Features of birch forests of the south of Tyumen region

2020 ◽  
Vol 19 (1) ◽  
pp. 198-202
Author(s):  
B. S. Kharitоntsev ◽  
V. R. Allayarova
Keyword(s):  
Betula Pendula ◽  
Western Siberia ◽  
European Russia ◽  
Forest Steppe ◽  
The South ◽  
Birch Forests ◽  
Western Siberian Plain

Birch forests with the dominant Betula pendula form on the territory of the Western-Siberian Plain asubtaiga zone, which is an analogue of the zone of broadleaf forests of European Russia. In addition, birch is an importantcomponent of the ring forest steppe of Western Siberia. As a zonal type of vegetation, birch forests include special species.Their occurrences are shown on the example of birch forests of Aromashevsky district in Tyumen region. The mechanismof their phytocenogenesis is proposed.

Zoya Il'inichna Glezer – life and scientific achievements

2019 ◽  
pp. 318-323
Author(s):  
Zinaida V. Pushina ◽  
Galina V. Stepanova ◽  
Ekaterina L. Grundan
Keyword(s):  
Western Siberia ◽  
Kara Sea ◽  
European Russia ◽  
Great Contribution ◽  
The South ◽  
The Creation ◽  
The 1960S ◽  
Scientific Achievements ◽  
South Of European Russia

Zoya Ilyinichna Glezer is the largest Russian micropaleontologist, a specialist in siliceous microfossils — Cenozoic diatoms and silicoflagellates. Since the 1960s, she systematically studied Paleogene siliceous microfossils from various regions of the country and therefore was an indispensable participant in the development of unified stratigraphic schemes for Paleogene siliceous plankton of various regions of the USSR. She made a great contribution to the creation of the newest Paleogene schemes in the south of European Russia and Western Siberia, to the correlations of the Paleogene deposits of the Kara Sea.

SPATIOTEMPORAL DYNAMICS OF AQUATIC AND ASSOCIATED GEOSYSTEMS IN THE SOUTH OF WESTERN SIBERIA UNDER CLIMATE CHANGE

2020 ◽  
Author(s):  
Dmitriy Chernykh ◽  
Dmitriy Zolotov ◽  
Roman Biryukov ◽  
Dmitriy Pershin
Keyword(s):  
Climate Change ◽  
Western Siberia ◽  
Soil Cover ◽  
Spatiotemporal Dynamics ◽  
Significant Part ◽  
Forest Steppe ◽  
Lake Levels ◽  
The South ◽  
Plant Associations

An unstable lake levels are characteristic for the Ob Plateau territory. Moreover, there are reciprocal level fluctuations. In this regard, both in the steppe and forest-steppe zones of the Plateau, a significant part of geosystems of underlying locations are periodically affected by the hydromorphic factor. It is manifested in the structure of soil cover, micro- and nanorelief, and composition of plant associations.

VEGETATION AND PLANT MATTER OF RAISED BOGS IN FOREST-STEPPE ZONE IN THE SOUTH OF WESTERN SIBERIA

2017 ◽  
pp. 73-77
Author(s):  
N.P. Mironycheva-Tokareva ◽  
◽  
N.P. Kosykh ◽  
E.K. Vishnyakova ◽  
N.G. Koronatova ◽  
...  
Keyword(s):  
Western Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
The South ◽  
Raised Bogs ◽  
Plant Matter

scholarly journals Daily Activity Dynamics of Different Species (Diptera, Culicidae) of Blood-Sucking Mosquitoes in the South of the Tyumen Region

2020 ◽  
Vol 14 (1) ◽  
pp. 17-28
Author(s):  
Tatiana A. Khlyzova
Keyword(s):  
Daily Activity ◽  
Mosquito Species ◽  
Steppe Zone ◽  
Southern Taiga ◽  
Forest Steppe ◽  
Air Humidity ◽  
The South ◽  
Blood Sucking ◽  
Relative Air Humidity ◽  
Birch Forests

The purpose of the research is studying features of daily activity of different blood-sucking mosquito species from the southern taiga subareas, and aspen and birch forests of the Tyumen Region woodland and forest-steppe zone. Materials and methods. The researches were conducted in 2005–2015 in the south of the Tyumen Region in three natural environment and climatic areas (subareas), namely, the southern taiga, the aspen and birch forests, and the forest-steppe zone. The surveys were carried out in each of three subareas twice in the summertime, namely, in June and July. The census of biting mosquitoes was held using an entomological net with detachable sacs. An interval between the censuses held was 2 hours. The temperature, relative air humidity, wind velocity and precipitation were recorded simultaneously. In determining a species composition of the blood-sucking mosquito imago, special identification tables were applied; specific names were given in accordance with the current list of valid specific names. Results and discussion. Blood-sucking mosquito number in the south of the Tyumen Region is high within 24 hours. The maximum number and a peak in species diversity were observed at 11 p.m. in all-natural environment and climatic areas of the Region. In studying a 24-hour rhythm, attacks by 29 mosquito species of the Culicidae family, which belong to five genera, namely, Anopheles, Culiseta, Coquillettidia, Aedes and Culex were detected. In terms of temperature, they can roughly be divided into two groups. The first group (10 species) includes species that attack actively at 10 to 20°С, and the second group (19 species) includes species that attack actively at 10 to 30°С. High flight activity of mosquitoes can be observed at 12.6–26°С, relative air humidity of 54–99% and light intensity of 0–8600 lux. Given night temperatures are relatively high, the main factor that limits mosquito night activity is fog occurrence with air humidity up to 100%. One of the limiting factors for mosquitoes is strong wind; when wind velocity was 5 m/sec, attacks by few individual mosquitoes were only detected. The female mosquito activity is influenced by their overall number – the higher the mosquito number is, the harder they find a feeder and receive required blood meal.

scholarly journals Macrophyte diversity in rivers and streams of the Vologda Region and several other regions of Russia

2021 ◽  
Vol 9 ◽  
Author(s):  
Dmitriy Philippov ◽  
Aleksandra Komarova
Keyword(s):  
Western Siberia ◽  
Northern Taiga ◽  
European Russia ◽  
Middle Taiga ◽  
Forest Steppe ◽  
The Caspian Sea ◽  
Global Biodiversity Information Facility ◽  
East European ◽  
Vologda Region ◽  
Rivers And Streams

The data paper contains the authors’ materials on the diversity of macrophytes, macroscopic plants regardless of their taxonomic position, in rivers and streams of East European Russia and Western Siberia. These data, collected on 247 rivers and 32 streams in 13 administrative regions of the Russian Federation, were provided as an occurrence dataset presented in the form of GBIF-mediated data. The main portion of the data was obtained in water objects of the Vologda Region (5201 occurrences). In addition, occurrences from the Arkhangelsk Region (347 occurrences), Khanty-Mansi Autonomous Okrug (159), Yaroslavl Region (132), Novgorod Region (97), Kostroma Region (41), Republic of Karelia (31), Sverdlovsk Region (29), Komi Republic (28), Orenburg Region (26), Chelyabinsk Region (22), Voronezh Region (22) and Tyumen Region (18) were given. The studies were carried out mainly in the southern and middle taiga and, to a lesser extent, in the northern taiga and the forest-steppe. The analysed watercourses belong to five drainage basins: the Azov Sea, the Baltic Sea, the White Sea, the Caspian Sea and the Kara Sea. The dataset contains materials on the diversity of Plantae (6094 occurrences) and Chromista (59 occurrences). This paper, in a standardised form, summarises mostly unpublished materials on the biodiversity of lotic ecosystems. The paper summarises the data obtained in long-term studies of phytodiversity in a range of rivers and streams of East European Russia and, fragmentarily, Western Siberia. A total of 6153 occurrences were included in the dataset. According to the GBIF taxonomic backbone, the dataset comprises 292 taxa, including 280 lower-rank taxa (species, subspecies, varieties) and 12 taxa identified to the genus level. All the occurrences are published openly through the Global Biodiversity Information Facility (GBIF) for the first time. Most of the data were stored in field diaries and, thus, by adding the data in GBIF, we believe that other researchers could benefit from it.

The unfavorable epizootic situation on nematode infestation of populations of the sable Martes zibellina and the pine marten M. martes in Western Siberia

2016 ◽  
Vol 3 (3) ◽  
pp. 325-331
Author(s):  
Жигилева ◽  
O. Zhigileva ◽  
Усламина ◽  
I. Uslamina
Keyword(s):  
Western Siberia ◽  
Nematode Species ◽  
Parasitic Nematodes ◽  
Forest Steppe ◽  
Pine Marten ◽  
The South ◽  
Northern Forest ◽  
North East ◽  
The North ◽  
Pine Martens

Objective of research: to study the nematode infestation of the sable and pine marten in Western Siberia. Materials and methods: Altogether 169 individuals of the sable and 18 — of the pine marten were investigated using the method of partial dissection of the gastrointestinal tract and lungs. Animals were caught according to the hunting license in 2009-2011 and 2014-2015, in 8 areas of Western Siberia from the south taiga to the northern forest-steppe. Results and discussion: We have found four species of parasitic nematodes, two of which (Crenosoma petrovi, Filaroides martis) were localized in lungs and two species (Capillaria putorii, Strongyloides martis) — in the intestine of the sable and the pine marten. Prevalence of lung nematodes was 80%, intestine nematodes — 40%. Intensity of infestation ranged from 26 to 358 nematodes per animal. F. martis is the most pathogenic and most common helminth in martens in Western Siberia. 53,3% of pine martens and 26,5% of sables were infected with this nematode species. Nematode S. martis is the most abundant in the intestine. In pine martens the extensity of invasion was 42,8%, the abundance index — 8.29 helminths per animal; in sables — 9,1% and 1.18, respectively. Pine martens were infected by F. martes and S. martis more than sables (p — 0,05). Prevalence increases in the direction from the North East (taiga) to the South West (sub-taiga), which determines the intensity of the helminthiases focus in biocenoses of Western Siberia. Infection of pine martens in the forest-steppe was not detected. In 2014–2015 compared with the previous study period (2009–2011) the extensity of invasion with intestinal nematodes increased by 1,5–2 times, and with highly pathogenic lung parasites — by 3 times. The increase in the helminth infestation may be explained by the growth of animal population density.

scholarly journals Features of the daily dynamics of trophic activity of various types of blood-sucking mosquitoes (Diptera, Culicidae) in the south of Tyumen region

2018 ◽  
Vol 26 (2) ◽  
pp. 123-127
Author(s):  
T. A. Khlyzova
Keyword(s):  
Air Temperature ◽  
Steppe Zone ◽  
Southern Taiga ◽  
Summer Season ◽  
Forest Steppe ◽  
The South ◽  
Climatic Zones ◽  
Blood Sucking ◽  
The Family ◽  
Birch Forests

We conducted research on the determination of the daily activity of blood-sucking mosquitoes of the family Culicidae in 2005–2015 in the south of Tyumen region in three climatic zones (subzones): the subzone of the southern taiga (Nizhnetavdinsky district), the subzone of aspen-birch forests (Tyumen and Yalutorovsky districts) and in the forest-steppe zone (Isetsky district). In each of the three subzones, counts were conducted twice for the summer season – in June and July. A high number of blood-sucking mosquitoes in the south of the Tyumen region have 24-hour activity. The maximum number in all natural and climatic zones of the region is observed at 23 hours. The daily rhythm of activity of certain species of mosquitoes depends on their abundance in the summer season and on their ecological characteristics. The optimal meteorological conditions under which an active flight of mosquitoes are observed: air temperature 12.6–26.0 °C, relative humidity of air – 54–100% and illuminance – 0–8600 lux. In studying the circadian rhythm, 29 mosquito species of the family Culicidae, belonging to 6 genera: Anopheles, Culiseta, Coquillettidia, Aedes, Ochlerotatus and Culex, were recorded. In the subzone of the southern taiga, we recorded a flight of 25 species, in the subzone of small-leaved aspen-birch forests – 20, and in the forest-steppe zone – 24. The peak of species diversity in all three subzones coincided with the maximum number. All registered species in terms of temperature preferences (thermophilicity) can be conditionally divided into two groups. The first group (10 species) are species that actively attack at a temperature 10–20 °C. The second group (19 species) are species that actively attack at an air temperature 10–30 °C.

scholarly journals Identification of valuable varieties of oats for food purposes in the conditions of the South of Western Siberia

2021 ◽  
Vol 36 ◽  
pp. 01005
Author(s):  
E.Yu. Ignatieva ◽  
I.V. Pakhotina
Keyword(s):  
Correlation Analysis ◽  
Protein Content ◽  
Grain Quality ◽  
Western Siberia ◽  
Forest Steppe ◽  
Lower Content ◽  
The South ◽  
High Quality ◽  
Fine Grain

The article presents the results of a study of samples of glumaceous and hulless oat grown in the conditions of the southern forest-steppe of Western Siberia for cereal properties. The features of assessing the quality of grain of various forms of oat are considered. The research was carried out in the grain quality laboratory of the Omsk ARC in 2018-2020. It was found that hulless forms of oat had an advantage in terms of protein content in grain, nature and yield of cereals in comparison with glumaceous varieties. The glumaceous samples formed a yield 29.6% higher than the hulless ones, and were also distinguished by a lower content of fine grain and a higher weight of 1000 grains. High variation coefficients were determined for the protein content in the grain, the nature and weight of 1000 grains. Correlation analysis revealed a close dependence of the yield of cereal on the nature of the grain, its size and the content of glumas for glumeacous forms, and for hulless with the nature of grain. The glumeacous varieties Uran and Mutika 1178 and hulless Tarsky golozerny, Inermis 1194 and 1189 are recommended for the production of high-quality cereals in the conditions of the South of Western Siberia.

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