ISSN 10674136, Russian Journal of Ecology, 2012, Vol. 43, No. 1, pp. 19–23. © Pleiades Publishing, Ltd., 2012.
Original Russian Text © N.I. Andreyashkina, 2012, published in Ekologiya, 2012, No. 1, pp. 22–26.
The species composition and structure of vegeta
tion in anthropogenically disturbed habitats are
known to depend on the type and degree of distur
bance, moisture supply, topographic position, regen
eration period, features of underlying substrates,
resources of the local flora, migration of viable plant
diaspores from surrounding areas, and a number of
other factors. It is considered that an active part in veg
etation regeneration is played by species growing on
slightly sodded substrates confined exclusively to
anthropogenic ecotopes or remaining from previous
communities. It has also been found that tundra vege
tation regenerates much more slowly than intrazonal
To reveal specific features of overgrowing in an area
disturbed about 20 years ago, field studies during the
growing season of 2006 were performed in the region
of the Bovanenkovo Oil–Gas Condensate Field with
the purpose of comparative analysis of natural vegeta
tion and vegetation regenerated in areas where the
soil–plant cover was completely destroyed.
MATERIAL AND METHODS
The study area lies in the northern part of the sub
arctic tundra subzone, in the typical tundra belt of the
Yamal Peninsula (Aleksandrova, 1977). The climate of
the area is cold and excessively humid (Shiyatov and
Mazepa, 1995). Vegetation is formed under perma
frost conditions in a low hilly plain (9–35 m a.s.l.) with
a welldeveloped network of rivers and lakes. The
moisture regime is a major environmental factors
determining the species composition, structure, and
succession of plant communities in space. General
characteristics of vegetation and brief descriptions of
the presentday structure of certain communities are
given in our previous publications (Andreyashkina,
2008; Andreyashkina and Peshkova, 1995).
In natural habitats, the following communities
(associations) were chosen for the study:
(1) Dwarf shrub–moss–lichen polygonal tundras.
(2) Herb–dwarfshrub associations with patches of
mosses and lichens, widely represented in parts of
watersheds disturbed by regular reindeer grazing but
initially covered by dwarf shrub–moss–lichen spotted
hillocky tundras (currently totally destroyed) and
polygonal tundras. These associations are formed by
species of the local flora.
(2a) Herb–dwarfshrub associations on solifluc
(3) Dwarf shrub–lichen–moss spotted hillocky
tundras with willows and dwarf birch.
4. Dwarf birch herb–dwarfshrub–moss spotted
hillocky tundras (anthropogenic variant of dwarf
(5) Herb–moss hillocky tundras with willows and
(6) Willow–dwarfbirch dwarf shrub–herb–moss
hillocky and tussocky–hillocky tundras.
7. Herb–moss willow stand.
8. Herb–moss bog.
The first four types of communities and willow
stand occur mainly on sandy and sandy loam soils;
Composition of Plant Communities in Natural and Technogenically
Disturbed Ecotopes on Watersheds of the Yamal Peninsula:
N. I. Andreyashkina
Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, ul. Vos’mogo Marta 202, Yekaterinburg,
620144 Russia; email: email@example.com
Received March 12, 2010
—Specific features in the overgrowing of technogenically disturbed areas with completely destroyed
soil and plant cover (a sand pit, a causeway, and an offroad vehicle trail) have been studied in the environs of
the Bovanenkovo Oil–Gas Condensate Field. It is shown that the vegetation of natural ecotopes and ecotopes
disturbed approximately 20 years ago is characterized by a relatively high similarity in the composition of vas
cular plants. The total species composition of plant communities (including mosses and lichens) and their
structure show a considerable loss of floristic and phytocenotic diversity.
: ecotopes, plant communities (associations), vascular plants, flora, floristic similarity.