Microbial growth and carbon use efficiency show seasonal responses in a multifactorial climate change experiment

Eva Simon; Alberto Canarini; Victoria Martin; Joana Seneca; Theresa Boeckle; David Reinthaler; Erich M. Poetsch; Hans-Peter Piepho; Michael Bahn; Wolfgang Wanek; Andreas Richter

doi:10.1038/s42003-020-01317-1

Microbial growth and carbon use efficiency show seasonal responses in a multifactorial climate change experiment

Eva Simon, Alberto Canarini (Corresponding author), Victoria Martin, Joana Seneca, Theresa Boeckle, David Reinthaler, Erich M. Poetsch, Hans-Peter Piepho, Michael Bahn, Wolfgang Wanek, Andreas Richter (Corresponding author)

Centre for Microbiology and Environmental Systems Science

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

Microbial growth and carbon use efficiency (CUE) are central to the global carbon cycle, as microbial remains form soil organic matter. We investigated how future global changes may affect soil microbial growth, respiration, and CUE. We aimed to elucidate the soil microbial response to multiple climate change drivers across the growing season and whether effects of multiple global change drivers on soil microbial physiology are additive or interactive. We measured soil microbial growth, CUE, and respiration at three time points in a field experiment combining three levels of temperature and atmospheric CO2, and a summer drought. Here we show that climate change-driven effects on soil microbial physiology are interactive and season-specific, while the coupled response of growth and respiration lead to stable microbial CUE (average CUE = 0.39). These results suggest that future research should focus on microbial growth across different seasons to understand and predict effects of global changes on soil carbon dynamics.

Original language	English
Article number	584
Number of pages	10
Journal	Communications Biology
Volume	3
Issue number	1
Early online date	16 Oct 2020
DOIs	https://doi.org/10.1038/s42003-020-01317-1
Publication status	Published - 2020

Funding

We thank Margarete Watzka and Ludwig Seidl for assistance in the laboratory. This work was supported by the Austrian Science Fund FWF [grant number P 28572] and the Austrian Ministry of Agriculture, Regions, and Tourism. We want to thank the Austrian Research and Education Centre Raumberg-Gumpenstein (AREC) for assisting us during the sampling campaigns and providing the experimental site, which was supported by the DaFNE project ClimGrassEco (101067).

Austrian Fields of Science 2012

106026 Ecosystem research
106022 Microbiology

Keywords

ELEVATED ATMOSPHERIC CO2
SOIL RESPIRATION
TEMPERATURE SENSITIVITY
THERMAL-ACCLIMATION
COMMUNITY STRUCTURE
WATER AVAILABILITY
DROUGHT
BIOMASS
NITROGEN
TURNOVER

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1038/s42003-020-01317-1Licence: CC BY 4.0

https://phaidra.univie.ac.at/o:1231378Licence: CC BY 4.0

Cite this

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title = "Microbial growth and carbon use efficiency show seasonal responses in a multifactorial climate change experiment",

abstract = "Microbial growth and carbon use efficiency (CUE) are central to the global carbon cycle, as microbial remains form soil organic matter. We investigated how future global changes may affect soil microbial growth, respiration, and CUE. We aimed to elucidate the soil microbial response to multiple climate change drivers across the growing season and whether effects of multiple global change drivers on soil microbial physiology are additive or interactive. We measured soil microbial growth, CUE, and respiration at three time points in a field experiment combining three levels of temperature and atmospheric CO2, and a summer drought. Here we show that climate change-driven effects on soil microbial physiology are interactive and season-specific, while the coupled response of growth and respiration lead to stable microbial CUE (average CUE = 0.39). These results suggest that future research should focus on microbial growth across different seasons to understand and predict effects of global changes on soil carbon dynamics.",

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AU - Canarini, Alberto

AU - Martin, Victoria

AU - Seneca, Joana

AU - Boeckle, Theresa

AU - Reinthaler, David

AU - Poetsch, Erich M.

AU - Piepho, Hans-Peter

AU - Bahn, Michael

AU - Wanek, Wolfgang

AU - Richter, Andreas

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AB - Microbial growth and carbon use efficiency (CUE) are central to the global carbon cycle, as microbial remains form soil organic matter. We investigated how future global changes may affect soil microbial growth, respiration, and CUE. We aimed to elucidate the soil microbial response to multiple climate change drivers across the growing season and whether effects of multiple global change drivers on soil microbial physiology are additive or interactive. We measured soil microbial growth, CUE, and respiration at three time points in a field experiment combining three levels of temperature and atmospheric CO2, and a summer drought. Here we show that climate change-driven effects on soil microbial physiology are interactive and season-specific, while the coupled response of growth and respiration lead to stable microbial CUE (average CUE = 0.39). These results suggest that future research should focus on microbial growth across different seasons to understand and predict effects of global changes on soil carbon dynamics.

KW - ELEVATED ATMOSPHERIC CO2

KW - SOIL RESPIRATION

KW - TEMPERATURE SENSITIVITY

KW - THERMAL-ACCLIMATION

KW - COMMUNITY STRUCTURE

KW - WATER AVAILABILITY

KW - DROUGHT

KW - BIOMASS

KW - NITROGEN

KW - TURNOVER

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ER -

Microbial growth and carbon use efficiency show seasonal responses in a multifactorial climate change experiment

Abstract

Funding

Austrian Fields of Science 2012

Keywords

UN SDGs

Access to Document

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