Coenopopulation Structures of Various Plant Species in Yakutia

Institute for Biological Problems of Cryolithozone SB RAS, 677980 Yakutsk, Russia

^* Corresponding author: vvsemenova-8@yandex.ru

Abstract

This research work details analysis of the coenopopulation structure of 13 plants of various species in Yakutia and compares them with the characteristic spectra types of their species. The structure of plant coenopopulations was investigated from 2003 to 2019 in Central Yakutia. The left-sided and centered ontogenetic spectra are found in perennial plants with simple ontogenesis and shallow rejuvenation which were studied. The left-sided spectrum is the basic structure of these coenopopulations. The centered ontogenetic spectrum is largely found in unfavorable growing conditions under the impact of grazing and trampling by cattle and horses. This rule applies to the CP structure of Veronica incana which is an evergreen chamaephyte and for which the seasonal anthropogenic load contributes to the mechanical vegetative reproduction of its species, resulting in stable left-sided CP spectra. The ontogenetic spectra of the studied plants coincide with the characteristic spectra of the species and are considered stable.