Russian Journal of Ecology, 1997, V 28, N 4.

Dynamics of Reestablishment of Vegetation
in an Anthropogenically Disturbed Sphagnum Bog
in the Territory of an Oil Field in the Middle Ob Region
O. E. Maksimenko, N. A. Chervyakov, T. I. Karkishko, 
and N. V. Glotov 
p. 211  

The Effect of Urban Environment on Natural Forests: 
An Example of the Town of Divnogorsk
A. V. Avdeeva and V. V. Kuz'michev 
p. 216  

On the Ecosystems Approach to the Zoning of Tundra Forests
A. P. Abaimov and M. A. Sofronov 
p. 221  

Application of Geobotanical Indices of Ecological Scale to Mapping
of Disturbed Lands in the Khar'yaginsk Oil and Gas Field
T. V. Novakovskaya and N. P. Akul'shina 
p. 224  

On the Methods for Measuring Forest Litter Thickness
to Diagnose the Technogenic Disturbances of Ecosystems
E. L. Vorobeichik 
p. 230  

Behavior of Plutonium in the Soils of the Ural Region
F. I. Pavlotskaya 
p. 235  

Dynamics of Long-Lived Radionuclides in Mosses 
and Lichens
M. G. Nifontova 
p. 240  

Population Dynamics of the Beaver in Samarskaya Oblast
V. V. Brozdnyakov, A. A. Skobelev, and K. V. Shestun 
p. 245
 
Ecology of Soil Fauna in Mountain Ecosystems of Northern Vietnam
D. A. Krivolutskii, Huynh Thi Kim Hoi, and V. L. Usachev
p. 250
 
Factors Limiting Northward Expansion of Phyllophagous Insects:
The Example of Pieris napi L. and Pieris brassicae L.
I. A. Bogacheva 
p. 256  

Mercury Accumulation in Fish from Water Bodies of the Vologodskaya Oblast
I. K. Stepanova and V. T. Komov 
p. 260  

Reproductive Success of Willow Ptarmigan, Lagopus lagopus,
in the Northern Yamal
V. V. Tarasov 
p. 265  

Population Dynamics of Wild Boar, Sus scrofa,
in Sverdlovsk Oblast and Its Relation to Climatic Factors
N. I. Markov 
p. 269  


 Short Communications


Effects of Electric Field on Drosophila melanogaster
S. E. Dromashko, O. V. Kvitko, and G. A. Pisarchik 
p. 275
 
Effect of Parasites on Resistance to Oxygen Starvation in the Ruff
(Gymnocephalus cernuus)
N. M. Pronin, D. Selgebi, S. V. Pronina, and T. Darlen 
p. 278
 
Natural and Technogenic Radionuclides in the Bones of Reindeer in Taimyr
G. A. Klevezal', A. E. Bakhur, A. A. Sokolov, and N. L.
Krushinskaya 
p. 281