Research Output

Land use driven change in soil pH affects microbial carbon cycling processes

  Soil microorganisms act as gatekeepers for soil–atmosphere carbon exchange by balancing the accumulation and release of soil organic matter. However, poor understanding of the mechanisms responsible hinders the development of effective land management strategies to enhance soil carbon storage. Here we empirically test the link between microbial ecophysiological traits and topsoil carbon content across geographically distributed soils and land use contrasts. We discovered distinct pH controls on microbial mechanisms of carbon accumulation. Land use intensification in low-pH soils that increased the pH above a threshold (~6.2) leads to carbon loss through increased decomposition, following alleviation of acid retardation of microbial growth. However, loss of carbon with intensification in near-neutral pH soils was linked to decreased microbial biomass and reduced growth efficiency that was, in turn, related to trade-offs with stress alleviation and resource acquisition. Thus, less-intensive management practices in near-neutral pH soils have more potential for carbon storage through increased microbial growth efficiency, whereas in acidic soils, microbial growth is a bigger constraint on decomposition rates.

  • Type:

    Article

  • Date:

    04 September 2018

  • Publication Status:

    Published

  • Publisher

    Springer Nature America, Inc

  • DOI:

    10.1038/s41467-018-05980-1

  • Cross Ref:

    5980

  • ISSN:

    2041-1723

  • Library of Congress:

    QD415-436 Biochemistry

  • Dewey Decimal Classification:

    572 Biochemistry

  • Funders:

    Natural Environment Research Council; Horizon 2020

Citation

Malik, A. A., Puissant, J., Buckeridge, K. M., Goodall, T., Jehmlich, N., Chowdhury, S., …Griffiths, R. I. (2018). Land use driven change in soil pH affects microbial carbon cycling processes. Nature communications, 9(1), 1-10. https://doi.org/10.1038/s41467-018-05980-1

Authors

Keywords

General Biochemistry, Genetics and Molecular Biology; General Physics and Astronomy; General Chemistry

Monthly Views:

Available Documents

  • pdf

    Land use driven change in soil pH affects microbial carbon cycling processes

    1MB

    Creative Commons BY
    Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

  • Downloadable citations

    HTML BIB RTF