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90 Кияк В.Г, Климишин О.С.

Kyyak V., Kobiv Y., Zhilyaev G., Bilonoha V., Dmytrakh R., Mykitchak T., Kobiv V., Nesteruk Y.,
Shtupun V., Gynda L. 2019. Changes in population structure of rare species in the high–mountain
zone of the Ukrainian Carpathians and problems of their conservation. Acta Biol. Univ. Daugavp.
19(1). Р. 77–85.

1 Інститут екології Карпат НАН України, м. Львів
e-mail: vlodkokyjak@ukr.net
2 Дрогобицький державний педагогічний університет імені Івана Франка;
Державний природознавчий музей НАН України, м. Львів
e-mail: trilobit6@gmail.com

Kyyak V.H., Klymyshyn O.S.
Long-term monitoring of the transformation of the alpine community Juncetum
festucosum airoidi in the Chornohora (Ukrainian Carpathians)
An analysis of the structural and dynamic transformations in the alpine grass community Juncetum
festucosum airoid in the town of Pozhizhevska in the Chornohir massif of the Ukrainian Carpathians,
which have occurred during the last 40 years under the influence of climatogenic and demutational
changes, was carried out. The main factors and consequences of its transformation at the level of the
group structure, as well as the age composition, density and projected coverage of the
coenopopulations of grass, hemishrub and shrub species have been established. A significant
redistribution of coenosis-forming positions of species was noted. During this time, the phytocoenosis
was transformed into Juncetum myrtilloso-rhodococcosum. Already in the medium term. in the future,
it is possible to predict drastic changes in the experimental community due to the expansion of its area,
as well as in other alpine communities at their lower limit, subalpine shrub groups Juniperus communis
subsp. alpina. The modern anthropogenic threat of digression of the investigated phytocoenosis, like
many other groups of the alpine zone of the Ukrainian Carpathians, is the uncontrolled harvesting of
Cetraria islandica, which continues intensively even in protected areas.
Keywords: monitoring, transformation of vegetation, demutation, community,
coenopopulation, highlands of Chornohora, Ukrainian Carpathians.