Vegetation and microbes interact to preserve carbon in many wooded peatlands

Loading...
Thumbnail Image

Date

2021-12

Journal Title

Journal ISSN

Volume Title

Repository Usage Stats

33
views
97
downloads

Citation Stats

Abstract

<jats:title>Abstract</jats:title><jats:p>Peatlands have persisted as massive carbon sinks over millennia, even during past periods of climate change. The commonly accepted theory of abiotic controls (mainly anoxia and low temperature) over carbon decomposition cannot fully explain how vast low-latitude shrub/tree dominated (wooded) peatlands consistently accrete peat under warm and seasonally unsaturated conditions. Here we show, by comparing the composition and ecological traits of microbes between <jats:italic>Sphagnum</jats:italic>- and shrub-dominated peatlands, that slow-growing microbes decisively dominate the studied shrub-dominated peatlands, concomitant with plant-induced increases in highly recalcitrant carbon and phenolics. The slow-growing microbes metabolize organic matter thirty times slower than the fast-growing microbes that dominate our <jats:italic>Sphagnum</jats:italic>-dominated site. We suggest that the high-phenolic shrub/tree induced shifts in microbial composition may compensate for positive effects of temperature and/or drought on metabolism over time in peatlands. This biotic self-sustaining process that modulates abiotic controls on carbon cycling may improve projections of long-term, climate-carbon feedbacks in peatlands.</jats:p>

Department

Description

Provenance

Subjects

Citation

Published Version (Please cite this version)

10.1038/s43247-021-00136-4

Publication Info

Wang, H, J Tian, H Chen, M Ho, R Vilgalys, ZJ Bu, X Liu, CJ Richardson, et al. (2021). Vegetation and microbes interact to preserve carbon in many wooded peatlands. Communications Earth & Environment, 2(1). 10.1038/s43247-021-00136-4 Retrieved from https://hdl.handle.net/10161/24513.

This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.


Unless otherwise indicated, scholarly articles published by Duke faculty members are made available here with a CC-BY-NC (Creative Commons Attribution Non-Commercial) license, as enabled by the Duke Open Access Policy. If you wish to use the materials in ways not already permitted under CC-BY-NC, please consult the copyright owner. Other materials are made available here through the author’s grant of a non-exclusive license to make their work openly accessible.