20.500.12556/DiRROS-25590 Eco-coenotic analysis of pasture areas from the Danube Delta, Romania 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. 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. Danube Delta agro-biological indices vegetation analysis phytocoenological relevés annual precipitation Cynodon dactylon delta Donave agrobiološki indeksi vegetacijska analiza fitocenološki popisi letna količina padavin Cynodon dactylon true false true Angleški jezik Slovenski jezik Imetniki avtorskih pravic na prispevkih so avtorji Neznano 2026-01-24 10:59:04 2026-01-24 10:59:04 2026-02-19 08:10:42 0000-00-00 00:00:00 2025 0 0 str. 25-40 št. 1 letn. 24 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-08-07 582.546:581.55(498.81) 1581-4661 10.3986/hacq-2025-0005 230711811 https://ojs.zrc-sazu.si/hacquetia/article/view/13633/12095 1 526c0a59-f90b-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38776 HACQUETIA_24-1_2025_3_Chirilă+et+al.pdf HACQUETIA_24-1_2025_3_Chirilă+et+al.pdf 1 71EAF187494481D16E183BD35007A0BB d4b5582d9541bbab61d1039d6875f7300020da5c0302272692b62008c3a0768f 58054644-f90c-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38777 Znanstvenoraziskovalni center Slovenske akademije znanosti in umetnosti Hacquetia 0 0 0