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Title:Eco-coenotic analysis of pasture areas from the Danube Delta, Romania
Authors:ID Chirilǎ, Simona Dumitrita (Author)
ID Covaliov, Silviu (Author)
ID Răileanu, Stefan (Author)
ID David, Livia Oana (Author)
ID Doroftei, Mihai (Author)
ID Burada, Adrian (Author)
ID Făgăras, Marius (Author)
Files:URL URL - Source URL, visit https://ojs.zrc-sazu.si/hacquetia/article/view/13633/12095
 
.pdf PDF - Presentation file, download (4,17 MB)
MD5: 71EAF187494481D16E183BD35007A0BB
 
Language:English
Organization:Logo ZRC SAZU - The Research Centre of the Slovenian Academy of Sciences and Arts
Abstract:The study investigated the floristic composition of 12 pasture areas in the Danube Delta, and their neighbouring regions, and the relationships between the floristic composition and the environmental variables. The vegetation analysis was carried out based on the mean percentage values corresponding to the scale developed by the Braun-Blanquet. For the syntaxonomic assignment, 50 phytocoenological relevés were made. The relevés were analyzed using Agglomerative Hierarchical Clustering (flexible β algorithm and Bray-Curtis dissimilarity). The relationship between floristic composition and environmental variables was assessed using Detrended Correspondence Analysis (DCA) and Canonical Correlation Analysis (CCA) in CANOCO. Our results showed that the analyzed species are mostly mesoxerophilic, oligo-mesotrophic, and poorly exploited as fodder, with moderate tolerance to grazing and medium anthropogenic influence, predominantly urbanophobic. Numerical analysis identified eight well-defined communities, which correspond to associations described in the taxonomic literature, based on their diagnostic species. The predominant plant association is Hordeo murini-Cynodontetum dactyloni. The variation of the floristic composition is influenced by annual precipitation.
Keywords:Danube Delta, agro-biological indices, vegetation analysis, phytocoenological relevés, annual precipitation, Cynodon dactylon
Publication status:Published
Publication version:Version of Record
Publication date:07.08.2024
Year of publishing:2025
Number of pages:str. 25-40
Numbering:letn. 24, št. 1
PID:20.500.12556/DiRROS-25590 New window
UDC:582.546:581.55(498.81)
ISSN on article:1581-4661
DOI:10.3986/hacq-2025-0005 New window
COBISS.SI-ID:230711811 New window
Copyright:Imetniki avtorskih pravic na prispevkih so avtorji
Publication date in DiRROS:24.01.2026
Views:233
Downloads:80
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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

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:N4-0201
Name:Varovanje odpornosti kmetijskih ekosistemov na podnebne spremembe z učinkovitim opraševanjem in trajnostnim čebelarjenjem

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:07.08.2024
Applies to:VoR

Secondary language

Language:Slovenian
Abstract:V raziskavi smo preučili floristično sestavo 12 pašnih območij v delti Donave in sosednjih regijah ter odnos med vrstno sestavo in okoljskimi spremenljivkami. Analizo vegetacije smo naredili s pokrovnimi vrednostmi Braun-Blanquetove skale, spremenjenimi v povprečne odstotne vrednosti. Za sintaksonomsko opredelitev smo naredili 50 vegetacijskih popisov. Popise smo analizirali z združevalnim hierarhičnim grupiranjem (fleksibilni β algoritem in Bray-Curtisov koeficient različnosti). Odnos med floristično sestavo in okoljskimi spremenljivkami smo opredelili s korespondenčno analizo z odstranjenim trendom in s kanonično korelacijsko analizo (CCA) v programu CANOCO. Rezultati so pokazali, da so obravnavane vrste predvsem mezokserofilne, olifo-mezotrofne in imajo slabo hranilno vrednost, z zmerno odpornostjo na pašo in srednjo na antropogeni vpliv, prevladujejo urbanofobne vrste. Z numerično analizo smo dobili osem dobro opredeljenih združb na osnovi značilnih vrst, ki odgovarjajo v literaturi opisanim asociacijam. Prevladuje asociacija Hordeo murini-Cynodontetum dactyloni. Variabilnost v vrstni sestavi je odvisna predvsem od letne količine padavin.
Keywords:delta Donave, agrobiološki indeksi, vegetacijska analiza, fitocenološki popisi, letna količina padavin, Cynodon dactylon


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