We kindly inform you that, as long as the subject affiliation of our 300.000+ articles is in progress, you might get unsufficient or no results on your third level or second level search. In this case, please broaden your search criteria.
The paper is devoted to the different methods of the field research of the birds’ colonies. By the example of common heron the assessment methods of spatial structure of the population and its influence on a biogeocoenosis are described. Most acceptable and available techniques are proposed.
More...
Data on the influence of the illuminance conditions of different expositions of flat zone of the floodplain lake Knyaginya(valley of the Samara river) on the composition of aquatic higher vegetation and macrozoobenthos of the macrophyte biogeocoenoses are presented.
More...
Influence of a humus of different origin to a catalase activity in leaves, roots and corns of the pure lines (В-73, ГК-26, П-346 and F-2) and hybrid (Pioneer 3879) of Zea maize was studied. The humus was originated from the preparations Floreks bio, Floreks N and Floreks PK. The research was carried out in the phytotron, in the field and model experiment.
More...
Extent of toxic influence of cadmium and nickel joint action on growth and development of the maize germinant and plants’ adaptation capabilities to negative influence of heavy metals was studied. Specific protective activity of the phytohormones Emistim C and Zeastimulin under conditions of the cadmium and nickel joint action was shown.
More...
Among studied the Hydrangea L. genus the species, which most adapted to the environment of steppe conditions, were developed. H. cinerea Stall. and H. bretschneider Dipp. are recommended for use in laying out of parks, etc.
More...
Biodiversity of soil invertebrates on the model plots of Bel’gard International Prysamars’ky Biosphere Station of the Dnipropetrovsk National University is under consideration. Number, biomass and distribution of the invertebrates on the right-bank of Samara River were ascertained in 2003–2005.
More...
The article touches upon the burning questions of environmental contamination with high-polymeric compounds. The possibility of these compounds transformation into energy carriers with the help of anaerobic methanegenic associations has been estimated. The mechanisms of interaction between certain populations of methanegenic association microorganisms have been studied. The selection of the microorganisms, which took part in the transformation of polymers into energy carriers, has been carried out. Some artificial microbial populations have been created. The influence of outer factors on the processes of intensification and increase of obtained amounts of energy carriers in the course of high-polymeric compounds transformation by anaerobic microorganisms has been studied.
More...
Research of biochemical parameters of two aquatic amphibian species was conducted in biotopes of the channel Dnieper-Donbass. Finding data showed a high level of protein and lipids in animal organs and tissues. That testifies to the large energy resources of the organisms and allows estimating both separate individuals and populations as stable ones – which are able to the further growth.
More...
Benzene content in organs and tissues of tailless amphibians from the habitats different on the degree of contamination (sewage area Dniprovsko-Orelsky nature reserve of chemical enterprises and control biotopes of the Dniprovsko-Orelsky nature reserve) was studied. The coefficients of benzene bioaccumulation in organs and tissues were calculated. An estimation of organs as the benzene micro - and macro concentrators is given. Comparative analysis of the benzene accumulation in aquatic and terrestrial amphibians has been prepared.
More...
54 staphylococcus strains with different resistance levels to a number of antibiotics have been extracted from the reproductive canal of women who had a miscarriage. The respiration activity of the selectved cultures has been studied. Endogenic respiration processes in staphylococcus cells intensified in consequence of the development of antimicrobial medication resistance.
More...
Influence of fossorial activity of European mole Talpa еuropаеа on number and distribution of soil microorganisms under conditions of cadmium pollution of the soil is characterized. Mammals’ fossorial activity is an important natural ecological factor that contributes to microflora rehabilitation and development under conditions of contamination.
More...
Results of the research are evidence of changing muscles reflex activity of human lower extremity under the influence of sound stimulus of various frequency range together with the vestibular burden. The most change of the H-reflex was observed under the sound stimulus of 800 hertz. Not only the proprioceptive but auditory sensory system takes part in the regulation of the brain reflex activity. Existence of different labyrinths actions, according to the situation, on the interneuronic inhibitory ways of the postsynaptic inhibition of the salens muscle’s motoneurons is supposed.
More...
The main results of research of the aquatic carnivorous beetles of the rivers of Savranka, Dnister, Great Kujalnick and Tiligul within the borders of Odessa region are discussed. Qualitative composition and biotopic distribution of the beetles, contribution of different ecological communities to the fauna of the reservoirs were studied.
More...
In modelling experiment joint action of heavy metal ions (lead, cadmium) and cloroacetanilide herbicide frontjere on glutationreductase activity in maize seedlings at initial stages of ontogenesis was investigated. The increasing of enzyme activity in a sprouting grain at herbicide and ions of lead and cadmium presence and variation of enzyme activity in seedlings were established at joint action of toxicants.
More...
The influencing of elk and roe deer excrements on radio nuckleids migration in the soil horizon under zinc pollution circumstances has been investigated. It is confirmed that mammals excretory activity is an important acting natural ecological factor further radio nuckleids quickly redistribution in the soil thus reducing the level of radioactivity and heavy metals
More...
The creative legitimacies of the dynamics albumen maintenance and peculiarity of them accumulation in sprouts and leafs six lilac species under dependence of the phenophase seasonal development and influence of hydrotemperature factors were investigated, he regression methods of analysis were was used in this investigation
More...
Influence of heavy metals on growth, biosynthesis, lytic action and growth stimulating activity enzymes complex of Streptomyces recifensis var. lyticus was studied. It was showed that salt of plumbum' has positive influence as on biosynthesis hydrolases (lytic endopeptidases, proteinases, amylases) as well increase growth stimulating activity of preparation relatively the yeast
More...
The modern condition of the environment protection in territory of the Dnipropetrovsk region has been analyzed. Series of practical actions for optimization of condition natural and anthropogeneous transformed ecosystems on 2005-2015 are offered
More...
The microelement composition of larvae of elateridae was described in biotopes which different on the degree of contamination of the Pridneprovsky region. A degree of contamination of environment by the heavy metals and their relative accumulation in the invertebrate animals was determined.
More...
We investigated influence of electromagnetic super high frequency (SHF) waves (10 Hz) on mechanical parameters of motility of bunch tubifex (1300 - 1500 units) at a different load and sequence of its mechanical stimulation. Is shown, that after a пот-thermal wave irradiation (1 MVt/sm2) latency and forward front of mechanograms is increased on 5 - 10 %, amplitude and duration of the answers simultaneously decreases. The maximal mass, which can lift single unit tubifex is decreased. The capacity of single unit is reduced on the average about 80 %. The authors make conclusion about temporary negative influence SHF-waves on simple biological systems.
More...
