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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

<a href="/cs/project/SS03010279" target="_blank" >SS03010279: Optimalizace managementu dolního úseku Labe s ohledem na přítomnost biotopu 3270 a zlepšení hydromorfologického stavu na základě mezioborové studie.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

AUC GEOGRAPHICA

ISSN

0300-5402

e-ISSN

2336-1980

Svazek periodika

—

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

108-119

Kód UT WoS článku

001263135700007

EID výsledku v databázi Scopus

2-s2.0-85197939146