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Habitat-specific patterns and drivers of bacterial β-diversity in China’s drylands

Journal Article · · The ISME Journal
 [1];  [2];  [2];  [2];  [3];  [2];  [4];  [5]
  1. Chinese Academy of Sciences (CAS), Shenyang (China); Univ. of Oklahoma, Norman, OK (United States); Chinese Academy of Sciences (CAS), Beijing (China)
  2. Chinese Academy of Sciences (CAS), Shenyang (China)
  3. Chinese Academy of Sciences (CAS), Beijing (China)
  4. Univ. of Oklahoma, Norman, OK (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Chinese Academy of Sciences (CAS), Shenyang (China); Chinese Academy of Sciences (CAS), Beijing (China)
The existence of biogeographic patterns among most free-living microbial taxa has been well established, yet little is known about the underlying mechanisms that shape these patterns. In this work, we examined soil bacterial β-diversity across different habitats in the drylands of northern China. We evaluated the relative importance of environmental factors versus geographic distance to a distance-decay relationship, which would be explained by the relative effect of basic ecological processes recognized as drivers of diversity patterns in macrobial theoretical models such as selection and dispersal. While the similarity of bacterial communities significantly declined with increasing geographic distance, the distance-decay slope and the relative importance of factors driving distance-decay patterns varied across different habitats. A strong distance-decay relationship was observed in the alpine grassland, where the community similarity was influenced only by the environmental factors. Yet, geographic distance was solely responsible for community similarity in the desert. Even the average compositional similarity among locations in the desert was distinctly lower compared with those in other habitats. We found no evidence that dispersal limitation strongly influenced the β-diversity of bacterial communities in the desert grassland and typical grassland. Together, our results provide robust evidence of habitat specificity for microbial diversity patterns and their underlying drivers. Our findings suggest that microorganisms also have multiple drivers of diversity patterns and some of which may be parallel to some fundamental processes for explaining biodiversity patterns in macroorganisms.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1567082
Journal Information:
The ISME Journal, Journal Name: The ISME Journal Journal Issue: 6 Vol. 11; ISSN 1751-7362
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Core Microbiota in Agricultural Soils and Their Potential Associations with Nutrient Cycling journal March 2019
Environmental filtering drives distinct continental atlases of soil archaea between dryland and wetland agricultural ecosystems journal February 2019
The Patterns and Drivers of Bacterial and Fungal β-Diversity in a Typical Dryland Ecosystem of Northwest China journal November 2017
Macro and Microelements Drive Diversity and Composition of Prokaryotic and Fungal Communities in Hypersaline Sediments and Saline–Alkaline Soils journal February 2018
Stair-Step Pattern of Soil Bacterial Diversity Mainly Driven by pH and Vegetation Types Along the Elevational Gradients of Gongga Mountain, China journal March 2018
Relationships Between Fungal and Plant Communities Differ Between Desert and Grassland in a Typical Dryland Region of Northwest China journal October 2018
Additional file 1 of Unraveling the habitat preferences, ecological drivers, potential hosts, and auxiliary metabolism of soil giant viruses across China dataset January 2024
Effects of rhizoma peanut cultivars ( Arachis glabrata Benth.) on the soil bacterial diversity and predicted function in nitrogen fixation journal November 2019
Temporal and spatial succession and dynamics of soil fungal communities in restored grassland on the Loess Plateau in China journal March 2019
Interpreting distance‐decay pattern of soil bacteria via quantifying the assembly processes at multiple spatial scales journal March 2019
Distinct factors drive the assembly of quinoa-associated microbiomes along elevation journal January 2020
Balance between community assembly processes mediates species coexistence in agricultural soil microbiomes across eastern China journal October 2019
The drivers of soil bacterial communities in rubber plantation at local and geographic scales journal May 2019
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Abiotic niche partitioning and negative density dependence across multiple life stages in a temperate forest in northeastern China journal February 2020
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Fungal community demonstrates stronger dispersal limitation and less network connectivity than bacterial community in sediments along a large river journal August 2019
Soil pH and temperature regulate assembly processes of abundant and rare bacterial communities in agricultural ecosystems journal August 2019
Agriculture erases climate constraints on soil nematode communities across large spatial scales journal September 2019
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How bacterioplankton community can go with cascade damming in the highly regulated Lancang-Mekong River Basin journal October 2018
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