Page 201 - Наукові записки Державного природознавчого музею, 2025 Вип. 41

200 Борсукевич Л.М.

Dřevojan, P., Čeplová, N., Štĕpánková, P. & Axmanová, I. (2023) Life form. Published on the
Internet https://floraveg.eu. Retrieved in March 2025
Iemelianova S., Borsukevych L. 2025. Syntaxonomy of the class Alnetea glutinosae in Ukraine: a
critical revision and new suggestions. Vegetation classification and survey. 6. P. 13-36.

Ботанічний сад Львівського національного університету імені Івана Франка;
Інститут екології Карпат НАН України, м. Львів
e-mail: lborsukiewicz@gmail.com

Borsukevych L.M.
Floristic structure of vegetation of the class Salicetea purpureae Moor 1958 in Ukraine
The paper presents results that highlight the floristic structure of the vegetation of the class
Salicetea purpureae in Ukraine. The analysis of the coenoflora of the class was carried out by using
the database based on geobotanical releves. They were made by the author in all regions of Ukraine
on the base of the Brown-Blanquet approach. The coenoflora of the class is analyzed for the first time.
It was established that it includes 832 species of vascular plants, belonging to 380 genera, 98 families,
6 classes and 5 divisions. In angiosperms, the class Magnoliopsida includes 643 species (79%) and is
characterized by high species richness. The class Liliopsida is represented, respectively, by 169 species.
The spectrum of the three leading families includes Asteraceae (113 species, 13,5%), Poaceae (78
species, 9.4%), Cyperaceae (40 species, 4.8%), which is typical for the flora of northeastern Eurasia.
Analysis of biomorphs shows, that hemicryptophytes include the biggest number of species (64.4%).
Other groups are significantly smaller. From the ecological point of view we analysed the edaphic
conditions: trophicity, acid regime, content of nitrogen in the soil and relation to the hydrological
regime. In general, the ecological spectrum of the flora of the class indicates a wide range of their
ecological tolerance to various abiotic factors. Many species have a wide ecological amplitude, due to
a high level of adaptation to the aquatic, dynamic in space and time, environment. Among hydromorphs,
mesophytes (33.5%) dominate. Analysis of the ecological structure in relation to the acid regime
showed that the biggest is the group of subacidophiles (46.5%) and neutrophils (42.8%). In relation to
trophicity, semieutrophs (55.9%) predominate, in relation to the content of mineral nitrogen in the soil,
groups of geminitrophites (43.9%) and nitrophytes (38.8%) are the biggest. There is a small number of
narrow-amplitude species in each group. They are related with specific ecological conditions. The
cenoflora of the class contains 150 adventive species. Among them, 84 (56%) are kenophytes, species
that have been recently introduced to the territory of Ukraine, and 66 (44%) are archaeophytes that
have been introduced long time ago. This correlation is typical for adventive fractions of many types of
vegetation and indicates the current active processes of enrichment of the flora with new invasive
species.
Keywords: class Salicetea purpureae, coenoflora, biomorphological structure, ecological
structure, adventive species, floodplain, Ukraine.