Some Features of the Biology and Ecology of the Invasive Species Hordeum jubatum L. (Poaceae, Liliopsida) in the Southern Urals L. M. AbramovaA. N. MustafinaA. V. Kryukova OriginalPaper 15 January 2021 Pages: 1245 - 1253
Comparative Analysis of Biodamage to Various Types of Polyethylene by Galleria mellonella (Insecta, Lepidoptera, Pyralidae) Larvae A. V. VasilevaIa. V. MedvedevaM. N. Mukminov OriginalPaper 15 January 2021 Pages: 1254 - 1259
Breeding Conditions for Birds in the Nowaday Farmlands of European Russia: The Impact of Agriculture Intensification and Polarization, Part I: Habitats T. V. SviridovaL. V. MalovichkoP. D. Vengerov OriginalPaper 15 January 2021 Pages: 1260 - 1267
Assessment of the Possibility to Use Potentilla fruticosa L. (Rosaceae, Magnoliopsida) for Bioindication of the Environmental Status of the Eastern Ural Radioactive Trace E. P. KhramovaA. Yu. LugovskayaO. V. Tarasov OriginalPaper 15 January 2021 Pages: 1268 - 1276
Variability of the Gender Spectrum in Origanum vulgare L. (Lamiaceae, Magnoliopsida) N. I. GordeevaE. K. Komarevtseva SHORT COMMUNICATIONS 15 January 2021 Pages: 1277 - 1280
Appearance of the Siberian Flying Squirrel, Pteromys volans L., 1785 (Sciuridae, Mammalia), in the Lake Glubokoe Nature Reserve, Moscow Region A. N. ReshetnikovI. G. Meschersky SHORT COMMUNICATIONS 15 January 2021 Pages: 1281 - 1284
Body Shape Variability of the Minnow Phoxinus phoxinus (Linnaeus, 1758) (Cyprinidae, Actinopterygii) in Large and Small Watercourses of the Sylva River Basin (Middle Urals) V. Yu. Baranov OriginalPaper 15 January 2021 Pages: 1285 - 1292
Main Trends in Vertebrate Population Dynamics in the Clay Semi-desert of the Trans-Volga Region since the Mid-18th Century O. A. BukharevaA. V. Bykov OriginalPaper 15 January 2021 Pages: 1293 - 1300
Ecological Structure of the Public Transportation Microbiocoenosis D. B. GelashviliI. V. SolovyovaN. A. Filashikhin OriginalPaper 15 January 2021 Pages: 1301 - 1308
Results of Long-Term Observations on Stationary Transects in the Volga–Akhtuba Floodplain V. B. GolubA. V. ChuvashovM. V. Maltsev OriginalPaper 15 January 2021 Pages: 1309 - 1317
Assessment of the Ecological Status of Springs in Western Kazakhstan on the Basis of Their Hydrochemical and Microbiological Parameters G. Z. IdrissovaI. V. SergeevaE. N. Shevchenko OriginalPaper 15 January 2021 Pages: 1318 - 1326
Influence of Changes in Agricultural Landscapes on the Distribution and Number of the Demoiselle Crane (Аnthropoides virgo Linnaeus, 1758) (Gruidae, AVES) in its Breeding Range Since the Middle of the XX Century E. I. Ilyashenko OriginalPaper 15 January 2021 Pages: 1327 - 1333
Fragmentation of Habitats in Two Dormouse Species (Gliridae, Rodentia) and Protection of Biodiversity of Broad-leaved Forests in Nizhny Novgorod Oblast D. M. KrivonogovA. V. Shchegol’kovV. N. Orlov OriginalPaper 15 January 2021 Pages: 1334 - 1341
Climatic Factors of a Sudden Change in Tree Growth M. K. Sapanov OriginalPaper 15 January 2021 Pages: 1342 - 1346
A Record of the Tropical Species Thermocyclops taihokuensis Harada, 1931 (Copepoda: Cyclopoida) in European Russia V. S. ZhikharevD. E. GavrilkoG. V. Shurganova SHORT COMMUNICATIONS 15 January 2021 Pages: 1347 - 1350
Fertility and Viability of Pollen Grains of Taraxacum officinale Wigg. s.l. (Asteraceae, Magnoliopsida) in a Gradient of an Anthropogenically Transformed Environment T. V. ZhuikovaV. S. Bezel’A. V. Krivosheeva OriginalPaper 15 January 2021 Pages: 1351 - 1358
Dynamics of the Demographic Structure of Coenopopulations of Tulipa suaveolens Roth (Liliaceae, Magnoliophyta) in the Lower Volga Region A. S. KashinN. A. PetrovaA. S. Parkhomenko OriginalPaper 15 January 2021 Pages: 1359 - 1371
Fluctuating Asymmetry of the Traits of the Seismosensory System of the Roach Rutilus rutilus (L.) (Cyprinidae, Pisces) and the European Perch Perca fluviatilis L. (Percidae, Pisces) in Small Ponds with Various Water Mineralization B. G. Kotegov OriginalPaper 15 January 2021 Pages: 1372 - 1377
Nest Site Selection and Nest Construction in the Willow Warbler (Phylloscopus trochilus L., 1758) (Sylviidae, Aves) in the Taiga Zone of Northwestern Russia N. V. LapshinM. V. MatantsevaS. A. Simonov OriginalPaper 15 January 2021 Pages: 1378 - 1384
The Density of Larks (Alaudidae, Aves) in the Semi-Desert of the Trans-Volga Region in Connection with Landscape Wetting Dynamics M. L. OparinA. B. MamaevO. S. Oparina OriginalPaper 15 January 2021 Pages: 1385 - 1391
Status of the Photosynthetic Apparatus of Woody Plants Damaged by Gall Mites S. V. PestovS. Yu. Ogorodnikova OriginalPaper 15 January 2021 Pages: 1392 - 1397
Influence of Modern Climate Warming on the Terms of Basic Phenological Phases in the Population of Spermophilus pygmaeus Pallas, 1778 (Rodentia, Mammalia) on the Territory of the Yergenin Uplands N. V. PopovS. A. YakovlevT. B. Karavaeva OriginalPaper 15 January 2021 Pages: 1398 - 1403
Some Approaches to the Assessment of the Ecological State of Reservoirs of Different Types Based on the Relationship among the Main Hydrochemical Parameters E. A. ShashulovskayaS. A. Mosiyash OriginalPaper 15 January 2021 Pages: 1404 - 1410
Multidimensional Statistical Analysis of the Structure of Planktonic and Bottom Communities Inhabiting Mineralized Rivers of the Elton Lake Basin T. D. ZinchenkoV. K. ShitikovE. V. Abrosimova OriginalPaper 15 January 2021 Pages: 1411 - 1417
A Mathematical Model of a Winter Route Census: Checking for Falsification I. A. Kondratenkov OriginalPaper 15 January 2021 Pages: 1418 - 1424
Breeding Conditions for Birds in the Nowaday Farmlands of European Russia: The Impact of Agriculture Intensification and Polarization, Part II: Birds T. V. SviridovaL. V. MalovichkoP. D. Vengerov OriginalPaper 15 January 2021 Pages: 1425 - 1436
A Population-Based Approach to Determining the Borders and Number of Natural Plague Foci A. A. SludskyA. V. BoikoM. A. Tarasov OriginalPaper 15 January 2021 Pages: 1437 - 1441
Current Status of Populations of Delphinium L. (Ranunculaceae, Magnoliópsida) Species in the Lower-Volga Region and Adjacent Territories A. V. BogoslovI. V. ShilovaA. S. Kashin OriginalPaper 15 January 2021 Pages: 1442 - 1451
Habitat Structure and Abundance Dynamics of Marmota bobak Müller, 1776 (Sciuridae, Mammalia) in the Saratov Region at the End of the 20th–Start of the 21st Centuries I. A. KondratenkovM. L. OparinO. S. Oparina OriginalPaper 15 January 2021 Pages: 1452 - 1461
Ecological Aspects of the Outbreak of Hemorrhagic Fever with Renal Syndrome in the Territory of the Saratov Region V. N. ChekashovK. S. ZakharovN. V. Popov OriginalPaper 15 January 2021 Pages: 1462 - 1467
Abnormally Early Nesting of Acanthis cannabina (Linnaeus, 1758) (Fringillidae, Aves) in the Latryk River Valley (Saratov Region) V. G. TabachishinM. V. Yermokhin SHORT COMMUNICATIONS 15 January 2021 Pages: 1468 - 1470