Show simple item record

dc.contributor.author
Kuefner, Wolfgang
dc.contributor.author
Hofmann, Andrea
dc.contributor.author
Ossyssek, Stefan
dc.contributor.author
Dubois, Nathalie
dc.contributor.author
Geist, Jürgen
dc.date.accessioned
2020-12-17T15:11:08Z
dc.date.available
2020-12-08T14:25:22Z
dc.date.available
2020-12-17T15:11:08Z
dc.date.issued
2020-10
dc.identifier.issn
1470-160X
dc.identifier.other
10.1016/j.ecolind.2020.106590
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/455354
dc.description.abstract
Alpine mountain lake biota are adapted to harsh conditions making them particularly vulnerable to global change. However, as each mountain lake has a different limnology, there are supposed to be differential responses and degrees of resilience to climate change. In this study, 23 lakes in the Bavarian-Tyrolian Alps differing in altitude, size and geology were examined for their diatom community response to climate warming. Subfossil data were related to 210Pb and 137Cs-dated sediment cores. Correspondence and regression analyses revealed five different assemblage developments depending on lake depth, altitude and origin. Planktic species, especially Cyclotella, dominated deeper and lower-altitude mountain lakes earlier and stronger. This depends on the stability and temperature of the epilimnion which in turn determines the tipping point. Instead, shallow lakes exhibit higher species reorganizations of diatom assemblages. Mountain lakes of lower altitudes or affected by water level fluctuations (WLF) establish complex substrata and Achnanthidium accompanied by epiphytic species or Denticula tenuis in WLF-lakes replace dominating Staurosira. Conversely, alpine shallow lakes lack directional shifts and Staurosira dominate, but approach the tipping point of macrophyte establishment. In a deep doline lake, Diploneis species replace Nitzschia denticula with negligible planktic proportions. In mountain lakes with direct anthropogenic influence, enhanced nutrient supply disguises diatom response to global warming. These findings revealed deep mountain lakes with low nutrient levels to be more resilient to climate change than shallow lakes with a higher trophic status as the onset of the response to rising temperatures is earlier and thus smoother. In conclusion, subfossil diatom analyses can provide a powerful tool for climate change assessment and other anthropogenic impacts on mountain lakes. © 2020 Elsevier Ltd.
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.subject
Climate warming
en_US
dc.subject
Lake types
en_US
dc.subject
Lake depth
en_US
dc.subject
Anthropogenic influence
en_US
dc.subject
β-Diversity
en_US
dc.title
Composition of highly diverse diatom community shifts as response to climate change: A down-core study of 23 central European mountain lakes
en_US
dc.type
Journal Article
dc.date.published
2020-06-17
ethz.journal.title
Ecological Indicators
ethz.journal.volume
117
en_US
ethz.pages.start
106590
en_US
ethz.size
13 p.
en_US
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::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::09596 - Dubois, Nathalie (ehemalig) / Dubois, Nathalie (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)
en_US
ethz.date.deposited
2020-12-08T14:25:43Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2020-12-17T15:11:15Z
ethz.rosetta.lastUpdated
2020-12-17T15:11:15Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Composition%20of%20highly%20diverse%20diatom%20community%20shifts%20as%20response%20to%20climate%20change:%20A%20down-core%20study%20of%2023%20central%20European%20mount&rft.jtitle=Ecological%20Indicators&rft.date=2020-10&rft.volume=117&rft.spage=106590&rft.issn=1470-160X&rft.au=Kuefner,%20Wolfgang&Hofmann,%20Andrea&Ossyssek,%20Stefan&Dubois,%20Nathalie&Geist,%20J%C3%BCrgen&rft.genre=article&rft_id=info:doi/10.1016/j.ecolind.2020.106590&
 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