Home – Home – Jornals – Contemporary Problems of Ecology 2003 number 4

The algae composition of Euglenophyta division of the steppe river Karasuk has been studied. 94 species, 27 varieties and forms from 16 genera, 5 families, 2 orders and 1 class have been found.  Zonal peculiarities of the taxonomic structure of the division, have been noted, the distribution pattern of euglenophytes across ecotopes is shown, their role in the phytoplankton numbers and biomass has been estimated, and attachment of species of this division to sites of the river with an increased biotic contamination has been established.

Data on rare or new (for West Siberia) algae (38 species and 5 varieties) found in 1995

The paper represents the first report on the algal flora of the lake Uvs-Nuur (Tuva Republic, Russia) in which 202 specific and intraspecific taxa belonging to five divisions have been found. Diatoms and blue-green algae dominate in the lake. The results of systematic and ecological analysis of the lake algae are presented.

A taxonomic analysis of plankton communities of algae in the water bodies of the Molodo river (left-hand tributary of the Lena river) has been carried out. Characteristics of quantitative development of plankton algae of various water bodies of the river basin and the composition of structure-forming complexes are given. It has been established that the influence of precious metal extraction activities of the complex on the phytoplankton in the site of studies is limited by the settler water body.

A new mode of reproduction of Asterionella formosa is discovered in living natural material. The new data on the reproduction of plankton diatom improve our understanding of the biology and ecology of the species. Original micrographs of consecutive stages of development of sister cells were obtained using light microscope

Comprehensive mycological-geobotanic studies of the basic vegetation types of South Siberia have been started. The species composition of the fungal communities of mesophile herbaceous birch-pine forests has been studied where on eight 20  20 m pilot sites censuses of mushrooms were carried out from May to September. 325 macromycetes species have been found, their abundance and ecological attachment have been estimated. Analysis of their distribution across key sites has been carried out

Macrobiota of the aspen-fir forests of the Salair consists of 237 species from 64 genera, 16 families and 5 orders. The found fungi species have to be considered as belonging to 8 trophical groups: mycorrhiza-formers (32%), humus saprotrophs (8%), litter saprotrophs (23%), xylotrophs (32%), coprotrophs (2%) and carbo-and briotrophs (3%).

The species composition of micromycetes on arboreal plants of Rosaceae family has been studied. Dominant species and genera of pathogens have been determined. A description of microscopic fungi is presented.

Powdery mildews (Erysiphales) in green plantations of Novosibirsk city have been studied. Differences in the development of powdery mildews on arboreal plants introduced in the arboretum of the Central Siberian Botanical Garden situated within the green zone of Novosibirsk and in plantations growing in industrial districts of the city are compared. A description of micromycetes is presented.

The species composition of lichens covering the petroglyphs, stone placers of mounds and other monuments of ancient arts has been studied. 193 lichen species from 57 genera, 25 families and 6 orders have been defined. The species Arthonia lapidicola (Tayl.) Branth et Rostr., Opegrapha gyrocarpa Flot., Verrucaria subumbrinula Vain. Turned out to be new for Siberia, Arthopyrenia inconspiqu a Lahm. ap. Koerb was new for Russia and Asia, Verrucaria cataleptoides Nyl. New for Asia and Siberia

The lichen flora of the Novosibirsk Science Center for which limited data on lichens had been available, was studied. Defined were 165 species from 61 genera and 28 families. An influence of atmospheric pollution on lichens of some habitats has been found.

Peculiarities of distribution of epilith lichens in various ecotopes of the East Sayan region (within the Irkutsk oblast) are considered. Complexes of species found in the Irkutsk-Cheremkhovo plain (on rocky riverbanks) and in the piedmonts and spurs of ranges of the East Sayan (in closed mountain river valleys, in forests under the forest canopy and on open stony placers in upper parts of hillsides) are characterized. Totally, 172 species and subspecies of epilith lichens belonging to 75 genera and 39 families were found: among them, there were crustose, 50 foliose, 4 fruticose lichens. 13 species were

Attachment of lichen species to various substrates was studied and analyzed. Studied were 35 arboreal species, soil, litter and buildings.

Lichen flora of southern subtaiga (Tara district of the Omsk Region) was studied. Used as materials were collections made by the author and by the students of the Pedasgogical University during the summer season of 1973

Some results of research of lichen flora in National Nature Park (NNP)

Lichens of hydromorphous landscapes of the southern taiga subzone of the Tomsk Region have been studied. 276 species from 69 genera, 32 families and 10 orders have been defined. The species Usnea silvatica Mot. Is new for Siberia.

Despite the plain character of the territory, regions of south-east of the Tomsk Region are characterized by a great diversity of vegetation communities whose inseparable component are lichens. Studies of lichen flora of some forest and swamp phytocenoses have made it possible to elucidate the distribution pattern of lichens in these plant communities.

Surface lichen synusiae of the eastern part of the East Sayan (middle reaches of Hoito-Gol river) were studied. The system of surface lichen synusiae of the Yamal subarctic including 2 formions, 4 federations, 13 unions and 83 societetes is presented. Lchenological characteristics of the main types of plant communities are given.