Keywords
rare fraction
herbaceous plants
taxonomic composition
sozological analysis
evaluation of stability
How to Cite
Abstract
Objective – to conduct a system analysis, establish a sozological status and determine the ability to reproduce natural and introduced rare species of herbaceous plants from the Olexandria arboretum collection.
Material and methods. On the inventory studies it was found the species composition of natural and cultured rare species due to the Catalogue of herbaceous plants we find out the year of introduction. Data of the research of sozological status have been studied by the IUCN Red List of Threatened Plants…(2016), European Red List of vascular plants (2011), the Red Book of Ukraine (2009), the Regional list of Kyiv Region (2012).
Results. Rarity faction of herbaceous plants of collection of the dendrological park Olexandria has 151 species consisting of 3 divisions, 4 classes, 48 families and 99 genera, to the class Magnoliopsida belong 84 (56 %) species, to class Liliopsida – 62. According to results of sozological analysis, 57 (38 %) species are protected by the Red List of IUCN, 48 (32 %) – by European Red List, 75 (50 %) – by the Red Book of Ukraine, 24 (16 %) – by the Regional lists of Kyiv region. For most species the rarity status in international lists is classified as LC (which cause the least concern). Among the species that are protected by the Red Book of Ukraine 1 species is classified as “extinct in nature”, 11 species as “endangered”, 28 as “vulnerable”, 16 as “rare”; and 18 species as “invaluable”, 6 species are relicts, 13 – endemics, 2 – endemic and relict. 8 species are protected species by 3 lists, 43 species are included in to the 2 lists. Among rare species of herbaceous plants 54 (36 %) species are of local origin, 97 species are introduced. Under conditions of the dendrological park Olexandria they preserved innate life form, 109 (72 %) species among them produce spores and seeds annually.
Conclusions. According to evaluation of stability of introduction species in the dendrological park Olexandria the most stable are 18 (19 %) species, are renewed by self – and seedling and vegetatevely, can form the introduction populations, 30 (31 %) species are perspective for growing in the conditions of the dendropark Olexandria, their number doesn’t decrease, and 7 (7 %) species are unpromising or has a little perspective, numbers of which are decrease. The species that are cultivated for less than 5 years are included in this group too.
References
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