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review article

Resilience of aerobic methanotrophs in soils; spotlight on the methane sink under agriculture

Lim, Jiyeon
•
Wehmeyer, Helena
•
Heffner, Tanja
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February 14, 2024
Fems Microbiology Ecology

Aerobic methanotrophs are a specialized microbial group, catalyzing the oxidation of methane. Disturbance-induced loss of methanotroph diversity/abundance, thus results in the loss of this biological methane sink. Here, we synthesized and conceptualized the resilience of the methanotrophs to sporadic, recurring, and compounded disturbances in soils. The methanotrophs showed remarkable resilience to sporadic disturbances, recovering in activity and population size. However, activity was severely compromised when disturbance persisted or reoccurred at increasing frequency, and was significantly impaired following change in land use. Next, we consolidated the impact of agricultural practices after land conversion on the soil methane sink. The effects of key interventions (tillage, organic matter input, and cover cropping) where much knowledge has been gathered were considered. Pairwise comparisons of these interventions to nontreated agricultural soils indicate that the agriculture-induced impact on the methane sink depends on the cropping system, which can be associated to the physiology of the methanotrophs. The impact of agriculture is more evident in upland soils, where the methanotrophs play a more prominent role than the methanogens in modulating overall methane flux. Although resilient to sporadic disturbances, the methanotrophs are vulnerable to compounded disturbances induced by anthropogenic activities, significantly affecting the methane sink function.

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Type
review article
DOI
10.1093/femsec/fiae008
Web of Science ID

WOS:001163261000002

Author(s)
Lim, Jiyeon
Wehmeyer, Helena
Heffner, Tanja
Aeppli, Meret  
Gu, Wenyu  
Kim, Pil Joo
Horn, Marcus A.
Ho, Adrian
Date Issued

2024-02-14

Publisher

Oxford Univ Press

Published in
Fems Microbiology Ecology
Volume

100

Issue

3

Article Number

fiae008

Subjects

Life Sciences & Biomedicine

•

Cover Cropping

•

Disturbances

•

Methane Oxidation

•

Methanotroph Ecology

•

Organic Amendment

•

Tillage

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SOIL  
FunderGrant Number

German Academic Exchange Service

91864186

German Academic Exchange Service (DAAD)

HO6234/1-2

Deutsche Forschungsgemeinschaft

Available on Infoscience
March 18, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/206403
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