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Title:Vegetation, hydrological and morphological dynamics of natural islands in the Danube Delta
Authors:ID Chirilǎ, Simona Dumitrita (Author)
ID Bănescu, Alexandru (Author)
ID Trifanov, Cristian (Author)
ID Doroftei, Mihai (Author)
ID Covaliov, Silviu (Author)
Files:URL URL - Source URL, visit https://ojs.zrc-sazu.si/hacquetia/article/view/14118/12487
 
.pdf PDF - Presentation file, download (2,87 MB)
MD5: D1F153A6734195654FD014FA4F4C9155
 
Language:English
Organization:Logo ZRC SAZU - The Research Centre of the Slovenian Academy of Sciences and Arts
Abstract:The Danube Delta is a unique ecosystem located in southeastern Romania. Within this ecosystem, hydrological and morphological dynamics have an important role in maintaining biodiversity. The study aimed to analyze the vegetation, hydrological factors, and morphological dynamics of seven islands in the Danube Delta. The study was carried out during 2023–2024 at Isaccea (three islands), Dunavăț (three islands) and Dranov (one island) in all four seasons. Phytocoenological relevés were carried out for the vegetation analysis, and the SonTek RiverSurveyor M9 equipment was used for the hydrological analysis. The analysis of island dynamics was carried out through morphometric methods, using ANCPI orthophotos (2004 and 2021) and Landsat satellite images (2010). In the seven islands, six associations from the Artemisietea vulgaris, Lemnetea, Phragmito-Magnocaricetea, and Salicetea purpureae classes were found. The hydrological analysis indicated seasonal fluctuations in water level, flow, and velocity, with significant increases in the autumn and winter, especially at Isaccea. The hydrological regime has an important role in the morphodynamic modelling of the Danube Delta islands, indicating the river’s ability to induce rapid transformations through sedimentation and erosion processes. The island’s location influences this interaction, the river flow dynamics and human interventions such as the rectification of meanders.
Keywords:alluvial islands, Danube River, hydrological dynamics, morphodynamic processes, wetlands
Publication status:Published
Publication version:Version of Record
Publication date:01.06.2025
Year of publishing:2025
Number of pages:str. 261-274
Numbering:letn. 24, št. 2
PID:20.500.12556/DiRROS-25605 New window
UDC:556
ISSN on article:1581-4661
DOI:10.3986/hacq-2025-0019 New window
COBISS.SI-ID:254974467 New window
Copyright:Imetniki avtorskih pravic na prispevkih so avtorji
Publication date in DiRROS:24.01.2026
Views:250
Downloads:95
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Record is a part of a journal

Title:Hacquetia
Publisher:ZRC SAZU, Biološki inštitut Jovana Hadžija
ISSN:1581-4661
COBISS.SI-ID:120166144 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.06.2025
Applies to:VoR

Secondary language

Language:Slovenian
Abstract:Delta Donave je edinstven ekosistem v jugovzhodni Romuniji. Za ohranjanje biodiverzitete tega ekosistema sta pomembni hidrološka in morfološka dinamika. V raziskavi smo analizirali vegetacijo, hidrološke dejavnike in morfološko dinamiko sedmih otokov v letih 2023 in 2024 v območjih Isaccea (trije otoki), Dunavăț (trije otoki) in Dranov (en otok) v vseh štirih letnih časih. Za analizo vegetacije smo naredili fitocenološke popise, opremo SonTek RiverSurveyor M9 pa smo uporabili za hidrološke analize. Analizo dinamike otokov smo naredili z morfometrijsko metodo z uporabo ANCPI ortofoto posnetki (2004 in 2021) in Landsat satelitskimi posnetki (2010). Na sedmih otokih smo ugotovili šest asociacij iz razredov Artemisietea vulgaris, Lemnetea, Phragmito-Magnocaricetea in Salicetea purpureae. Hidrološka analiza je pokazala sezonsko nihanje vodostaja, toka in hitrosti z značilnim porastom jeseni in pozimi, še posebej na območju Isaccea. Hidrološki režim je pomemben pri modeliranju morfodinamike otokov v delti Donave in kaže na sposobnost reke, da povzroča hitro transformacijo s sedimetacijo in erozijo. Na to interakcijo vpliva lokacija otoka, dinamika rečnega toka in človekove dejavnosti, kot je uravnavanje meandrov.
Keywords:aluvialni otoki, reka Donava, hidrološka dinamika, morfodinamični procesi, mokrišča


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