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dc.contributor.author
Paillex, Amael
dc.contributor.author
Castella, Emmanuel
dc.contributor.author
Zu Ermgassen, Philine
dc.contributor.author
Gallardo, Belinda
dc.contributor.author
Aldridge, David C
dc.date.accessioned
2018-02-21T13:08:54Z
dc.date.available
2018-01-18T13:53:47Z
dc.date.available
2018-02-21T13:08:54Z
dc.date.issued
2017-10
dc.identifier.issn
2150-8925
dc.identifier.other
10.1002/ecs2.1972
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/230865
dc.identifier.doi
10.3929/ethz-b-000230865
dc.description.abstract
Water temperature is known to influence individual animal metabolism, development, and reproduction. However, in situ studies aiming to demonstrate the link between water temperature and community structure in complex ecosystems such as large river floodplains are still rare. In particular, we have little indication about how an increase in temperature affects the density of native and invasive species within a community. Large river floodplains cover a varied range of environmental conditions, are rich in species, and therefore potentially useful ecosystems to study the effect of water temperature at the community level. Moreover, as freshwater communities are increasingly impacted by global warming and biological invasions, an improved understanding of the possible interaction between these drivers would be beneficial. First, we studied during two years the thermal heterogeneity of 36 sites in a large river (Rhone) floodplain. Second, we compared the thermal regimes of sites having different levels of hydrological connectivity with the main river channel. Third, we studied the combined and separated effects of the thermal regime and the hydrological connectivity on the presence and densities of native and non-native species of macroinvertebrates. The studied large river floodplain covered a wide range of thermal regimes, with some sites displaying a yearlong constant temperature of about 10°C, whereas others experienced thermal amplitude of over 25°C. The thermal regime was independent of the level of hydrological connectivity of the sites. The increase in hydrological connectivity had a significant and positive effect on the richness of non-native species within sites. The thermal regime had a positive influence on the density of non-native species but no effect on the total density of native taxa within communities. This study showed that large river floodplains possess a wide range of thermal conditions and that the increase in water temperature can have a positive influence on the presence of non-native populations of macroinvertebrates. This study provides a first set of empirical results to establish models predicting the effect of increasing temperatures on the establishment of non-native and native species in a complex ecosystem and underline the problem of biological invasions under climate change.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
ESA
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.subject
air-water temperature
en_US
dc.subject
alien species
en_US
dc.subject
climatic change
en_US
dc.subject
ecosystem management
en_US
dc.subject
generalized additive models
en_US
dc.subject
lateral connectivity
en_US
dc.subject
Rhone River
en_US
dc.subject
species distribution model
en_US
dc.subject
thermal pollution
en_US
dc.title
Large river floodplain as a natural laboratory: non‐native macroinvertebrates benefit from elevated temperatures
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2017-10-19
ethz.journal.title
Ecosphere
ethz.journal.volume
8
en_US
ethz.journal.issue
10
en_US
ethz.pages.start
e01972
en_US
ethz.size
16 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.publication.place
Regensdorf
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
en_US
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
2018-01-18T13:53:48Z
ethz.source
BATCH
ethz.eth
no
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-02-21T13:09:00Z
ethz.rosetta.lastUpdated
2022-03-28T19:14:43Z
ethz.rosetta.versionExported
true
ethz.COinS
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