Articles | Volume 9, issue 1
https://doi.org/10.5194/soil-9-55-2023
https://doi.org/10.5194/soil-9-55-2023
Original research article
 | 
12 Jan 2023
Original research article |  | 12 Jan 2023

Soil depth as a driver of microbial and carbon dynamics in a planted forest (Pinus radiata) pumice soil

Alexa K. Byers, Loretta G. Garrett, Charlotte Armstrong, Fiona Dean, and Steve A. Wakelin

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Cited articles

Abarenkov, K., Zirk, A., Piirmann, T., Pöhönen, R., Ivanov, F., Nilsson, R. H., and Kõljalg, U.: UNITE general FASTA release for Fungi, UNITE Community [data set], https://doi.org/10.15156/BIO/1280049, 2021. 
Arbizu, P. M.: pairwiseAdonis: Pairwise Multilevel Comparison using Adonis, GitHub repository [code], https://github.com/pmartinezarbizu/pairwiseAdonis.git, 2017. 
Bai, R., Wang, J.-T., Deng, Y., He, J.-Z., Feng, K., and Zhang, L.-M.: Microbial Community and Functional Structure Significantly Varied among Distinct Types of Paddy Soils But Responded Differently along Gradients of Soil Depth Layers, Front Microbiol., 8, 945, https://doi.org/10.3389/fmicb.2017.00945, 2017. 
Balesdent, J., Basile-Doelsch, I., Chadoeuf, J., Cornu, S., Derrien, D., Fekiacova, Z., and Hatté, C.: Atmosphere–soil carbon transfer as a function of soil depth, Nature, 559, 599–602, https://doi.org/10.1038/s41586-018-0328-3, 2018. 
Barberán, A., Ramirez, K. S., Leff, J. W., Bradford, M. A., Wall, D. H., and Fierer, N.: Why are some microbes more ubiquitous than others? Predicting the habitat breadth of soil bacteria, Ecol. Lett., 17, 794–802, https://doi.org/10.1111/ele.12282, 2014. 
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Short summary
Forest soils store large amounts of carbon (C), but research has remained focused on C storage in topsoil layers. We investigated changes in forest soil C storage and microbial ecology to 1 m depth. Though absolute soil C content, microbial diversity and microbial biomass declined sharply with depth, 35 % of total soil C was cumulatively stored in subsoil layers. Our findings highlight the importance of including subsoils when calculating the C storage capacity of forest systems.