Show simple item record

dc.contributor.author
LaCroix, Rachelle E.
dc.contributor.author
Walpen, Nicolas
dc.contributor.author
Sander, Michael
dc.contributor.author
Tfaily, Malak M.
dc.contributor.author
Blanchard, Jeffrey L.
dc.contributor.author
Keiluweit, Marco
dc.date.accessioned
2021-02-12T14:40:36Z
dc.date.available
2021-01-12T14:07:57Z
dc.date.available
2021-02-12T14:40:36Z
dc.date.issued
2021-01-12
dc.identifier.issn
2328-8930
dc.identifier.other
10.1021/acs.estlett.0c00748
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/461741
dc.description.abstract
Globally rising temperatures increase microbial activity, accelerating decomposition of soil organic matter (SOM). SOM has numerous functional capabilities, of which the capacity to engage in reduction–oxidation reactions (or redox capacity) affects nearly all soil biogeochemical processes. How warming-induced microbial decomposition affects the redox capacity of SOM and its functional role in biogeochemical processes is largely unknown. We examined the impact of 15 years of in situ soil warming on the redox capacities of water-extractable organic matter (WEOM). Combining mediated electrochemical analysis with high-resolution mass spectrometry, we assessed the molecular basis for changes in the redox capacities of WEOM within heated (5°C above ambient) and non-heated organic and mineral temperate forest soils. Chronic soil warming significantly decreased both concentrations and inherent electron-accepting and -donating capacities of WEOM, particularly in the mineral soil. This decline was best explained by decreases in the relative abundance of aromatic and phenolic compounds, suggesting that enhanced microbial decomposition of redox-active moieties caused the decrease in redox capacity. Our findings suggest that global warming not only diminishes the size of the soil carbon reservoir but might also negatively alter the ability of SOM to participate in critical redox processes such as microbial respiration, nutrient cycling, or contaminant degradation. © 2020 American Chemical Society.
en_US
dc.language.iso
en
en_US
dc.publisher
American Chemical Society
en_US
dc.title
Long-Term Warming Decreases Redox Capacity of Soil Organic Matter
en_US
dc.type
Journal Article
dc.date.published
2020-11-25
ethz.journal.title
Environmental Science & Technology Letters
ethz.journal.volume
8
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
Env Sci Tech Lett
ethz.pages.start
92
en_US
ethz.pages.end
97
en_US
ethz.identifier.scopus
ethz.publication.place
Washington, DC
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::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::03850 - McNeill, Kristopher / McNeill, Kristopher
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::03850 - McNeill, Kristopher / McNeill, Kristopher
en_US
ethz.date.deposited
2021-01-12T14:08:05Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-02-12T14:40:49Z
ethz.rosetta.lastUpdated
2021-02-12T14:40:49Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Long-Term%20Warming%20Decreases%20Redox%20Capacity%20of%20Soil%20Organic%20Matter&rft.jtitle=Environmental%20Science%20&%20Technology%20Letters&rft.date=2021-01-12&rft.volume=8&rft.issue=1&rft.spage=92&rft.epage=97&rft.issn=2328-8930&rft.au=LaCroix,%20Rachelle%20E.&Walpen,%20Nicolas&Sander,%20Michael&Tfaily,%20Malak%20M.&Blanchard,%20Jeffrey%20L.&rft.genre=article&rft_id=info:doi/10.1021/acs.estlett.0c00748&
 Search print copy at ETH Library

Files in this item

FilesSizeFormatOpen in viewer

There are no files associated with this item.

Publication type

Show simple item record