Home – Home – Jornals – Contemporary Problems of Ecology 2008 number 3

On the basis of the an

When using a collection of published data concerning forest-forming species of the Ural and adjacent regions in a number of 1230 plots of forest biomass (stems, branches, foliage, roots and understory) and 245 plots of annual primary production, the regression equations are designed. The first-group equations describe the dependence of forest biomass upon mass-forming factors

The southern coastal Baikal Lake area is characterized by the dampest climate in the Baikal region, the basic amount of rain preci

The data on the variability of the plant community formation of the n

A detailed systematic list of subaquatic epilithic and aquatic lichens inhabiting the surf zone and the littoral region of the test site Cape Berezovyi (Southern Baikal) is provided on the basis of investigations carried out within the years 2002

An investigation of plant cover conditions in the north of Middle Siberia was carried out. The study was based on lichenological data. The article describes approaches and methods of lichenoindication of plant cover condition using the an

The results of river water monitoring at the licensed oil field areas in the Middle Ob area are presented. The complex estimation of the river water ecological conditions is made using microbiological indication and biotesting. The number of heterotrophic saprophytic bacteria in the majority of rivers correspond to the satisfactory water quality. The faecal pollution indicators were detected in most rivers. The self-purification potential of the major part of streams was low. The Gram-positive coccus bacterial forms were dominant in microbial cenosis in the majority of rivers. Seven toxic samples were detected using the biotesting.

Investigation of the faun

Under the conditions of the southern taiga in West Siberia, the highest level of seasonal catalase and anaerobic dehydrogenase activity of the forest reclaimed peat soil was revealed within the moisture content range 20

Two computer-aided algorithms of forest water protection zone allocation using the digital elevation model (DEM) and spatial an

The efficiency of photoluminescent (light-correcting) polymeric films on the enzymatic activity of microorganisms in oil-polluted soil was investigated under laboratory conditions. The effect of the use of films as a covering material containing organic and inorganic photoluminophores was studied under the UV-irradiation of the soil polluted with oil products in the concentration up to 50 g/kg. The application of light-correcting films increases the activtiy of enzymes in oil-polluted soil: catalase by a factor of 2

Accumulation of heavy metals in the system soil-plant caused by the application of increasing doses of sewage sediments under the conditions of Transbaikalia was considered. On the basis of the index of total pollution, an optimal dose of waste water sediments to be introduced was revealed. The use of sewage sediments that are accumulated in cities also solves the ecologically essential problem of sediment utilization.

The influence of heavy metal mobile forms on the number of ecological-trophical groups of microorganisms in the soil substratum of the placer gold mines in Priamurje is discussed. The investigated soil samples are characterized by stable enrichment with such elements as Co, Ni, Cr, Cu, Pb, Zn, As, Mo. The amount of mobile forms (with respect to total content) varies from 0.5 to 54 % depending on element. A dependence between the indices of pollution and the ranges of the number of main ecological-trophical groups of microorganism is revealed. Dependencies between increased concentrations of the mobile forms of some heavy metals and the microbiological indices are established and illustrated.

The pollution of the Amur river water with organic compounds at the Khabarovsk drinking water supply point is studied by means of gas chromatography

Diversity and the anatomic structure of the ectomycorrhizas of Siberian spruce in natural communities over the altitudinal gradient from 305 to 800 m above the sea level (northern taiga, the Denezhkin Kamen

A description of the system of ecological monitoring in the State Natural Reserve Stolby (Krasnoyarsk District) is presented. The degree of pollution of the ecosystems of the reserve with fluorine emitted by a high-capacity aluminium plant is determined.