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dc.contributor.author
Esperschütz, Jürgen
dc.contributor.author
Pérez-De-Mora, Alfredo
dc.contributor.author
Schreiner, Karin
dc.contributor.author
Welzl, Gerhard
dc.contributor.author
Buegger, Franz
dc.contributor.author
Zeyer, Josef
dc.contributor.author
Hagedorn, Frank
dc.contributor.author
Munch, Jean Charles
dc.contributor.author
Schloter, Michael
dc.date.accessioned
2018-09-26T11:11:32Z
dc.date.available
2017-06-09T20:02:51Z
dc.date.available
2018-09-26T11:11:32Z
dc.date.issued
2011
dc.identifier.other
10.5194/bg-8-3283-2011
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/47231
dc.identifier.doi
10.3929/ethz-b-000047231
dc.description.abstract
Microbial food webs are critical for efficient nutrient turnover providing the basis for functional and stable ecosystems. However, the successional development of such microbial food webs and their role in "young" ecosystems is unclear. Due to a continuous glacier retreat since the middle of the 19th century, glacier forefields have expanded offering an excellent opportunity to study food web dynamics in soils at different developmental stages. In the present study, litter degradation and the corresponding C fluxes into microbial communities were investigated along the forefield of the Damma glacier (Switzerland). 13C-enriched litter of the pioneering plant Leucanthemopsis alpina (L.) Heywood was incorporated into the soil at sites that have been free from ice for approximately 10, 60, 100 and more than 700 years. The structure and function of microbial communities were identified by 13C analysis of phospholipid fatty acids (PLFA) and phospholipid ether lipids (PLEL). Results showed increasing microbial diversity and biomass, and enhanced proliferation of bacterial groups as ecosystem development progressed. Initially, litter decomposition proceeded faster at the more developed sites, but at the end of the experiment loss of litter mass was similar at all sites, once the more easily-degradable litter fraction was processed. As a result incorporation of 13C into microbial biomass was more evident during the first weeks of litter decomposition. 13C enrichments of both PLEL and PLFA biomarkers following litter incorporation were observed at all sites, suggesting similar microbial foodwebs at all stages of soil development. Nonetheless, the contribution of bacteria, especially actinomycetes to litter turnover became more pronounced as soil age increased in detriment of archaea, fungi and protozoa, more prominent in recently deglaciated terrain.
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Microbial food web dynamics along a soil chronosequence of a glacier forefield
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2011-11-11
ethz.journal.title
Biogeosciences
ethz.journal.volume
8
en_US
ethz.journal.issue
11
en_US
ethz.pages.start
3283
en_US
ethz.pages.end
3294
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
006289717
ethz.publication.place
Göttingen
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::03335 - Zeyer, Josef (emeritus)
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::03335 - Zeyer, Josef (emeritus)
ethz.date.deposited
2017-06-09T20:03:21Z
ethz.source
ECIT
ethz.identifier.importid
imp59364f0f54ed057390
ethz.ecitpid
pub:77779
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-14T23:37:28Z
ethz.rosetta.lastUpdated
2019-01-02T14:14:43Z
ethz.rosetta.versionExported
true
ethz.COinS
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