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The temperature sensitivity of soil: microbial biodiversity, growth, and carbon mineralization

Journal Article · · The ISME Journal

Abstract

Microorganisms drive soil carbon mineralization and changes in their activity with increased temperature could feedback to climate change. Variation in microbial biodiversity and the temperature sensitivities (Q10) of individual taxa may explain differences in the Q10 of soil respiration, a possibility not previously examined due to methodological limitations. Here, we show phylogenetic and taxonomic variation in the Q10 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 Q10, which was strongly predictive of soil respiration Q10 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.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344; AC52-07NA27344
OSTI ID:
2280730
Alternate ID(s):
OSTI ID: 1813712
Journal Information:
The ISME Journal, Journal Name: The ISME Journal Journal Issue: 9 Vol. 15; ISSN 1751-7362
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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