OOS 9 - Microbial Macroecology: How Ubiquitous Soil Microbes Form a Pattern?

Organizer(s)

• XX

  Xiaofeng Xu

  Associate Professor
  San Diego State University, California, United States

Co-Organizer(s)

• RS

  Robert Sinsabaugh

  University of New Mexico, United States
• NW

  Nannan Wang

  Chinese Academy of Sciences, China (People's Republic)

Microbes, the small living single-cell organisms, contribute the largest biodiversity and drive the nutrient biogeochemical cycling on Earth. Microbes are ubiquitous in soils, theoretically inhabiting every piece of land on the surface of Earth. Yet they are not uniform in abundance, community structure, and function. Biogeographic patterns emerged for biomass, bacteria: fungi ratio, microbial functions, and traits across space, over time, and through a cross-biological hierarchy. For example, bacterial diversity along pH, positive correlation between biomass and soil carbon and nitrogen concentration, and microbial seasonality. A number of mechanisms have been identified to shape the biogeographic patterns in microbial abundance and functional traits, such as dispersal, diversification, mutation, gene transfer, microbial evolutionary adaptation, local extinction, and environmental filtering. To illuminate those patterns and further examine the underlying mechanism, microbial macroecology was conceptualized and applied. Applying microbial macroecology to the soil microbiome represents a fundamental step in microbial ecology. To further advance microbial macroecology and its applications, there is a need to broaden the research on microbial biogeographic patterns and their underlying mechanisms. This organized session will focus on the recent progress on microbial macroecology on various microbial properties and discuss the potential research direction.

Presentations:

• 3:30 PM – 3:45 PM PDT

  soil microbial distribution across China and the globe
  

  Presenting Author: Haiyan Chu – Chinese Academy of Sciences
• 3:45 PM – 4:00 PM PDT

  How do soil bacterial and fungal communities affect soil multifunctionality in grasslands?
  

  Presenting Author: Linna Ma – Institute of Botany, Chinese Academy of Sciences
• 4:00 PM – 4:15 PM PDT

  Global patterns and controls of fungal and bacterial biomass historical dynamics during 1901-2016 as simulated by the CLM-Microbe model
  

  Presenting Author: LIyuan He – San Diego State University
• 4:15 PM – 4:30 PM PDT

  Connections and disconnections between soil fungal and tree communities over space and time
  

  Presenting Author: Stephanie Kivlin – University of Tennessee

  Co-author: Joseph D. Edwards – University of Tennessee - Knoxville

  Co-author: John D. Parker – Smithsonian Environmental Research Center

  Co-author: Melissa McCormick – Smithsonian Environmental Research Center

  Co-author: Richard P. Phillips – Indiana University - Bloomington

  Co-author: Songlin Fei – Purdue University

  Co-author: LaRue A. Elizabeth – University of Texas at El Paso

  Co-author: Grant Domke – US Forest Service

  Co-author: Stephanie Kivlin – University of Tennessee
• 4:30 PM – 4:45 PM PDT

  Global-scale biogeography and conservation needs of soil fungi
  

  Presenting Author: Leho Tedersoo – University of Tartu
• 4:45 PM – 5:00 PM PDT

  Global distribution patterns of mycorrhizal fungal biomass in plant roots
  

  Presenting Author: Nadia Soudzilovskaia – Hasselt University