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Global mycorrhizal plant distribution linked to terrestrial carbon stocks

Journal Article · · Nature Communications
 [1];  [1];  [2];  [1];  [3];  [4];  [5];  [6];  [1];  [7]
  1. Leiden Univ. (Netherlands)
  2. Univ. Autonoma de Barcelona (Spain); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. International Inst. for Applied Systems, Laxenburg (Austria)
  4. The Morton Arboretum, Lisle, IL (United States)
  5. California Institute of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab. (JPL); Univ. of California, Los Angeles, CA (United States)
  6. Univ. of Western Australia, Perth, WA (Australia)
  7. Univ. of Tartu (Estonia)
Vegetation impacts on ecosystem functioning are mediated by mycorrhizas, plant–fungal associations formed by most plant species. Ecosystems dominated by distinct mycorrhizal types differ strongly in their biogeochemistry. Quantitative analyses of mycorrhizal impacts on ecosystem functioning are hindered by the scarcity of information on mycorrhizal distributions. Here we present global, high-resolution maps of vegetation biomass distribution by dominant mycorrhizal associations. Arbuscular, ectomycorrhizal, and ericoid mycorrhizal vegetation store, respectively, 241 ± 15, 100 ± 17, and 7 ± 1.8 GT carbon in aboveground biomass, whereas non-mycorrhizal vegetation stores 29 ± 5.5 GT carbon. Soil carbon stocks in both topsoil and subsoil are positively related to the community-level biomass fraction of ectomycorrhizal plants, though the strength of this relationship varies across biomes. We show that human-induced transformations of Earth’s ecosystems have reduced ectomycorrhizal vegetation, with potential ramifications to terrestrial carbon stocks. Our work provides a benchmark for spatially explicit and globally quantitative assessments of mycorrhizal impacts on ecosystem functioning and biogeochemical cycling.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1615894
Report Number(s):
LLNL-JRNL--795542; 996752
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 (1)

Nitrogen and phosphorus constrain the CO2 fertilization of global plant biomass journal August 2019

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