Home – Home – Jornals – Flora and Vegetation of Asian Russia 2014 number 3

The data on the biodiversity of freshwater algae from Timpton River basin (southern Yakutia) are presented. In study water bodies 175 species of algae belonging to the six divisions are found. Algal communities composition were considered, short ecological and geographical analysis of the flora was made. The estimation of water quality by the Pantle-Buck’s method in the modification by Sladecek was made, according to this assessment all streams of the basin assigned to II class of water cleanliness.

The аssessment of the status of populations of fi ve P. fruticosa (L.) O. Schwarz by comparing the organismic and population parameters have been maked. The coenopopulations in the meadow steppe and subalpine meadow are in the optimal condition. Conditions of the small-turf steppe, pebbly flood plain and the alpine meadows are unfavorable for P. fruticosa , which causes a reduction or organismic, or population parameters.

Species composition of genus Pedicularis section Pharyngodon in Asiatic Russia was updated. Analysis of morphological features for the species of this section was made. Characteristics of life form, leaves, calyx, corolla, friut are diagnostic on section level. Features of root leaves and bracts, inflorescens are diagnostic on series level. Key for species determination is presented. Conspect of section Pharyngodon in Asiatic Russia is represented by 6 species belonging to 3 series. New series Pennelianae I.V. Han including arctic species with larger bracts and dense inflorescens is described. Latin diagnosys for series Aduncae previously described by A.I. Vvedensky in Russian is given. The location of type materials for 3 species was specified. Distribution of all species in Asiatic Russia is refi ned.

Morphology generative shoots of female and bisexual plants and the sexual structure of forest populations Origanum vulgare L. were investigated, morphological features of female and hermaphrodite flowers species were studied.

Morphogenesis of the individuals, structural-morphological polyvariation of the Nepeta podostachys Benth. shoot systems and the ontogenetic structure of coenopopulations in different ecological-phytocoenotic conditions of Tajikistan were studied. Structural-functional areas of the monocarpic shoots and their polyvariation were described. It was established that studied three coenopopulation were normal but old individuals or may be absent. Th eir ontogenetic spectra had centric and left-hand types. The resulting spectra reflect the pace of development of individuals and polyvariation of ontogeny.

Sexual structure of 21 coenopopulations in gynodioecious Schizonepeta multifi da was studied in the forest-steppe in Kuznetsk Highland. Three types of coenopopulations - unbiased sex ratio (40.9-58.0 % hermaphrodite individuals), female (from 59.4 up to 68.2 %) or hermaphrodite (from 58.5 up to 70.2 %) individuals dominate were singled out by a sexual spectrum.

The system and conspectus of the genus Puccinellia Parl. ( Poaceae ) species is presented. The conspectus includes 44 species from the 10 sections and 8 subsections. Information about nomenclature and typification, data on ecology and geographical distribution, comments and figures of new diagnostic features: form of ligula and structure of panicle, as well as the key for determination of all taxons are given. Section and 2 subsections are described, 3 new combinations in rank of section and subsection is offered in result of taxonomical revision. A new species for the flora of Russia and Eurasia P. andersonii is discovered, P. paupercula are reestablished, P. fi lifolia is striked off structure of fl ora. Asian species P. jacutica , P. neglecta are brought for the flora of North America for the first time. Areals of the most of species are have been clarifi ed.

Studied geographical regularities of changes of floristic composition of forest phytocenoses of the West-Siberian Plain along the latitudinal gradient from 55 to 68° N. Identified groups of species of higher vascular plants, which, on the basis of its occurrence is diagnosed latitudinal the boundaries of the zones and subzones of the spread of forest vegetation.

The results of the restoration (within 4 years) of the populations of Hedysarum theinum Krasnob. - endemic to the Altai, growing on the Mountain Red in the Altai Republic. Recommended as the best method for restoration and reintroduction of this species of use sowing of the untreated seeds in the soil at any time of the vegetative season. Th e effectiveness of restoration was less than 10 %.