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Contemporary Problems of Ecology

2015 year, number 4

Peculiarities of Maintaining the Hypericum perforatum L. Coenopopulation Size on the Dry Meadow During the Dry Season

S. A. DUBROVNAYA, L. U. MAVLYUDOVA
Kazan Federal University, 420000, Kazan, Kremlevskaya str., 18
Keywords: Hypericum perforatum L, root sucker plant, ramet, vegetative growth, ontogenetic structure of a coenopopulation

Abstract

The mechanism of conservation of the Hypericum perforatum L. coenopopulation size was studied on a dry meadow on the territory of the Republic of Tatarstan during the dry seasons in 2010–2012. On the dry meadow the coenopopulation size was increased with the help of root sprouts. The ramets formed as soon as the conditions were optimal. There was no correspondence detected between the vegetative growth and climatic factors during the season. On the other hand, the ontogenetical structure of the coenopopulation and reproduction processes did depend on climatic conditions. Flexibility of the vegetative growth process provided for the stable size of the coenopopulation and the fluctuation type of its dynamics.