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- Title
Structure and function of the soil microbiome underlying N<sub>2</sub>O emissions from global wetlands.
- Authors
Bahram, Mohammad; Espenberg, Mikk; Pärn, Jaan; Lehtovirta-Morley, Laura; Anslan, Sten; Kasak, Kuno; Kõljalg, Urmas; Liira, Jaan; Maddison, Martin; Moora, Mari; Niinemets, Ülo; Öpik, Maarja; Pärtel, Meelis; Soosaar, Kaido; Zobel, Martin; Hildebrand, Falk; Tedersoo, Leho; Mander, Ülo
- Abstract
Wetland soils are the greatest source of nitrous oxide (N2O), a critical greenhouse gas and ozone depleter released by microbes. Yet, microbial players and processes underlying the N2O emissions from wetland soils are poorly understood. Using in situ N2O measurements and by determining the structure and potential functional of microbial communities in 645 wetland soil samples globally, we examined the potential role of archaea, bacteria, and fungi in nitrogen (N) cycling and N2O emissions. We show that N2O emissions are higher in drained and warm wetland soils, and are correlated with functional diversity of microbes. We further provide evidence that despite their much lower abundance compared to bacteria, nitrifying archaeal abundance is a key factor explaining N2O emissions from wetland soils globally. Our data suggest that ongoing global warming and intensifying environmental change may boost archaeal nitrifiers, collectively transforming wetland soils to a greater source of N2O. The wetland soil microbiome has a major impact on greenhouse gas emissions. Here the authors characterize how a group of archaea contribute to N2O emissions and find that climate and land use changes could promote these organisms.
- Subjects
WETLAND soils; SOIL structure; OZONE-depleting substances; WETLANDS; GLOBAL warming; NITROUS oxide
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-022-29161-3