On Ecology and Biology of Althaea officinalis L. (Malvaceae) t the Northern Boundary of the Range (Republic of Bashkortostan)
L. M. ABRAMOVA, O. A. KARIMOVA, I. Z. ANDREEVA
Botanical Garden Institute, Ufa Scientific Center, RAS, 450080, Ufa, Mendeleev str., 195, build. 3
abramova.km@mail.ru
Keywords: rare species, the Red Book of the Republic of Bashkortostan, Althaea officinalis L, cenopopulation, demographic structure, vitality, existence optimum
Abstract
Results of the studies of 20 natural cenopopulations (CP) of the rare species Althaea officinalis L.in the Republic of Bashkortostan, growing at the northern boundary of the range, are reported. The demographic structure, morphometric parameters and the vital state of individuals were studied, the optimal conditions of existence were determined. The majority of the studied cenopopulations A. officinalis are distinguished by the low density (1–4 individuals/m2) and incomplete ontogenetic spectrum. The vitality type of the cenopopulations of A. officinalis changes from prosperous to depressive. The ecological and phytocenotic optimua do not coincide for the majority of CP. The optimal growing conditions for A. officinalis occur in reed near-bank communities, along the periphery of Phragmites australis stand. Worsening of the vital state of A. officinalis CP is observed in the communities perturbed by depasturage.
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