Short-term geomorphic adjustments of bars in the Elbe, a large regulated river in Czechia

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F24%3AA25038G3" target="_blank" >RIV/61988987:17310/24:A25038G3 - isvavai.cz</a>
Result on the web
<a href="http://www.karolinum.cz/doi/10.14712/23361980.2024.7" target="_blank" >http://www.karolinum.cz/doi/10.14712/23361980.2024.7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14712/23361980.2024.7" target="_blank" >10.14712/23361980.2024.7</a>

Result language
angličtina
Original language name
Short-term geomorphic adjustments of bars in the Elbe, a large regulated river in Czechia
Original language description
Gravel and sandy bars constitute critical components of river channel morphology, yet their morphodynamics in large, heavily regulated rivers during periods without significant flows remain poorly understood. This study investigates changes in surface heterogeneity and sediment sizes through a two-year field monitoring program, focusing on the frontal, central, and distal sections of four bars along the Elbe River in Czechia. Despite the absence of high-flow events reaching at least a one-year recurrence interval, observable changes in surface heterogeneity and sediment sizes were noted across all bars. However, the changes did not follow a uniform pattern; individual bars and their sections exhibited varying degrees of surface sediment coarsening or fining, alongside increases or decreases in surface heterogeneity. These findings highlight the necessity for site-specific management strategies for individual bars within such human-impacted rivers, recognizing their value as ecological hotspots. Furthermore, the methodology presented in this study may serve as a blueprint for the cost-effective monitoring of bar dynamics in channelized river sections.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10500 - Earth and related environmental sciences

Project
<a href="/en/project/SS03010279" target="_blank" >SS03010279: Management optimisation of the Elbe lower reach with respect to the presence of 3270 biotope and improvement of the hydromorphological state as based on an interdisciplinary study.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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