20.500.12556/DiRROS-25591 Phytocenotic and ecological characteristics of urban river communities invaded by Pistia stratiotes L. and Pontederia crassipes Mart. in Ukraine Pistia stratiotes L. and Pontederia crassipes Mart. are alien species used in aquarism and aquaculture with a high invasive capacity. The aim of the study was to establish phytocenotic and ecological features of populations of these species in urban river ecosystems. The research was conducted in 2014–2023 on water bodies of the Kharkiv city, Ukraine. Local populations of these species were found in three rivers and vegetation relevés were carried out according to standard phytosociological methods. Alien species occurred with high constancy in the communities of Lemnetea O. de Bolòs et Masclans 1955 and with a minor occurrence in fragments of communities of Phragmito-Magnocaricetea Klika in Klika et Novák 1941. The obtained results of phytoindication show a variability of humidity, aeration, and thermal regime in which the populations of these species occur. The environmental characteristics such as low temperatures, light, salt and nitrogen regime are limiting for occurrence of populations. Climatic and hydrological conditions of the city’s river ecosystems of the city are favorable for spread of communities with the present Pistia stratiotes L. and Pontederia crassipes Mart. Pistia stratiotes L. in Pontederia crassipes Mart. sta tujerodni vrsti, ki se uporabljata v akvaristiki in ribogojstvu z visoko sposobnostjo invazivnosti. Cilj raziskave je bil ugotoviti fitocenotske in ekološke značilnosti populacij teh vrst v urbanih rečnih ekosistemih. Raziskava je bila izvedena v letih 2014–2023 na vodnih telesih mesta Harkov v Ukrajini. Lokalne populacije teh vrst so bile najdene v treh rekah, vegetacijski popisi pa so bili izvedeni po standardnih fitosocioloških metodah. Tujerodne vrste so se z visoko stalnostjo pojavljale v združbah razreda Lemnetea O. de Bolòs et Masclans 1955 in z manjšo stalnostjo v fragmentih združb razreda Phragmito-Magnocaricetea Klika v Klika et Novák 1941. Dobljeni rezultati fitoindikacije kažejo na variabilnosti vlažnosti, zračnosti in toplotnega režima, v katerih se pojavljajo populacije teh vrst. Okoljske razmere, kot so nizke temperature, svetloba, slanost in režim dušika, so omejujoče za uspevanje populacij. Podnebne in hidrološke razmere mestnih rečnih ekosistemov so ugodne za širjenje združb z vrstama Pistia stratiotes L. in Pontederiacrassipes Mart. alien plants macrophytes invasion urban river communities tujerodne vrste makrofiti invazivnost urbane rečne združbe true false true Angleški jezik Slovenski jezik Imetniki avtorskih pravic na prispevkih so avtorji Neznano 2026-01-24 11:19:52 2026-01-24 11:19:52 2026-02-19 08:12:11 0000-00-00 00:00:00 2025 0 0 str. 57-65 št. 1 letn. 24 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-08-28 581.96:581.526.3:556.53(477) 1581-4661 10.3986/hacq-2025-0007 230712323 https://ojs.zrc-sazu.si/hacquetia/article/view/13614/12096 1 399b2501-f90e-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38780 HACQUETIA_24-1_2025_5_Kazarinova.pdf HACQUETIA_24-1_2025_5_Kazarinova.pdf 1 363D287A99235AF47C19A366471A3298 7380437f8db9861020170cc833e320d497371081118cbd006b36c40f299fd5c4 d84553e4-f90e-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38781 Znanstvenoraziskovalni center Slovenske akademije znanosti in umetnosti Hacquetia 0 0 0