The temperature sensitivity of soil: microbial biodiversity, growth, and carbon mineralization
Journal Article
·
· The ISME Journal
- West Virginia Univ., Morgantown, WV (United States); Chinese Academy of Sciences (CAS), Shenyang, Liaoning (China)
- West Virginia Univ., Morgantown, WV (United States)
- Northern Arizona Univ., Flagstaff, AZ (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Iowa State Univ., Ames, IA (United States)
Microorganisms drive soil carbon mineralization and changes in their activity with increased temperature could feedback to climate change. Further, variation in microbial biodiversity and the temperature sensitivities ($$Q_{10}$$) of individual taxa may explain differences in the $$Q_{10}$$ of soil respiration, a possibility not previously examined due to methodological limitations. Here, we show phylogenetic and taxonomic variation in the $$Q_{10}$$ of growth (5–35 °C) among soil bacteria from four sites, one from each of Arctic, boreal, temperate, and tropical biomes. Differences in the temperature sensitivities of taxa and the taxonomic composition of communities determined community-assembled bacterial growth $$Q_{10}$$, which was strongly predictive of soil respiration $$Q_{10}$$ within and across biomes. Our results suggest community-assembled traits of microbial taxa may enable enhanced prediction of carbon cycling feedbacks to climate change in ecosystems across the globe.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); Chinese Academy of Sciences (CAS)
- DOE Contract Number:
- AC52-07NA27344; SC0020172; SC0016207
- OSTI ID:
- 1813712
- Report Number(s):
- LLNL-JRNL-813918; 1021365
- Journal Information:
- The ISME Journal, Journal Name: The ISME Journal Journal Issue: 9 Vol. 15; ISSN 1751-7362
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
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