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Global ecological predictors of the soil priming effect

Journal Article · · Nature Communications
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [10];  [8];  [11];  [2];  [12];  [13];  [14];  [15];  [14];  [16] more »;  [17];  [18];  [8];  [16];  [19];  [20];  [2];  [21];  [2];  [22] « less
  1. Campus Univ. de Espinardo, Murcia (Spain); DOE/OSTI
  2. Campus Univ. de Espinardo, Murcia (Spain)
  3. Univ. of Colorado, Boulder, CO (United States)
  4. Univ. of New South Wales, Sydney, NSW (Australia)
  5. Northern Arizona Univ., Flagstaff, AZ (United States)
  6. Univ. Mayor, Santiago (Chile)
  7. Univ. Mayor, Santiago (Chile); Inst. de Ecología and Biodiversidad (IEB), Casilla, Santiago (Chile); Univ. Mayor de San Simón, Cochabamba (Bolivia)
  8. Univ. of California, Merced, CA (United States)
  9. Newcastle Univ. (United Kingdom)
  10. Univ. Pablo de Olavide, Sevilla (Spain)
  11. Univ. of Western Australia, Perth, WA (Australia); Japan International Research Centre for Agricultural Sciences, Tsukuba (Japan)
  12. National Taiwan Univ., Taipei (Taiwan)
  13. Helmholtz-Centre for Environmental Research – UFZ, Leipzig (Germany)
  14. Univ. of Innsbruck (Austria)
  15. Univ. of Western Australia, Perth, WA (Australia)
  16. Univ. Nacional Autonoma de Mexico (UNAM), Ciudad Universitaria (Mexico)
  17. Inst. de Ecología and Biodiversidad (IEB), Casilla, Santiago (Chile); Inst. de Ecología y Biodiversidad, Las Palmeras, Santiago (Chile)
  18. U.S. Geological Survey, Moab, UT (United States). Southwest Biological Science Center
  19. Univ. of Nevada, Reno, NV (United States)
  20. Colorado State Univ., Fort Collins, CO (United States)
  21. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  22. Univ. Rey Juan Carlos, Móstoles (Spain)
+ Show Author Affiliations
Identifying the global drivers of soil priming is essential to understanding C cycling in terrestrial ecosystems. We conducted a survey of soils across 86 globally-distributed locations, spanning a wide range of climates, biotic communities, and soil conditions, and evaluated the apparent soil priming effect using 13C-glucose labeling. Here we show that the magnitude of the positive apparent priming effect (increase in CO2 release through accelerated microbial biomass turnover) was negatively associated with SOC content and microbial respiration rates. Our statistical modeling suggests that apparent priming effects tend to be negative in more mesic sites associated with higher SOC contents. In contrast, a single-input of labile C causes positive apparent priming effects in more arid locations with low SOC contents. Our results provide solid evidence that SOC content plays a critical role in regulating apparent priming effects, with important implications for the improvement of C cycling models under global change scenarios.
Research Organization:
USGS Western Region, Menlo Park, CA (United States)
Sponsoring Organization:
Achievement Rewards for College Scientists (ARCS) Foundation; Comisión Nacional de Investigación Científica y Tecnológica (Conicyt); Consejo Superior de Investigaciones Científicas (CSIC); Federación Española de Enfermedades Raras (FEDER); Fundación Séneca; Millennium Scientific Initiative; National Fund for Scientific and Technological Development (FONDECYT); State of Arizona; USDOE Office of Science (SC); USGS Ecosystems Mission Area
Grant/Contract Number:
SC0008168
OSTI ID:
1614627
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Integrating Computational Methods to Investigate the Macroecology of Microbiomes journal January 2020
Regulation of priming effect by soil organic matter stability over a broad geographic scale journal November 2019

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54 ENVIRONMENTAL SCIENCES
Biodiversity
Carbon Cycle
Science & Technology