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Contemporary Problems of Ecology

2008 year, number 4

1.
Effect of Thermal Radiation of a Forest Fire on the Environment

E. N. Valendik, I. V. Kosov
Pages: 517–523

Abstract >>
Thermal radiation of forest fires of different kinds is investigated. The regions in which thermal radiation affects the forest stands and firemen are revealed.
																								



2.
Effect of the Cold Stress in the Rhizosphere on the Activity of Antioxidant Enzymes in the Tissues of Pinus sylvestris

I. L. Milyutina, N. E. Sudachkova, L. I. Romanova, G. P. Semenova
Pages: 525–530

Abstract >>
Comparative investigation of the activity of li
																								



3.
Seasonal Changes in the Nitrogen-Fixing Activity and Ultrastructure of Root Nodules of Alnus hirsuta (Betulaceae)

G. G. Maistrenko, N. Ya. Gordienko, T. I. Novikova, E. V. Banaev
Pages: 531–536

Abstract >>
The data on the important ecological feature of alder-tree
																								



4.
About Changes in Water Content of the One-Year Sprouts of Wood Plants in the Temperate Climatic Zone

B. I. Syomkin, M. V. Gorshkov, L. I. Varchenko
Pages: 537–544

Abstract >>
The method to account the rates of changes in relative humidity in one-years sprouts of coniferous wood plants is proposed. On the basis of the data of N. D. Nesterovich [1965], the account of the rates of humidity changes within one year is carried out for 8 coniferous wood plant species; the average relations of water content for a same month of each year is determined. The rates of changes in humidity within one year for one-years sprouts of coniferous wood plants are determined.
																								



5.
Morphology and Variability of the Pollen of Spiraea L. (Rosaceae) Genus in Siberia and the Far East

T. A. Polyakova, G. N. Gataulina
Pages: 545–551

Abstract >>
Pollen of 12 species of the Spiraea L. genus growing in differetn regions of Siberia and the Far East is investigated. The ultrasculpture of pollen grains is described. On the basis of aperture morphology and exine sculpture, the main types of pollen grains are sorted, and the key indices for their determination are revealed. It is noted that the species of the Spiraria section are distinguished by the large size of grains. Substantial variations of the size of pollen grains was established for S. media and S. alpina species. The level of natural polymorphism of palynological indices is shown.
																								



6.
Species

S. V. Osipov, V. Ya. Cherdantseva, I. A. Galanina, V. V. Jakubov
Pages: 53–569

Abstract >>
203 species of vascular plants, 50 species of mosses and 41 species of lichens are found on gold mining sites. The list of these species is reviewed. The distribution over technogenic relief elements is indicated for each species. The main elements of the technogenic relief, their flora and vegetation are characterized. The species composition and ecological-coenological spectra of drag and hydraulic gun dumps are the most similar ones. The species diversity of vascular plants on gold mining sites is high in different regions.
																								



7.
Phenetics of the Subgenera and Sections in the Genus Oxytropis DC. (Fabaceae) Related to the Ecology and Phylogeny

L. I. MALYSHEV
Pages: 571–576

Abstract >>
The paper examines the results of the cluster analysis for 25 sections in the genus Oxytropis DC. on the basis of 50 quantitative alternative characters in morphology. It has mainly confirmed the division into subgenera and sections accepted by different investigators. It reveals the affinity (not identity) between subgenera Tragacanthopsis Vass. and Triticaria Vass. (difference: 44 %), and justifies the recognition of the section Chrysantha Vass. in the subgenus Oxytropis, as well as the recognition of the sections Dolichanthos Gontsch and Mongolia F. C. Fu, the latter being related to the subgenus Ptiloxytropis Bunge. In addition, unreasonableness of disjunction of the section Mesogaea Bunge off the Janthin
																								



8.
Rare and Endangered Species of Higher Plants of Khamar-Daban, Eastern Sayan and Adjacent Territories

L. V. Bardunov, A. V. Verkhozina, N. V. Dudareva, S. G. Kazanovsky, A. A. Kiseleva
Pages: 577–581

Abstract >>
The paper presents the an
																								



9.
Diatoms in the Peatbog Polluted with Oil-Field Drines (the Kolva River Basin, Komi Republic)

A. S. Stenina
Pages: 583–588

Abstract >>
The first data about the diatoms of phytobenthos and epi
																								



10.
Spatial Structure as a Factor of Stability for the Seed Revegetation in Ecotones

G. G. zhilyaev
Pages: 589–594

Abstract >>
The mosaic of spatial locations of Soldanella hungarica Simonk. is investigated in the ecotones at the boundary between the subalpine and forest plant belts of the Carpathian mountains. It is shown that in extreme cases the nonuniform group arrangement and limited participation of the individuals of high vitality create more possibilities for seed reproduction and stable renewal of generations in local accumulations, but al the same time hinder the formation of the integrated uninterrupted population field of S. hungarica in Carpathian ecotones.
																								



11.
Ecogeochemical Consequences of Forest Fires in the Belt Pine Forests of the Altay Territory

B. L. Shcherbov, N. V. Zavgorodnyaya, E. V. Lazareva
Pages: 595–605

Abstract >>
The behaviour of artificial radionuclides and microelements during forest fire events in the pine forests of the Altay Territory is investigated. It is shown that forestland burns are accompanied by active air migration of 90Sr,137Cs, Hg, Cd, As and other elements, and additional pollution of the components of forest biogeocenosis, at least at the areas adjacent to fire sites. The activity of element migration depends mainly on the biogeochemical characteristics of the elements, on the state of forest combustible materials, and on weather conditions. During the post-fire periods, redistribution of the elements occurs as a result of their transportation with melted snow water and rainwater. Revegetation carried out in burns promotes additional changes in element distribution over the burnt areas.
																								



12.
Features of Mat Structure and Moss Productivity in Forest-Bog Complexes of West Siberia

I. A. Goncharova
Pages: 607–617

Abstract >>
The an
																								



13.
Chemical Composition of Drinking Water Sources in Pribaikalia as a Risk Factor of Increased Sickness Rate of Local Population

V. V. Kokovkin, F. V. Sukhorukov*, O. V. Shuvaeva, V. I. Belevantsev, V. I. Malkova, V. D. Strakhovenko*, B. L. Shcherbov*
Pages: 619–630

Abstract >>
Results obtained in 2003 and 2004 characterizing the quality of water from drinking water sources used by the population of the Ust-Ordyn Buryat autonomous district (BAD), Irkutsk District and Aginskoye BAD are presented. In the XX century, these regions had been affected by the technogenic and radiation pollution (as a result of nuclear weapon tests).
																								



14.
Weed Plant (Lactucetum tataricae, Lathyro-Lactucetum tataricae, Cannabio-Sinapetum) Associations in Leached Chernozems of the Areas Near the Ob River

V. E. Sineshchekov, A. G. Krasnoperov, E. M. Krasnoperova
Pages: 631–637

Abstract >>
As a result of 17-year investigations, eight associations of weed vegetation were singled out in cereal-fallow rotation and unchangeable wheat in leached chernozems of the areas near the Ob river. Five of these associations were an
																								



15.
Elemental Composition and Content of Flavonols of Pentaphylloides fruticosa (L) O. Schwarz in

E. P. Khramova, E. K. Komarevtzeva, K. P. Koutzenogij, G. A. Kovalskaya, O. V. Chankina
Pages: 639–644

Abstract >>
The elemental composition and the content of flavonols of Pentaphylloides fruticosa (L) O. Schwarz of the Mountainous Altai are investigated. Some distinctions in the content of elements and flavonols in P. fruticosa plants of different age conditions corresponding to two development periods, pregenerative (immature and virginal plants) and generative (young, middle-aged and oil generative plants), are discovered.
																								



16.
Monitoring of Wood-Rotting Fungi Community of the Natural Park

I. V. Stavishenko
Pages: 645–654

Abstract >>
The coenotic characteristics of the complexes of xylotrophic fungi were determined in the mycological investigation in the forest ecosystems of the natural part
																								



17.
Assessment of Ground Vegetation in the Zones under Technogenic Impact in the Suburbs of Norilsk City

S. G. Varaksin, G. V. Kuznetsova
Pages: 655–659

																								



18.
Quantitative Participation in the Structure of Green Plantations and the Resistance of Shrubbery in the Urbanized Ecosystems of Vladivostok

N. S. Shikhova
Pages: 661–671

Abstract >>
Generalized results of long-term investigations of frutictesoflora of the green plantations in Vladivostok are presented. Diversity of the species composition in connection with plantation types and the quantitative participation of species in urban planting are studied. The diagnostics of the vital state is carried out; the stability of shrub plants under the conditions of urban ecosystems is assessed.