel electrophoresis (DGGE) analysis from the Jiulong River, southeast China, and their relationships with local environmental factors were studied. The Betaproteobacteria (26%) and Dinophyceae (26%) were the most dominant taxa in prokaryotic and eukaryotic clones derived from DGGE bands, respectively. Further, both cluster and ordination analyses of prokaryotic and eukaryotic DGGE fingerprinting resulted in three identical groups from the 15 sites, which were closely related with the environmental factors. Partial redundancy analysis (partial RDA) revealed that agricultural pollution (phosphorus and nitrogen) and saltwater intrusion (conductivity and salinity) were the main factors impacting microbial community composition, by explaining more than two-thirds of the total variation in both prokaryotic (67.0%) and eukaryotic (70.5%) communities. Moreover, the robust and quantifiable relationship between DGGE results and environmental variables indicated that the community-level molecular fingerprinting techniques could support the physicochemical assessment of riverine water quality and ecosystem health. Springer Science+Business Media B.V., 2011 Plankton nationallicence Microbial community composition nationallicence DGGE nationallicence Redundancy analysis nationallicence Biomonitoring nationallicence Subtropical river nationallicence Liu Lemian Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, 361021, Xiamen, People's Republic of China aut Yang Jun Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, 361021, Xiamen, People's Republic of China aut Zhang Yongyu Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, 361021, Xiamen, People's Republic of China aut Hydrobiologia Springer Netherlands 678/1(2011-12-01), 113-125 0018-8158 678:1<113 2011 678 10750 https://doi.org/10.1007/s10750-011-0834-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0834-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Lemian Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, 361021, Xiamen, People's Republic of China aut NATIONALLICENCE 700 1- Yang Jun Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, 361021, Xiamen, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Yongyu Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, 361021, Xiamen, People's Republic of China aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 678/1(2011-12-01), 113-125 0018-8158 678:1<113 2011 678 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer