Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal. 2018. № 3(27). P. 10—20
03.00.00 BIOLOGICAL SCIENCES
UDC 582.987
Yusupova Oksana Vaslyamovna, Postgraduate student
South Ural Botanical Garden-Institute of Ufa Scientific Centre of Russian Academy of Sciences Abramova Larisa Mikhailovna, Doctor of Biological Sciences, Professor,
South Ural Botanical Garden-Institute of Ufa Scientific Centre of Russian Academy of Sciences Golovanov Yaroslav Mikhailovich, Candidate of Biological Sciences, Research Associate
South Ural Botanical Garden-Institute of Ufa Scientific Centre of Russian Academy of Sciences Yusupov Ildar Ravilevich, Candidate of Biological Sciences, Research Scientist
South Ural State Nature Reserve
TO BIOLOGY AND ECOLOGY OF RARE SPECIES Helianthemum nummularium (L.) Mill. IN THE SOUTH URAL RESERVE
Abstract
The article presents the results of three-year study of nemoral-steppe species Helianthemum nummularium (L.) Mill. in the territory of South-Ural nature reserve, connected with the rocky slope of a low ridge, where it was first discovered in 2014 as a result of syntaxonomic analysis of cenoses with the participation of the studied species related to the community Helianthemum nummularium within the class Molinio-Arrhenatheretea, reflecting an intermediate position between the meadows of normal moisture and Stephenie meadows. The single-factor dispersion analysis showed that the weather conditions of the growing season significantly affect the majority of parameters of sunflower plants. The living conditions of the studied species are characterized by a pronounced continental climate due to the geographical location of the Ural mountainous region. The weather conditions of the vegetation year have a significant impact in the spring-autumn period, when there are significant temperature changes. Frostbite occurs in those parts of plants that lose their snow cover during the spring active solar radiation or not yet covered with snow in the fall. In summer frosts are also dangerous for plants, as the development of generative organs is inhibited, thus reducing flowering and seed productivity of plants and the population as a whole, which has an adverse effect on the seed renewal of this species.
Key words
Helianthemum nummularium (L.) Mill. South Ural nature reserve, cenopopulation, phytocenotic time, single-factor dispersion analysis.
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Bibliography link to this article:
Yusupova O. V., Abramova L. M., Golovanov Ya. M., Yusupov I. R. To biology and ecology of rare species Helianthemum nummularium (L.) Mill. in the South Ural reserve. Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2018, no. 3 (27), pp. 10—20. DOI: https://doi.org/10.32516/2303-9922.2018.27.2.