UDC

630

Authors

Sobolev Aleksandr Nikolaevich
Solovetsky State Historical and Architectural Museum-Reserve (Solovki, Arkhangelsk region, Russia)
e-mail: alex-sobol@mail.ru
Feklistov Pavel Aleksandrovich
Institute of Natural Sciences and Technology, Northern (Arctic) Federal University named after M.V. Lomonosov (Arkhangelsk, Russia)
e-mail: feklistov@narfu.ru

Abstract

60 species of plants were identified in the ground cover of pine forests of the Solovetsky Islands. The article analyzes the occurrence and relative abundance of these species according to the layers for the entire range of forest types: blueberry, moss and lichen, cowberry and sphagnum. The classes of dominance, common and having the most abundant species, are identified. It was found that the field and suffruticose layer consists of 21 families of plants. A family of Ericaceae is represented by nine species with great abundance. The species of this family as Vaccinium myrtillus and Vaccinium vitisidaea in the pine forests act as dominant with a share of abundance up to 36.6–41.9 %. Other families are composed of one or three species of plants. Empetrum nigrum is common. Moss and lichen layer is mainly formed by green and sphagnum mosses and lichens of Cladoniaceae family, represented by eight species. Mosses of Sphagnaceae family are represented by six species. The other families are represented by 3 or 1 species of plants. The study of similarity of species content demonstrated the most unique and homogeneous species composition of pine forests of sphagnum type. Only a third of its species is identical to the other types of forests. The cowberry pine forests have the least original and volatile composition. A half of their species is represented in the other forest types. The special subtypes can be distinguished within the forest types. They differ in species composition, structure, diversity and have higher values of similarity of species content. Degree of soil moistening within distinct forest types allows us to select groups of plants that differ in a number of criteria.

Keywords

the Solovetsky Islands, pine forests, species composition, ground cover, frequency, abundance, similarity of species content

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