Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal. 2020. № 1(33). P. 28—37
03.00.00 BIOLOGICAL SCIENCES
UDC 581.4+581.9+502.753(470.13)
Teteryuk Liudmila Vladimirovna, Candidate of Biological Sciences, Associated Professor
Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences Bobrov Yuriy Aleksandrovich, Candidate of Biological Sciences, Associated Professor
Pitirim Sorokin Syktyvkar State University
BIOMORPHOLOGY AND STRUCTURE OF POPULATIONS OF Aconogonon riparium (Polygonaceae) IN THE EUROPEAN NORTH-EAST OF RUSSIA
Abstract
The work considers biomorphology and population features of Aconogonon riparium (Polygonaceae). This species is protected within the Komi Republic as rare plants. The study was conducted in a peripheral isolated population of the species using standard biomorphological and population methods. The growth form of Aconogonon riparium was described for the first time; it was shown that in a mature generative ontogenetic state Aconogonon riparium is a perennial, rooted, polycarpous herbaceous plant with assimilating shoots of a non-succulent type. The local population of the species on Bolshoi Podchersky Island totals up to 150 adult individuals, it is stable and “mature” by the type of spectrum. In its composition, several coenotic populations are distinguished (by the type of spectrum, from “young” to “aging”), corresponding to the island’s landforms. Self-maintenance of the population is difficult due to the low germination of emerging seeds and the effect of floods. Sustainable growth of Aconogonon riparium under long spring floods and short vegetation periods on a sandy river island is facilitated by its biomorphological features: significant life span, powerful anchor root, rapid development of biomass, the formation of only vegetative-generative shoots, and the ability to abundantly produce additional roots. The most important limiting factors of species distribution in the European northeast of Russia are climatic conditions (including a short growing season), irregularity of seeding and poor seed germination.
Key words
European northeast of Russia, Aconogonon riparium, biomorphology, populations, species resistance mechanisms.
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Bibliography link to this article:
Teteryuk L. V., Bobrov Yu. A. Biomorphology and structure of populations of Aconogonon riparium (Polygonaceae) in the European North-East of Russia. Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2020, no. 1 (33), pp. 28—37. DOI: https://doi.org/10.32516/2303-9922.2020.33.3.