scholarly journals 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

2020 ◽  
pp. 318-335
Author(s):  
I. A. Kondratenkov ◽  
M. L. Oparin ◽  
S. V. Sukhov ◽  
O. S. Oparina
Keyword(s):  
Species Abundance ◽  
Volga Region ◽  
Homogeneous Population ◽  
Saratov Region ◽  
Population Peak ◽  
Volga Upland ◽  
Ulyanovsk Region ◽  
Data Book ◽  
The Right ◽  
New Settlements

The paper presents data on the abundance of bobak marmot (Marmota bobak Müller, 1776), obtained from 1987 till 2019. All censuses were performed according to one technique developed by us in the late 1980s. During these long-term investigations, the structure of the bobak marmot areal in the Saratov region was studied. The dynamics of its numbers is described, and its trends for individual groups of districts were revealed, distinguished by trends, the time of the appearance of new settlements as a result of reintroduction after a prolonged depression in the numbers caused by both plowing of the steppes and the well-known events of the 1920s, 1930s and 1040s, when the bobak marmot provided the survival of some part of the population. It has been established that the population peak in the indigenous settlements that have been existing from the end of the Pleistocene – the beginning of the Holocene, was in 1980–1990. New settlements arise in the territories where the marmot was reintroduced, and the species abundance continues to grow. This, first of all, refers to the western slopes of the Volga Upland and the Oka-Don plain, formerly inhabited by marmots. An increase in the numbers of the Kazakhstan subspecies of the bobak is observed at the eastern end of the Syrt plain and on the spurs of the Common Syrt in the Saratov Trans-Volga region. The genetic studies of steppe marmots by R. V. Naumov (2019) on the right Volga bank of the Ulyanovsk region showed that a genetically homogeneous population lives on the vast territory of the Volga region. This casts doubt on the assumption of the existence of the Kozlovi subspecies of the bobak marmot in the local territories of the Voskresensk, Volsk and Khvalynsk districts of the Saratov region, which served as the ground for its inclusion into the new edition of the Red Data Book of the region, which we consider unreasonable (Resolution..., 2019).

scholarly journals Flora and vegetation features of the stow «Chalk slopes to the Proval river» (Ulyanovsk Region)

2019 ◽  
Vol 8 (4) ◽  
pp. 78-82
Author(s):  
Sergey Vladimirovich Saksonov ◽  
Lyubov Aleksandrovna Novikova ◽  
Vladimir Mikhailovich Vasjukov ◽  
Nikolay Sergeevich Rakov ◽  
Stepan Aleksandrovich Senator ◽  
...  
Keyword(s):  
Protected Areas ◽  
Floristic Composition ◽  
Study Results ◽  
Linum Flavum ◽  
Volga Upland ◽  
Ulyanovsk Region ◽  
Data Book ◽  
Pulsatilla Patens ◽  
High Degree ◽  
Vegetation Study

The paper contains the vegetation study results of the valuable botanical object Chalk slopes to the Proval river. The stow is located in the vicinities of the village Beketovka (Veshkaymsky District of Ulyanovsk Region) and is proposed for inclusion in the regional network of protected areas. The data of floral and phytocenotic studies are presented. The flora of the stow Chalk slopes to the Proval river contains 287 species of vascular plants including 8 species listed in Red data book of the Russian Federation: Hedysarum gmelinii , Iris aphylla , Koeleria sclerophylla , Matthiola fragrans , Pinus cretacea [ P. sylvestris var. cretacea ], Stipa pennata , S. pulcherrima , Thymus dubjanskyi [ Th. cimicinus auct. p. max. p.]. The regional rare and requiring protection plants are Adonanthe vernalis , Anemone sylvestris , Asperula exasperata , Aster alpinus , Betula krylovii , Bupleurum falcatum , Carex pediformis , Centaurea ruthenica , Crepis pannonica , Delphinium cuneatum , Galatella linosyris , Galium hexanarium , Gentiana cruciata , Gentianella amarella , Helianthemum canum , H. nummularium , Helictotrichon desertorum , Herminium monorchis , Jurinea ledebourii , Linum flavum , L. uralense , Onosma simplisissima s. str., O. volgensis , Otites baschkirorum , Parnassia palustris , Polygala cretacea , P. sibirica , Pulsatilla patens , Scabiosa isetensis , Schoenus ferrugineus . Calcephitic florocoenotic complex of the stow Chalk slopes to the Proval river (Ulyanovsk Region) is characterized by a mosaic of vegetation. Here, in a relatively small area, meadow, petrophytic and grass-mixed steppes, forest edges communities are presented. The floristic composition of these communities is peculiar and characterized by the presence of a large number of rare species including relict and endemic elements. In addition, in the central part of the Volga Upland, only a small amount of erosion-chalk landscapes with a high degree of preservation is known. The studied stow is recommended for inclusion in the system of protected areas of the Ulyanovsk Region.

scholarly journals NEW REVIEW OF POACEAE OF THE MIDDLE VOLGA REGION

Ekosistemy ◽  
2020 ◽  
pp. 43-62
Author(s):  
S. V. Saksonov ◽  
V. M. Vasjukov ◽  
S. A. Senator
Keyword(s):  
Higher Plants ◽  
Taxonomic Composition ◽  
Volga Region ◽  
The South ◽  
Middle Volga Region ◽  
Psathyrostachys Juncea ◽  
Nardus Stricta ◽  
Ulyanovsk Region ◽  
Middle Volga ◽  
Herbarium Collections

Grasses one of the largest families of higher plants, including about 12000 species from 950 genera. The paper presents up-to-date information about the taxonomic composition, geographical distribution and habitat conditions of cereals in the South of the Middle Volga region (within the Penza, Samara and Ulyanovsk regions). studies of Grasses were conducted throughout the southern Middle Volga region, and herbarium collections stored in LE, MOSP, MW, PKM, PVB, etc. were also studied. Agrostology the South of the Middle Volga region are 72 genera (including 2 nothogenera) and 221 species (including 5 nothospecies). In the flora of the Southern Middle Volga region, 20 rare species of Grasses, of which 5 species are included in the Red book of the Russian Federation (2008): Koeleria sclerophylla, Stipa dasyphylla, S. pennata, S. pulcherrima, S. zalesskii; 14 species – in the Red book of the Penza region (2013): Drymochloa sylvatica, Festuca wolgensis, Helictotrichon desertorum, Melica transsilvanica, Scolochloa festucacea, Stipa borysthenica, S. dasyphylla, S. lessingiana, S. pennata, S. pulcherrima, S. sareptana, S. tirsa, S. zalesskii, Trisetum sibiricum; 18 species – in the Red book of the Samara region (2017): Avenula pubescens, Bromopsis benekenii, Catabrosella humilis, Cinna latifolia, Cleistogenes squarrosa, Drymochloa sylvatica, Elytrigia pruinifera, Helictotrichon schellianum, Koeleria sclerophylla, Pholiurus pannonicus, Poa saksonovii, Psathyrostachys juncea, Stipa dasyphylla, S. korshinskyi, S. pennata, S. pulcherrima, S. tirsa, S. zalesskii; 18 species – in the Red book of the Ulyanovsk region (2015): Catabrosella humilis, Cleistogenes squarrosa, Drymochloa sylvatica, Festuca cretacea, F. wolgensis, Helictotrichon desertorum, Koeleria sclerophylla, Leymus ramosus, Nardus stricta, Psathyrostachys juncea, Stipa borysthenica, S. dasyphylla, S. korshinskyi, S. lessingiana, S. pennata, S. pulcherrima, S. tirsa, S. zalesskii. Only Poa saksonovii is endemic to the South of the Middle Volga region; 5 types of Grasses are described from the study area: Festuca wolgensis, Koeleria sclerophylla, K. transvolgensis, Leymus paboanus, Poa saksonovii.

scholarly journals Geographical conditions and evolution of vegetation cover of Middle Volga Region in the pliocene

2016 ◽  
Vol 5 (1) ◽  
pp. 56-62
Author(s):  
Stepan Aleksandrovich Senator ◽  
Vladimir Pavlovich Morov
Keyword(s):  
Vegetation Cover ◽  
Volga Region ◽  
Middle Volga Region ◽  
Winter Temperatures ◽  
Volga Upland ◽  
Middle Volga ◽  
Climate Cooling ◽  
Landscape Transformations ◽  
The Given ◽  
Upper Boundary

The development of flora on the territory of the Middle Volga region during the Pliocene is discussed. An attempt to reconstruct geographic conditions and vegetation cover is taken. A short description of the natural environment and landscape, of the vegetation cover of the Middle Volga and adjacent territories is done. The comparative scheme of the total and the regional scales of Pliocene is added. In the given paper one assumes the upper boundary of the Pliocene to be the upper boundary of the Gelasian Stage. The Pliocene is rather turbulent geological period during there was a relatively quick change of warm and cold phases, each of which is characterized by landscape and climate change. Landscape transformations took place against a background of progressive climate cooling with an increase in the contrast of summer and winter temperatures. Main geomorphological structures of the Middle Volga region, such as the Volga Upland, Samara Bend, Zhiguli Mountains, Obshhij Syrt, river network, appeared prior or during this period. Main plant formations in their broadest sense (taiga, broad-leaved and small-leaved forests, steppes) had already been formed by the beginning of the Pliocene. During the Pliocene period the depletion of those plant formations took place. It occurred due to the gradual extinction of thermophilic species and bringing in their composition to modern formations. Most of the species had taken modern form by the end of the Pliocene.

scholarly journals TRADITIONAL MUSIC AND POETRY OF THE TATARS-MISHARS: MODERN FORMS OF EXISTENCE

2019 ◽  
Vol 7 (6) ◽  
pp. 477-480
Author(s):  
Svetlana Vladimirovna Karkina ◽  
Nelya Khabibullovna Nurgayanova ◽  
Manpreet Kaur
Keyword(s):  
Traditional Music ◽  
Future Generations ◽  
Distribution Area ◽  
Original Material ◽  
Musical Culture ◽  
Language Groups ◽  
Western Group ◽  
Ulyanovsk Region ◽  
Middle Volga ◽  
The Right

Purpose: The Tatars-Mishars are an ethnographic group of the middle Volga and Ural Tatars. Their speech is based on a special dialect and belongs to the Western group of the Tatar language. The Tatars-Mishars were settled on the Right Bank of the Volga in Mordovia, Chuvashia, Tatarstan, Bashkortostan, as well as in the Nizhny Novgorod, Penza, Ryazan, Samara, Saratov, and Ulyanovsk regions. The Mishar sub-ethnic group is divided into three ethnographic components – Sergach, Temnik, and lambir, each of which has its own linguistic and ethnocultural features. The object of our attention is the traditional musical and poetic creativity of the Tatar-Mishars of the Ulyanovsk region, which is a unique layer, characterized by the preservation and to date the existence of original folklore genres. Methodology: In the article the analysis of the materials obtained by the authors during expeditions in the Ulyanovsk region, where the ignorance relating to the khvalynskoe, Karsunsky and melekessky language groups. As a result of research various and interesting, to some extent, the original material was recorded. When collecting information, the instruction on collecting musical folklore was used for detailed certification of the recorded sample, which allowed to identify the distribution area, local features, the picture of the modern functioning of the works of traditional musical and poetic creativity. Results: In general, the study showed that the traditional musical culture of the Tatar-Mishars of the Ulyanovsk region, is a distinctive layer, characterized by a variety of genres and styles. This lyrical lingering and short tunes, takmaks and lyric-epic genres baits, munajat. Application: Therefore, the study and preservation for future generations of musical and poetic folklore of the Tatar-Mishars, which has inexhaustible wealth, will allow feeling the original and universal foundations of spirituality of the Tatar people and its culture.

scholarly journals Variability and interconnection of economically useful indicators of soybeans under the influence of herbicides

2020 ◽  
pp. 19-22
Author(s):  
Yuriy Viktorovich Lobachev ◽  
Valeriy Tikonovich Krasilnikov
Keyword(s):  
Correlation Analysis ◽  
Grain Yield ◽  
Protein Content ◽  
Field Experiments ◽  
Specific Effect ◽  
Correlation Dependence ◽  
Saratov Region ◽  
Grain Productivity ◽  
Control Variant ◽  
The Right

Under the conditions of the Right Bank of the Saratov Region, the effect of four herbicides, two new tank mixtures and two new compositions of herbicides on the value and variability of the following indicators of soybeans: “grain yield”, “number of beans from a plant”, “the number of grains per plant", "the mass of 1000 grains", "the protein content in the grain” was studied in three field experiments using two-way   variance and correlation analysis. The relationships between grain yield and elements of its structure, grain yield and protein content in grain are studied. All studied variants after application of herbicides significantly exceeded the control variant in grain yield. Options with the use of a new tank mixture of frontier optima + gezagard herbicides, frontier optima + galaxy top herbicidal compositions, hezagard + galaxy top herbicide compositions significantly exceeded the grain yield after application of  herbicides. This led to a decrease in the variability of the studied indicators and changed the nature of the correlation dependence of grain productivity with other economically useful indicators of soybeans. The specific effect of the application of individual herbicides, their tank mixtures and compositions on the variability and interconnection of economically useful indicators of soybeans has been established.

scholarly journals Influence of the anthropogenic factor on the predatory entomophages in agrocenose of spring wheat in the right bank of the Saratov region

2018 ◽  
pp. 49-53
Author(s):  
L.I. Chekmareva ◽  
◽  
D.M. Likhatsky ◽  
S.G. Likhatskaya ◽  
O.L. Tenyaeva ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Anthropogenic Factor ◽  
Saratov Region ◽  
The Right

scholarly journals Halobacterium salinarum virus ChaoS9, a Novel Halovirus Related to PhiH1 and PhiCh1

Genes ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 194 ◽  
Author(s):  
Mike Dyall-Smith ◽  
Peter Palm ◽  
Gerhard Wanner ◽  
Angela Witte ◽  
Dieter Oesterhelt ◽  
...  
Keyword(s):  
Unit Length ◽  
Halobacterium Salinarum ◽  
Tail Fiber ◽  
Homogeneous Population ◽  
Head Assembly ◽  
Linear Dsdna ◽  
Natrialba Magadii ◽  
The Right ◽  
Haloarcula Hispanica ◽  
Assembly Proteins

The unexpected lysis of a large culture of Halobacterium salinarum strain S9 was found to be caused by a novel myovirus, designated ChaoS9. Virus purification from the culture lysate revealed a homogeneous population of caudovirus-like particles. The viral genome is linear, dsDNA that is partially redundant and circularly permuted, has a unit length of 55,145 nt, a G + C% of 65.3, and has 85 predicted coding sequences (CDS) and one tRNA (Arg) gene. The left arm of the genome (0–28 kbp) encodes proteins similar in sequence to those from known caudoviruses and was most similar to myohaloviruses phiCh1 (host: Natrialba magadii) and phiH1 (host: Hbt. salinarum). It carries a tail-fiber gene module similar to the invertible modules present in phiH1 and phiCh1. However, while the tail genes of ChaoS9 were similar to those of phiCh1 and phiH1, the Mcp of ChaoS9 was most similar (36% aa identity) to that of Haloarcula hispanica tailed virus 1 (HHTV-1). Provirus elements related to ChaoS9 showed most similarity to tail/assembly proteins but varied in their similarity with head/assembly proteins. The right arm (29–55 kbp) of ChaoS9 encoded proteins involved in DNA replication (ParA, RepH, and Orc1) but the other proteins showed little similarity to those from phiH1, phiCh1, or provirus elements, and most of them could not be assigned a function. ChaoS9 is probably best classified within the genus Myohalovirus, as it shares many characteristics with phiH1 (and phiCh1), including many similar proteins. However, the head/assembly gene region appears to have undergone a recombination event, and the inferred proteins are different to those of phiH1 and phiCh1, including the major capsid protein. This makes the taxonomic classification of ChaoS9 more ambiguous. We also report a revised genome sequence and annotation of Natrialba virus phiCh1.

scholarly journals Hematopoietic Stem Cells: Nature and Niche Nurture

2021 ◽  
Vol 8 (5) ◽  
pp. 67
Author(s):  
Geoffrey Brown
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Hematopoietic Stem Cells ◽  
Ex Vivo ◽  
Cell Lineage ◽  
Bone Marrow Niche ◽  
Hematopoietic Stem ◽  
Homogeneous Population ◽  
Starting Point ◽  
The Right

Like all cells, hematopoietic stem cells (HSCs) and their offspring, the hematopoietic progenitor cells (HPCs), are highly sociable. Their capacity to interact with bone marrow niche cells and respond to environmental cytokines orchestrates the generation of the different types of blood and immune cells. The starting point for engineering hematopoiesis ex vivo is the nature of HSCs, and a longstanding premise is that they are a homogeneous population of cells. However, recent findings have shown that adult bone marrow HSCs are really a mixture of cells, with many having lineage affiliations. A second key consideration is: Do HSCs “choose” a lineage in a random and cell-intrinsic manner, or are they instructed by cytokines? Since their discovery, the hematopoietic cytokines have been viewed as survival and proliferation factors for lineage committed HPCs. Some are now known to also instruct cell lineage choice. These fundamental changes to our understanding of hematopoiesis are important for placing niche support in the right context and for fabricating an ex vivo environment to support HSC development.

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