Abstract
The authors of the article have evaluated the state and structure of coenopopulations of nemoral species using the example of Convallaria majalis L. and Polygonatum odoratum (Mill.) Druce. Three cenopopulations of P. odoratum (CPP.1 – CPP.3) and four of C. majalis (CPC.4 - CPC.7) have been described while studying three quarters of the Medvedsky Bor nature sanctuary. The authors have come to the conclusion that all the studied coenopopulations of P. odoratum and C. majalis were normal juvenile incomplete. Due to the high demand of C. majalis and P. odoratum in soil moisture, their existence in the pine communities of the Medvedsky Bor nature sanctuary is ensured by the presence of green mosses that retain moisture on the substrate surface.
Highlights
Pine forests represent special communities: they do not form their own natural zone
The projective cover of the grass-dwarf shrub layer is 80%, it is composed of the following species: Vaccinium vitis-idaea L., Calamagrostis arundinacea (L.) Roth, C. majalis, P. odoratum, Melampyrum sylvaticum L., Luzula pilosa (L.) Willd., Orthilia secunda (L.) House, Pulsatilla patens (L.) Mill., Vaccinium myrtillus L., Dryopteris carthusiana (Vill.)
In the course of the study, the authors evaluated the coenopopulations of C. majalis and P. odoratum, confined to forest pine communities
Summary
Pine forests represent special communities: they do not form their own natural zone. They are formed on the territory of the northeastern European part of Russia by plants Pinus sylvestris L. from different migration waves. On the territory of the natural sanctuary "Medvedsky Bor" they are relict communities of the postglacial xerothermal epoch on the continental sand dunes. Representatives of the latter include May lily of the valley (Convallaria majalis L.) and fragrant bush (Polygonatum odoratum (Mill.) Druce), which are the objects of our study. The aim of this research is to assess the state and structure of coenopopulations (CP) of C. majalis and P. odoratum in pine types of communities
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