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dc.contributor.author
Antonetti, Manuel
dc.contributor.author
Hoppler, Luca
dc.contributor.author
Tonolla, Diego
dc.contributor.author
Vanzo, Davide
dc.contributor.author
Schmid, Martin
dc.contributor.author
Doering, Michael
dc.date.accessioned
2023-04-18T12:42:38Z
dc.date.available
2022-09-09T18:10:02Z
dc.date.available
2022-09-13T19:38:01Z
dc.date.available
2023-04-18T12:42:38Z
dc.date.issued
2023-03
dc.identifier.issn
1535-1459
dc.identifier.issn
1535-1467
dc.identifier.other
10.1002/rra.4043
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/569883
dc.identifier.doi
10.3929/ethz-b-000569883
dc.description.abstract
Storage hydropower plants, which are an important component of energy production in Switzerland, can lead to hydro- and thermopeaking, affecting river habitats and organisms. In this study, we developed an approach for integrating water temperature simulations into a habitat model to assess the impact of both hydro- and thermopeaking on the availability of suitable fish habitats. We focused on the habitat requirements of juvenile brown trout (Salmo trutta) in a semi-natural braided floodplain along the Moesa River (Southern Switzerland) in early summer. First, we defined different scenarios (with and without hydropeaking) based on the local hydrological and meteorological conditions. Second, we used a two-dimensional depth-averaged hydro- and thermodynamic model to simulate the spatial distributions of water depth, flow velocity, and water temperature. Third, we applied generalized preference curves for juvenile brown trout to identify hydraulically suitable habitats, and developed a new index to assess the availability of thermally suitable habitats. Finally, we quantified the extent to which hydraulically and thermally suitable habitats overlap in space and time. During both base and peak flow phases, most of the hydraulically and thermally suitable habitats are located in the side channels. High flow conditions combined with strong cold-thermopeaking lead to a higher thermal heterogeneity. However, disconnected habitats originate in the dewatering zone, increasing the risk of stranding as well as thermal stress. By helping to better understand the effects of thermopeaking on the availability of fish habitats, our approach could contribute to the design and evaluation of ecological restoration in hydropeaking rivers.
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-nc-nd/4.0/
dc.subject
brown trout
en_US
dc.subject
habitat suitability curves
en_US
dc.subject
hydropeaking
en_US
dc.subject
Salmo trutta
en_US
dc.subject
Switzerland
en_US
dc.subject
thermodynamic simulation
en_US
dc.subject
thermopeaking
en_US
dc.subject
thermoregulation
en_US
dc.title
Integrating two-dimensional water temperature simulations into a fish habitat model to improve hydro- and thermopeaking impact assessment
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2022-08-30
ethz.journal.title
River Research and Applications
ethz.journal.volume
39
en_US
ethz.journal.issue
3
en_US
ethz.journal.abbreviated
River Res. Appl.
ethz.pages.start
501
en_US
ethz.pages.end
521
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Chichester
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2022-09-09T18:12:57Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2023-04-18T12:42:39Z
ethz.rosetta.lastUpdated
2024-02-02T21:42:02Z
ethz.rosetta.versionExported
true
ethz.COinS
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