title: Distinct Factors Shape Aquatic and Sedimentary Microbial Community Structures in the Lakes of Western China.
abstract: Little is known about the relative importance of spatial and environmental factors to structuring aquatic and sedimentary microbial biogeography in lakes. Here, we investigated the microbial community composition (MCC) of the water (n= 35) and sediment (n= 35) samples from 16 lakes in western China (salinity: freshwater to salt saturation; pairwise geographical distance: 9-2027 km) using high-throughput sequencing and evaluated the relative importance of spatial and environmental factors to microbial (including total, abundant, and rare) distributions. Our results showed that spatial factors were more important than environmental factors in shaping the biogeography of aquatic and sedimentary microbial communities in the studied lakes, and spatial factors on abundant microbial community was stronger than that on the total/rare microbial communities. Moreover, sedimentary rare MCC might be more sensitive to environmental factors than its aquatic counterpart. Such different biogeography responses of total, abundant, and rare communities to environmental and spatial factors could be ascribed to different physiochemical properties between water and sediment. Collectively, this study expands our understanding of factors shaping microbial biogeography of total, abundant, and rare communities between waters and sediments of lakes.
authors.affiliation: State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences Wuhan, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences Wuhan, China.
authors.forename: Hongchen
authors.initials: H
authors.lastname: Jiang
authors.affiliation: State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences Wuhan, China.
authors.forename: Geng
authors.initials: G
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences Wuhan, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences Wuhan, China.
authors.forename: Guojing
authors.initials: G
authors.lastname: Zhang
keywords: aquatic microbial community; biogeography; environmental factors; lakes; sedimentary microbial community; spatial factors