ВИДОВИЙ СКЛАД ГІДРОФІЛЬНОЇ ФЛОРИ Р. СТИР В МЕЖАХ РІВНЕНСЬКОЇ ОБЛАСТІ
Journal Title: World Science - Year 2018, Vol 2, Issue 2
Abstract
The hydrophilic flora of the Styr river within Rivnenska oblast was investigated. A thorough analysis of the species composition of the hydrophilic flora which includes 125 species, 74 genera and 38 families was carried out. The most numerous were identified 7 families: Poaceae (11 species), Potamogetonaceae (10 species), Asteraceae (9 species), Cyperaceae (8 species), Polygonaceae (8 species), Ranunculaceae and Salicaceae. The main indicators of the systematic structure of the investigated hydrophilic flora were analyzed: the quantitative composition of the main taxonomic units and the correlation between them, the most important proportions, the type of saturation of the spectra of the leading families and genera of individual areas of the Styr river within Rivnenska oblast. Even at relatively small intervals of the river there is a noticeable heterogeneity of the floristic composition. Most of the identified species in their life cycle are mainly associated with coastal and moor vegetation, with only a few species almost completely adapted to aquatic environments. The ecological structure is dominated by trichohyrophytes (20.8 %), uliginosophytes (18.4 %), and hatchogyrophytes (13.6 %). In the structure of life forms the most numerous are hemicryptophytes (31,2 %) and hydrophytes (24 %).
Authors and Affiliations
І. Л. Толочик
Keywords
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