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dc.contributor.author
Fiskal, Annika
dc.contributor.author
Anthamatten, Eva
dc.contributor.author
Deng, Longhui
dc.contributor.author
Han, Xingguo
dc.contributor.author
Lagostina, Lorenzo
dc.contributor.author
Michel, Anja
dc.contributor.author
Zhu, Rong
dc.contributor.author
Dubois, Nathalie
dc.contributor.author
Schubert, Carsten J.
dc.contributor.author
Bernasconi, Stefano M.
dc.contributor.author
Lever, Mark
dc.date.accessioned
2022-06-22T08:31:45Z
dc.date.available
2020-10-20T08:47:49Z
dc.date.available
2020-10-21T06:40:41Z
dc.date.available
2022-06-22T08:31:45Z
dc.date.issued
2020-09-11
dc.identifier.issn
1810-6277
dc.identifier.issn
1810-6285
dc.identifier.other
10.5194/bg-2020-318
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/446782
dc.identifier.doi
10.3929/ethz-b-000446782
dc.description.abstract
Previous studies have shown that microbially produced methane can be a dominant carbon source of lacustrine sedimentary macrofauna in eutrophic lakes, most likely through grazing on methane-oxidizing bacteria. Here we investigate the contributions of different carbon sources to macrofaunal biomass across five lakes in central Switzerland that range from oligotrophic to highly eutrophic. Macrofaunal communities change with trophic state, with chironomid larvae dominating oligotrophic and tubificid oligochaetes dominating eutrophic lake sediments. 13C-isotopic data suggest that the average contribution of methane-derived carbon to the biomass of both macrofaunal groups is similar, but consistently remains minor, ranging from only ~ 1 % in the oligotrophic lake to at most 12 % in the eutrophic lakes. The remaining biomass can be explained with assimilation of detritus-derived organic carbon. Low abundances of methane cycling microorganisms in macrofaunal specimens, burrows, and surrounding sediment based on 16S ribosomal RNA (rRNA) gene sequences and copy numbers of genes involved in anaerobic and aerobic methane cycling (mcrA, pmoA) support the interpretation of isotopic data. Notably, 16S rRNA gene sequences of macrofauna, including macrofaunal guts, are highly divergent from those in tubes or sediments. Many macrofaunal specimens are dominated by a single 16S rRNA phylotype of Fusobacteria, α-, β-, γ-, or ε-Proteobacteria, Bacteroidetes, or Parcubacteria. This raises the question whether dominant lake macrofauna live in so far uncharacterized relationships with detrital organic matter-degrading bacterial endosymbionts.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Methane-derived carbon
en_US
dc.subject
Benthic macrofauna
en_US
dc.subject
Lacustrine sediment
en_US
dc.subject
Oligochaetes
en_US
dc.subject
Chironomid larvae
en_US
dc.subject
Methane-oxidizing bacteria
en_US
dc.subject
Endosymbionts
en_US
dc.title
Carbon sources of benthic fauna in temperate lakes across multiple trophic states
en_US
dc.type
Working Paper
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Biogeosciences Discussions
ethz.journal.abbreviated
Biogeosci. discuss.
ethz.size
26 p.
en_US
ethz.grant
Role of Bioturbation in Controlling Microbial Community Composition and Biogeochemical Cycles in Marine and Lacustrine Sediments
en_US
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::09496 - Lever, Mark A. (ehemalig) / Lever, Mark A. (former)
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::09596 - Dubois, Nathalie (ehemalig) / Dubois, Nathalie (former)
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::09601 - Stoll, Heather / Stoll, Heather
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::09601 - Stoll, Heather / Stoll, Heather::08806 - Bernasconi, Stefano (Tit.-Prof.)
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::09496 - Lever, Mark A. (ehemalig) / Lever, Mark A. (former)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::09596 - Dubois, Nathalie (ehemalig) / Dubois, Nathalie (former)
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::09601 - Stoll, Heather / Stoll, Heather
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::09601 - Stoll, Heather / Stoll, Heather::08806 - Bernasconi, Stefano (Tit.-Prof.)
en_US
ethz.grant.agreementno
163371
ethz.grant.agreementno
163371
ethz.grant.agreementno
163371
ethz.grant.agreementno
163371
ethz.grant.agreementno
163371
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
Projekte MINT
ethz.grant.program
Projekte MINT
ethz.relation.isPreviousVersionOf
10.3929/ethz-b-000498788
ethz.date.deposited
2020-10-20T08:47:59Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-10-21T06:40:52Z
ethz.rosetta.lastUpdated
2024-02-02T17:28:54Z
ethz.rosetta.versionExported
true
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