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dc.contributor.author
Ofiti, Nicholas O.E.
dc.contributor.author
Zosso, Cyrill U.
dc.contributor.author
Soong, Jennifer L.
dc.contributor.author
Solly, Emily F.
dc.contributor.author
Torn, Margaret S.
dc.contributor.author
Wiesenberg, Guido L.B.
dc.contributor.author
Schmidt, Michael W.I.
dc.date.accessioned
2021-03-15T11:44:29Z
dc.date.available
2021-03-13T04:35:41Z
dc.date.available
2021-03-15T11:44:29Z
dc.date.issued
2021-05
dc.identifier.issn
0038-0717
dc.identifier.issn
1879-3428
dc.identifier.other
10.1016/j.soilbio.2021.108185
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/474255
dc.identifier.doi
10.3929/ethz-b-000474255
dc.description.abstract
Increasing global temperatures have the potential to stimulate decomposition and alter the composition of soil organic matter (SOM). However, questions remain about the extent to which SOM quality and quantity along the soil profile may change under future warming. In this study we assessed how +4 °C whole-soil warming affected the quantity and quality of SOM down to 90 cm depth in a mixed-coniferous temperate forest using biomarker analyses. Our findings indicate that 4.5 years of soil warming led to divergent responses in subsoils (>20 cm) as compared to surface soils. Warming enhanced the accumulation of plant-derived n-alkanes over the whole soil profile. In the subsoil, this was at the expense of plant- and microorganism-derived fatty acids, and the relative abundance of SOM molecular components shifted from less microbially transformed to more transformed organic matter. Fine root mass declined by 24.0 ± 7.5% with warming over the whole soil profile, accompanied by reduced plant-derived inputs and accelerated decomposition of aromatic compounds and plant-derived fatty acids in the subsoils. Our study suggests that warming accelerated microbial decomposition of plant-derived inputs, leaving behind more degraded organic matter. The non-uniform, and depth dependent SOM composition and warming response implies that subsoil carbon cycling is as sensitive and complex as in surface soils.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Whole soil warming
en_US
dc.subject
Deep soil organic matter
en_US
dc.subject
Biomarker
en_US
dc.subject
Alkanes
en_US
dc.subject
Fatty acids
en_US
dc.subject
Decomposition
en_US
dc.title
Warming promotes loss of subsoil carbon through accelerated degradation of plant-derived organic matter
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2021-02-20
ethz.journal.title
Soil Biology and Biochemistry
ethz.journal.volume
156
en_US
ethz.journal.abbreviated
Soil biol. biochem.
ethz.pages.start
108185
en_US
ethz.size
10 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03982 - Six, Johan / Six, Johan
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03982 - Six, Johan / Six, Johan
ethz.date.deposited
2021-03-13T04:35:51Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-03-15T11:44:42Z
ethz.rosetta.lastUpdated
2022-03-29T05:46:30Z
ethz.rosetta.versionExported
true
ethz.COinS
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