Sviridenko B. F.

Utricularia vulgaris L. (Lentibulariaceae) ecobiomorphe in the West Siberian Plain

Abstract:

The results of an ecobiomorphological study of the hydrophilic Holarctic species Utricularia vulgaris L. (Lentibulariaceae), conducted in the steppe, forest-steppe, forest and forest-tundra natural climatic zones of the West Siberian Plain are discussed in this article. In the course of the work, a synthetic approach to the study of life forms was used, which presupposes taking into consideration biomorphological and ecological parameters of the species. The ecobiomorphological principle of studying life forms links into a single system such concepts as «life form», «ecobiomorphe», and «ecological niche». Important parameters of biology, morphology, and ecology of the species are taken into account/ considered: i.e. duration of life cycle, structure and functions of shoots, type of hi-bernacula and their conditions in an unfavorable season, and the ecological valence relative to the major factors of the environments (aquatic, soil). The list of ecobiomorphological characteristics suggests that U. vulgaris can be characterized as plurannual, polycarpic, free-floating (rootless), turion, long-shooted, photoautotrophic and inorganic leaf-feeding with optional non-chlorophyllic rudimentary stolons. It is a low, surface-blossoming, weakly saltish or fresh-water, indifferent to water active reaction and hardness, detritus-pelophilic, Fe-tolerant hydatophyte.

About the autors:

Boris Fedorovich Sviridenko, Doctor of Biological Sciences, Professor, Senior Researcher

Place of employment:

Surgut State University

Contacts:

е-mail: bosviri@mail.ru

Key words:

Utricularia vulgaris; Lentibulariaceae; West Siberian Plain; ecobiomorphe; ecological tolerance; рН; total salt content; total hardness of water; soluble Fe concentration