Show simple item record

dc.contributor.author
Siebers, Andre R.
dc.contributor.author
Paillex, Amael
dc.contributor.author
Robinson, Christopher T.
dc.date.accessioned
2022-12-16T13:34:24Z
dc.date.available
2022-12-16T13:34:24Z
dc.date.issued
2022-05
dc.identifier.issn
0024-3590
dc.identifier.issn
1939-5590
dc.identifier.other
10.1002/lno.12059
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/587773
dc.identifier.doi
10.3929/ethz-b-000537920
dc.description.abstract
In high-altitude Alpine streams, seasonal cycles of snowmelt, glacial melt, and rainfall drive variation in the availability of algal food resources. Yet, high-altitude streams also exhibit varying degrees of flow intermittency, ranging from solely winter-drying streams to others that dry periodically throughout summer and autumn. These environmental drivers may interact in different ways to determine the functional trophic base of macroinvertebrates inhabiting high-altitude streams. Here, we estimated the proportional contribution of autochthonous resources to the assimilated diets of benthic macroinvertebrates in 26 headwater streams of Val Roseg, a high Alpine glacial catchment, using stable isotope analysis (δ13C and δ15N) of different macroinvertebrate families and their potential food sources. We compared dietary estimates along a gradient of flow intermittency and across three seasons (Alpine spring, summer, and autumn). Assimilation from autochthonous sources was highest for collector-gatherers and filter feeders in spring, and for grazers in summer. Grazers had higher estimated assimilation from autochthonous sources in intermittent streams than in perennial streams, particularly in summer, while collector-gatherers showed little effect of flow intermittency on dietary estimates. However, responses were highly taxon-specific, with different responses to variation in flow intermittency and season across families within functional groups. Our results suggest that frequent summer-drying events represent tradeoffs between greater access to algal food resources and a higher risk of desiccation, but that differing life history and functional feeding traits across macroinvertebrate taxa drive marked variation in the risks or benefits associated with inhabitants of drying streams.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Seasonal and functional variation in the trophic base of intermittent Alpine streams
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2022-03-07
ethz.journal.title
Limnology and Oceanography
ethz.journal.volume
67
en_US
ethz.journal.issue
5
en_US
ethz.journal.abbreviated
Limnol. oceanogr.
ethz.pages.start
1098
en_US
ethz.pages.end
1110
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Hoboken, NJ
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::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::03705 - Jokela, Jukka / Jokela, Jukka
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::03705 - Jokela, Jukka / Jokela, Jukka
ethz.date.deposited
2022-03-19T04:07:24Z
ethz.source
BATCH
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2022-12-16T13:34:25Z
ethz.rosetta.lastUpdated
2023-02-07T08:54:57Z
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/587505
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/537920
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Seasonal%20and%20functional%20variation%20in%20the%20trophic%20base%20of%20intermittent%20Alpine%20streams&rft.jtitle=Limnology%20and%20Oceanography&rft.date=2022-05&rft.volume=67&rft.issue=5&rft.spage=1098&rft.epage=1110&rft.issn=0024-3590&1939-5590&rft.au=Siebers,%20Andre%20R.&Paillex,%20Amael&Robinson,%20Christopher%20T.&rft.genre=article&rft_id=info:doi/10.1002/lno.12059&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record