Revision of Severianoia (Schwenk, 1926) Travassos, 1929 (Nematoda: Oxyuridomorpha) with proposal of S. pachyiuli n. sp. from millipedes of the Western Caucasus

Nematology ◽  
2020 ◽  
pp. 1-15
Author(s):  
Svetlana V. Malysheva ◽  
Vladimir Yu. Shmatko ◽  
Sergei E. Spiridonov
Keyword(s):  
Genital Tract ◽  
Egg Size ◽  
Western Caucasus ◽  
General Morphology ◽  
Microscope Images ◽  
The Western Caucasus ◽  
Body Level ◽  
The Republic ◽  
Hind Gut ◽  
Posterior Position

Summary Severianoia pachyiuli n. sp. is described from the hind gut of Pachyiulus krivolutskyi (Diplopoda: Julidae) from the Republic of Adygea, Russian Federation. Females of the new species can be distinguished from those of S. magna by a smaller body and egg size; S. glomericola by smaller eggs and S. dubia by the organisation of the genital tract. Females of S. pachyiuli n. sp. are morphologically close to females of S. severianoi, but in described species males have significantly smaller body and spicule size. Severianoia pachyiuli n. sp. mostly resembles S. glomeridis by the general morphology in both sexes but differs in the position of the vulva, which is in a more posterior position to mid-body level in the described species. The description is supplemented with SEM and/or light microscope images of adults, juveniles and mature eggs. The phylogeny of the species is inferred from 18S and 28S rDNA. The taxonomic position of other representatives of Severianoia is discussed and Cephalobellus tipulae linstowi is regarded as a junior synonym of S. glomeridis.

scholarly journals Water Bodies Restoration: Examples of the Western Caucasus Basin District Small Rivers

2010 ◽  
Author(s):  
Keyword(s):  
Water Bodies ◽  
Monitoring Data ◽  
Small Rivers ◽  
Western Caucasus ◽  
Protective Measures ◽  
The Western Caucasus ◽  
The Republic

The paper has been prepared on the basis of the review of water bodies management and restoration methods used in Western Caucasus Basin District. According to the monitoring data, status of many water bodies is unsatisfactory due to their pollution and clogging. Clearing of small rivers in terms of silting and overgrowing in combination with other water/protective measures is the main kind of restoration activities. Restoration works at the Nazranka River in the Republic of Ingushetia and the Elistinka River in the Republic of Kalmikia are given as the relevant examples.

Comparative Evaluation of the Stability of the Brown Forest Soils of Crimea and the Caucasus to Pollution with Heavy Metals

2021 ◽  
Vol 25 (1) ◽  
pp. 65-71
Author(s):  
S.I. Kolesnikov ◽  
D.I. Moshchenko ◽  
A.A. Kuzina ◽  
T.A. Ter-Misakyants ◽  
E.N. Nevedomyaya ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Forest Soils ◽  
Biological Indicators ◽  
Western Caucasus ◽  
Maximum Permissible Concentrations ◽  
The Crimea ◽  
The Western Caucasus ◽  
Central Caucasus ◽  
The Republic ◽  
Brown Forest Soils

This article assesses the resistance of brown forest soils of the Republic of Crimea, the Western and Central Caucasus to pollution by lead, chromium, nickel, and copper, and develops regional maximum permissible concentrations of these heavy metals. Soil contamination was modeled under laboratory conditions. Heavy metals were added in the form of oxides. Soil stability assessment was carried out by biological indicators. The brown forest soil of the Republic of Crimea proved to be the most resistant to pollution. The higher stability of the brown forest soils of the Western Caucasus relative to similar soils of the Central Caucasus, apparently, is determined by the higher content of organic matter in them, despite their lower acidity. Heavy metals formed the following series in terms of ecotoxicity for brown forest soils: Cr> Cu ≥ Ni ≥ Pb. The values of regional maximum permissible concentrations of lead, chromium, nickel and copper in the brown forest soils of the Crimea, Central and Western Caucasus are proposed.

THE PROBLEM OF THE OTTOMAN ADMINISTRATION OF THE BLACK SEA COAST OF THE WESTERN CAUCASUS THROUGH THE PRISM OF THE ACTIVITIES OF CAUCASIAN PIRACY (ABKHAZ, CIRCASSIAN)

2019 ◽  
Vol 10 (6/1) ◽  
pp. 37-47
Author(s):  
Anri R. CHEDIYA
Keyword(s):  
Black Sea ◽  
Historical Research ◽  
The Black Sea ◽  
Western Caucasus ◽  
The North ◽  
15Th Century ◽  
Black Sea Coast ◽  
The Western Caucasus ◽  
The Republic ◽  
Sea Coast

The Black Sea coast of the Western Caucasus is the coastline from the border of the Republic of Abkhazia with Georgia along the Ingur river in the south, to the Taman Peninsula in the north. The territory of the region covers the Black Sea coast of the Republic of Abkhazia and the Russian Federation (Krasnodar Territory). The Western Caucasus entered the sphere of influence of the Ottoman Empire during the period when the Ottomans conquered the main Black Sea fortresses by the 15th century. However, it is difficult to say that the Ottomans achieved full control over the region in the period from the second half of the 15th century until the first quarter of the 19th century. One of the main factors preventing the Ottoman control over the region was the activity of Abkhaz and Circassian piracy. The subject of research of this article is the problem of piracy as a factor of instability of the Ottoman presence on the Black Sea coast of the Western Caucasus. The article was written on the traditional, specifically historical research methods: historical-genetic (the study of historical phenomena in the process of their development, from birth to death), historicalcomparative, and historical-typological. Translating a document of the Ottoman archives of the Prime Minister of the Republic of Turkey, base the main theoretical and practical methods of historical research are used.

On the History of the Anglo-Russian Confrontation in the Western Caucasus

2021 ◽  
pp. 66-72
Author(s):  
Zalina V. Sosranova ◽  
Zalina M. Basieva
Keyword(s):  
Black Sea ◽  
Political Activity ◽  
Legal Rights ◽  
The Black Sea ◽  
Western Caucasus ◽  
The Caucasus ◽  
European Continent ◽  
North West ◽  
The Western Caucasus ◽  
Xix Century

The article examines the scale and methods of the anti-Russian military-political activity of British emissaries in the Western Caucasus in the first half of the 19th century. The scientific novelty lies in the fact that for the first time in the work the intelligence activity of British “traveling” agents in the Western Caucasus is subjected to a special study, as an independent, gaining strength way of fighting in international contradictions for the Caucasus. The relevance of the topic of the proposed article seems to us indisputable due to the incompleteness of international rivalry and the eternal Eastern question. Russian Empire in the late 20s — early 30s XIX century. took possession of all legal rights to the North-West Caucasus and outlets to the Black Sea. With its confident military successes and new territorial accessions, Russia threw a serious challenge to the European powers, and especially England, the dominant power on the European continent at that time. One of the most important tasks of England is to nullify all the achievements of Russia in Turkey and prevent its consolidation in the territory of the Western Caucasus. England, adhering to the favorite method of “raking in the heat with someone else’s hands”, and in Circassia is testing its effectiveness. Since the 30s. XIX century. Numerous British agents flooded the Caucasus, turning the Circassians against Russia. The Black Sea coast of the Caucasus has become a place of uninterrupted supply of weapons to the mountaineers. As a result of the work, the author comes to the conclusion that the sources considered in the work can represent a scientific basis for confirming the involvement of Britain in anti-Russian agitation in the Western Caucasus. The uninterrupted supply of weapons to the highlanders organized by British agents helped to maintain military tension and a fighting spirit in Circassia.

scholarly journals Estimation of long-term Ph changes in lakes of the Caucasus using a bioindication method based on diatomaceous analysis

2019 ◽  
Vol 46 (1) ◽  
pp. 51-57 ◽  
Author(s):  
L. V. Razumovskii ◽  
V. L. Razumovskii
Keyword(s):  
Sediment Cores ◽  
Western Caucasus ◽  
Small Lakes ◽  
The Caucasus ◽  
Ph Values ◽  
Long Term Changes ◽  
The Western Caucasus ◽  
Central Caucasus ◽  
Hydrological Parameter

To analyze processes that may lead to long-term changes in pH, lake sediments from five small lakes in the Western and Central Caucasus were studied according to diatomaceous complexes from sediment cores. A proprietary principle of hydrological parameter unification was used to reconstruct numerical pH values. In isotopic dating experiments, a series of numerical pH values for 2000–130 years were generated for the lakes. These data indicate an absence of noticeable changes in pH in the lakes of the Western Caucasus and alkalization processes in the lakes of the Central Caucasus.

Cryptic diversity of stygobiotic shrimp genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae): the first case of species co-occurrence in the same cave system in the Western Caucasus

Zootaxa ◽  
2018 ◽  
Vol 4441 (2) ◽  
pp. 201 ◽  
Author(s):  
IVAN MARIN
Keyword(s):  
Morphological Analysis ◽  
Genetic Data ◽  
Cryptic Diversity ◽  
Western Caucasus ◽  
Genetic Lineages ◽  
Karst Caves ◽  
Cave System ◽  
First Case ◽  
The Western Caucasus ◽  
A New Species

DNA barcoding of stygobiotic shrimps of the genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae) collected in underground streams flowing inside two neighboring large karst caves (Otap and Abrskil сaves) revealed the presence of two distinct genetic lineages representing the first case of species co-occurrence in the Western Caucasus. The paper presents the complete morphological re-description of stygobiotic atyid shrimp Xiphocaridinella ablaskiri (Birštein, 1939) and the description of a new species using genetic and morphological analysis. Other known cases of co-occurrence of several stygobiotic shrimp species in the same cave system as well as new genetic data (COI mtDNA) on Western Caucasian species of the genus Xiphocaridinella are discussed in the paper. 

Robinia pseudoacacia L. in the Western Caucasus

2016 ◽  
Vol 7 (2) ◽  
pp. 105-118 ◽  
Author(s):  
V. V. Akatov ◽  
T. V. Akatova ◽  
A. E. Shadzhe
Keyword(s):  
Robinia Pseudoacacia ◽  
Western Caucasus ◽  
The Western Caucasus ◽  
Robinia Pseudoacacia L
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