Journal articles: 'Selemdzha River Region (Russia)'

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Probatova, N. S. "New taxa in Agrostis, Bromopsis, Koeleria and Poa (Poaceae) from the Russian Far East." Novitates Systematicae Plantarum Vascularium, no. 49 (2018): 5–13. http://dx.doi.org/10.31111/novitates/2018.49.5.

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Five new species of the family Poaceae are described from the Russian Far East: Agrostis czernjaginae Prob. (sect. Trichodium) (revealed chromosome number 2n = 42) from thermal springs of Kamchatka, Bromopsis kozhevnikovii Prob. (sect. Rhizomatosae) from high mountains of Dusse-Alin Range in the Khabarovsk Territory, Poa amurica Prob. (sect. Stenopoa) from Selemdzha River in the Amur Region, Koeleria dersu Prob. et Prokopenko (sect. Koeleria) from the eastern macroslope of Sikhote-Alin in the Primorye Territory, Agrostis × lapenkoi Prob. (probably, intersectional hybrid: A. giganteaRoth × A. clavata Trin.) from Ussuri River basin, also in the Primorye Territory.

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Borisova, I. G. "Vegetation map of Norsky nature reserve (Amur Region)." Geobotanical mapping, no. 2020 (December 2020): 24–38. http://dx.doi.org/10.31111/geobotmap/2020.24.

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The Norsky State Nature Reserve is located in Selemdzhinsky district of the Amurskaya oblast. Its area is 211 168 ha. Currently the flora of the Norsky Nature Reserve is studied in details. A species list has been published and an analysis of the flora has been made (Starchenko, Chuvasheva, 1993; Veklich, 2009). The vegetation cover is poorly studied; so far no geobotanical map of the Reserve has been compiled. Only the overview map (scale 1 : 2 500 000) of the vegetation of the Amur basin (1969) gives an idea of the vegetation as a whole. The climatic characteristics of the territory and the complex relief determine the diversity of plant habitats and their communities. The climate of the Norsky Reserve is continental with monsoon features and even ultracontinental (after A. I. Kaigorodov (1955). The modern relief of the Reserve includes wide floodplains of Nora and Selemdzha rivers, accumulative delta-terraces plain, Norskaya accumulative denudation plain (Geomorphologiya..., 1973) and hills. According to the latest botanical and geographical zoning of the Amurskaya oblast, the Norsky Reserve belongs to the Mamynskiy and Ulmsko-Aldikonskiy districts of the Turan-Mamyn province of the Manchurian subdistrict of the East Asian area (Borisova,Starchenko, 2018). The province belongs to southern taiga with some elements of nemoral forests (Quercus mongolica, Tilia amurensis and etc.) along the valleys of Selemdzha River and its major tributaries. The southern taiga includes different larch forests (often disturbed), derived birch-larch forests with Pinus sylvestris, Picea ajanensis and Abies nephrolepis. The presence of nemoral species in forest cenoses increases in the direction from north to south. A province peculiarity is the wide distribution of larch peatmoss forests, swamps and wet meadows. The scientific-reference typological map of vegetation on a medium scale (1 : 300 000) was compiled for the Norsky Nature Reserve for the first time. It shows spatial patterns of vegetation distribution in connection with the natural features of the territory (Fig. 5). The vegetation map legend is based on an ecologic and phytocoenotic classification. A zonal distribution of plant communities is presented in the legend. Plant communities are divided into some categories: dark-coniferous, light-coniferous and derived forests, which are represented as formations. The main cartographic units are groups of associations and their various combinations. The legend shows the vegetation of floodplains, rocks, and disturbed areas. Vegetation divisions are represented on the vegetation map by seventeen colors and one extra scale sign. All symbols have their own serial number, which is marked in the map legend. The largest areas on the territory of the Reserve are occupied by larch forests — 42 % (Fig. 6). The forested territory as a whole occupies 36.5 %, of which the largest areas are rhododendron larch (9.7 %) and floodplain (9.5 %) forests. Ledum larch and moss-shrub forests occupy 5.7 %. Larch mixed-grass-shrub forests cover some small areas (2.0 %). Sub-taiga larch forests with nemoral grasses and often with oak and black birch trees occupy 0.6 %. Pine and larch-pine forests extend 1.3 % of the Reserve’s area. Fir-spruce forests on watersheds have limited distribution — about 1 %. They are a chain of ecologic-dynamic series on floodplain occupying 2.7 % of the Reserve’s area. To conclude, the vegetation cover of the Norsky Nature Reserve reflects the zonal and provincial features of the territory.

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Kryukov, Viktor. "Revaluation of ‘old’ ore mining areas of the Amur River region (Russia)." E3S Web of Conferences 56 (2018): 04007. http://dx.doi.org/10.1051/e3sconf/20185604007.

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In recent years, highly liquid precious metals have been mined in the Russian Far East. The state fund has no facilities with confirmed reserves. However, there is a real possibility of reviving the ‘old’ mining areas. Based on the Lower Amur region (Khabarovsk region) the prospects of gold reserves accumulation using ‘small’ fields (in 50-80-s conception) are considered. It deems new to determine the potential of these facilities from the viewpoint of large-scale mineralization and to involve the territory under consideration in the assessment of the gold-bearing manifestations. ‘Reference’ deposits were selected and their specific productivity was assessed, which was extended to similar by properties manifestations. Within the Lower Amur region, geological investigations revealed about 300 small deposits and mineral occurrences. 34 objects localized at the clusters of submeridional and sublatitudinal faults intersection, were identified as promising. Basically, the gold-ore blocks were compared with the ‘standards’: Belogorsky (near-surface), Dyappe (subvolcanic) and Zimovye (hypabyssal). The determining factors were the structural features of mineralization localization, facies conditions, the ores composition and metasomatites, the zonality of ore-metasomatic formations, the erosion of objects and the completeness of hydrothermal processes. The author’s assessment is confirmed by the results of exploration works at 15 ‘small’ deposits and ore occurrences, with the transfer of 11 of them to the category of large and medium-sized.

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Kaila, Lauri. "Two new Elachista species (Lepidoptera, Elachistidae) from the Polar Urals region, Russia." Entomologica Fennica 8, no. 4 (1997): 219–23. http://dx.doi.org/10.33338/ef.83948.

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Two new species of Ehchista (Lepidoptera, Elachistidae) are described on the basis of material collected from the Sob River valley in the Polar Urals, and in the vicinity of Labytnangi on the shores of the Ob River: Elachista jaskai sp. n., which is assigned to fhe Elachista bifasciella group, and Elachista ripula sp. n., related to Elachista triatomea in the Elachista argentella group. E. ripula sp.n.is also reported from northern Finland. Diagnostic characteristics for the new species are given. Photographs of the habitus and genitalia are provided for the new species.

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Kuznetsova, Ekaterina S., Olga A. Kataeva, Dmitry E. Himelbrant, and Jurga Motiejūnaitė. "Lichens and allied fungi of the Ragusha River Protected Area (Leningrad Region, Russia)." Folia Cryptogamica Estonica 53 (November 10, 2016): 71. http://dx.doi.org/10.12697/fce.2016.53.09.

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The lichen biota of the Ragusha River (protected area in Leningrad Region) is studied. In total 221 species (211 lichenized, 5 lichenicolous and 5 saprobic fungi) are listed. Lecanora perpruinosa is new to North-Western European Russia. Lathagrium fuscovirens, Pronectria erythrinella, Protoblastenia rupestris, Thelidium minutulum, T. zwackhii and Tremella hypogymniae are reported for the first time for Leningrad Region, and Ochrolechia bahusiensis for Eastern Leningrad Region. The most noteworthy part of lichen biota is the complex of 21 calcicolous lichens. Eleven of them are known in the region only from the Ragusha River valley.

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Stepanchikova, I. S., G. M. Tagirdzhanova, and D. E. Himelbrant. "The lichens and allied fungi of the Smorodinka River Valley (Leningrad Region)." Novosti sistematiki nizshikh rastenii 47 (2013): 262–78. http://dx.doi.org/10.31111/nsnr/2013.47.262.

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Altogether 244 species of lichen-forming, lichenicolous and non-lichenized fungi are reported from the Smorodinka River Valley, a projected protected natural area (Leningrad Region). Arthonia biatoricola Ihlen et Owe-Larss. and Gyalideopsis alnicola W. J. Noble et Vězda are reported for the first time for Russia, Fellhaneropsis myrtillicola (Erichsen) Serus. et Coppins and Phaeocalicium flabelliforme Tibell — for European Russia, Aspilidea myrinii (Fr.) Hafellner and Lepraria borealis Lohtander et Tonsberg are new to the Leningrad Region, Gregorella humida (Kullh.) Lumbsch, Mycoblastus alpinus (Fr.) Th. Fr. ex Hellb., Phaeocalicium populneum (Brond. ex Duby) Alb. Schmidt and P. praecedens (Nyl.) Alb. Schmidt are new to the Western Leningrad Region. The nearest to St. Petersburg locality of Lobaria pulmonaria (L.) Hoffm. on Karelian Isthmus has been found in the Smorodinka River Valley.

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Seleznevа, A. V., and I. S. Dedovа. "Morphogenetic analysis of erosion topography the right Volga river bank (Volgograd region, Russia)." Geomorphology RAS, no. 4 (November 8, 2019): 88–101. http://dx.doi.org/10.31857/s0435-42812019488-101.

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The article is devoted to a detailed morphogenetic analysis of erosion topography of the right Volga river bank (Volgograd region, Russia). The estimation of the factors in the development of erosion processes: lithological, geomorphological, climatic, biotic. It is established that the general trends of the development and the propagation of gully systems depend on the zonal conditions, and their specificity from structural-lithological and geomorphological features of the area. The actual basis for the work, based on data from field observations, interpretation of satellite imagery, morphometric processing of topographic maps. The obtained results were used for compiling maps, morphometric characteristics of the relief and zoning of the right bank of the Volgograd city according to the intensity of erosion processes. It was established that the studied area is among the most erosion-affected territories in the European part of Russia with the average erosion density of the network from 0.10.3 up to 34 km/km2. Comparison of factors determining the intensity of the evolution and morphology of gully systems led to the conclusion that modern intensification of erosion is the result of economic activities.

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Baigusheva, Vera S., and Vadim V. Titov. "Late Middle—Early Late Pleistocene Mammoths from the Lower Don River Region (Russia)." Quaternary 4, no. 1 (2021): 5. http://dx.doi.org/10.3390/quat4010005.

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The remains of “early” mammoths from a number of localities of the late Middle—early Late Pleistocene on the territory of the South of European Russia (the basin of the Don River, Rostov Region) are described. The description of the teeth and bones of a postcranial skeleton is given. Teeth characteristics (number of plates, lamellar frequency and enamel thickness) allow determining the finds as Mammuthus intermedius, described from the territory of France but known from other regions of Western Europe and Western Siberia as well. In Eastern Europe, this form was a typical representative of the Khazarian theriocomplex and existed during the MIS 5–7 interval. This mammoth taxon differs noticeably from the typical woolly mammoth M. primigenius, which appeared in continental Europe during MIS 4.

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Артемьев, Сергей Николаевич, Александр Павлович Новоселов, Николай Владимирович Климовский, Геннадий Александрович Дворянкин, and Олег Станиславович Дурныкин. "Results of zoobentos research in river Sotka, PINEZHSKY STATE RESERVE (Arkhangelsk region, Russia)." Herald of Tver State University. Series: Biology and Ecology, no. 1(61) (April 13, 2021): 16–30. http://dx.doi.org/10.26456/vtbio183.

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В статье рассмотрен качественный состав (видовое и таксономическое разнообразие) и количественные показатели (встречаемость, численность и биомасса) зообентоса р. Сотка в пространственном аспекте. Выявлены участки реки с минимальной и максимальной численностью и биомассой. Определены доминирующие группы донных животных по численности (личинки хирономид и малощетинковые черви) и биомассе (двукрылые, олигохеты и двустворчатые моллюски). На основе кластерного анализа (по видовому сходству) станции отбора бентосных проб объединены в 2 группы. Качество вод оценено как условно чистое - слабо загрязненное. Проведенные исследования зообентоса в уникальной реке на территории заповедника Пинежский будут использованы при ведении комплексного мониторинга качества вод и биотической части ее экосистемы (фито- и зоопланктон, зообентос, ихтиофауна), включая и приточную систему. The article considers the qualitative composition (species and taxonomic diversity) and quantitative indicators (occurrence, number and biomass) of zoobenthos of river Sotka in the spatial aspect. The sections of the river with the minimum and maximum abundance and biomass were identified. The dominant groups of benthic animals were determined by their numbers (chironomid larvae and small-bristle worms) and biomass (dipterans, oligochaetes and bivalve mollusks). Comparison of quantitative indicators in the annual aspect revealed a significant increase in biomass and relative stability of abundance over a 20-year period at the Filippovskoye site, as well as a decrease in numbers and biomass at the Moiseev Nos site. Based on cluster analysis (by species similarity), benthic sampling stations are combined into 2 groups. Water quality is assessed as conditionally pure, slightly polluted. Studies of zoobenthos in a unique river on the territory of the Pinezhsky reserve will be used to conduct a comprehensive monitoring of water quality and the biotic part of its ecosystem (phyto- and zooplankton, zoobenthos, ichthyofauna), including the inflow system.

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СAI, YING. "AMUR RIVER TRANSPORT IN INTERACTION OF THE AMUR REGION (RUSSIA) AND THE HEILONGJIANG PROVINCE (CHINA) IN THE 1990S." JOURNAL OF PUBLIC AND MUNICIPAL ADMINISTRATION 10, no. 2 (2021): 30–48. http://dx.doi.org/10.22394/2225-8272-2021-10-2-30-48.

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The purpose of the article is to analyze the significance of the Amur River transport activity in the 1990s for interregional Russian-Chinese cross-border coopera-tion in the Far East. Using the materials in Chinese as well as archival documents, the author examines the process of border ties resumption between Russia and China in the Far East after the normalization of rela-tions between the countries. The peculiarities of the river fleet functioning on the Amur during the period of socio-economic reforms of the last decade of the 20th century in Russia are studied. The characteristic of the Amur River transport potential is presented. The prob-lems of the Amur River transport in the development of cooperation between the Russian Amur Region and the Chinese province of Heilongjiang in the context of Rus-sian-Chinese relations at the interstate and interregion-al levels are structured.

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Dronin, G. "PLANTS FROM RED BOOK OF RUSSIA IN THE SYZRANKA RIVER BASIN (MIDDLE VOLGA REGION)." Bulletin of the Moscow State Regional University (Natural sciences), no. 5 (2015): 20–25. http://dx.doi.org/10.18384/2310-7189-2015-5-20-25.

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Astakhov, Maxim V., and Victor V. Bogatov. "Vertical redistribution of drifting benthic invertebrates in the Kedrovaya River, Primorsky Region of Russia." Open Journal of Ecology 04, no. 02 (2014): 53–59. http://dx.doi.org/10.4236/oje.2014.42007.

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Drozdenko, Tatyana Viktorovna, Sergey Gennadyevich Mikhalap, and Nina Vladimirovna Bugero. "Species structure and diversity of phytoplankton of the Velikaya River delta (Pskov region, Russia)." Principles of the Ecology 37, no. 3 (2020): 98–112. http://dx.doi.org/10.15393/j1.art.2020.7962.

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Kotkova, V. M. "Aphyllophoraceous fungi (Basidiomycota) in forest ecosystems of Setra River Basin (Arkhangelsk Region)." Novosti sistematiki nizshikh rastenii 48 (2014): 130–45. http://dx.doi.org/10.31111/nsnr/2014.48.130.

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The paper provides the first data on aphyllophoraceous fungi of the Verkhne-Vashkinskiy Natural Forest (Krasnoborsk District, Arkhangelsk Region). Among 197 species of fungi collected there, Aporpium macroporum, Cerinomyces crustulinus, Clavulinopsis laeticolor, Hydnum umbilicatum, Hymenochaete cruenta, Hyphoderma clavigerum, H. guttuliferum, Junghuhnia fimbriatella, Leucogyrophana sororia, Perenniporia narymica, Rhizochaete filamentosa, Tomentella galzinii, Tomentella terrestris, Trechispora byssinella, Vararia racemosa are new for the region. Steccherinum straminellum (Bres.) Melo is recorded for the first time for the European part of Russia. A total 4 localities of Ganoderma lucidum from Red Data Book of Russian Federation (Krasnaya…, 2008b) and 3 localities of Hericium coralloides from Red Data Book of Arkhangelsk Region (Krasnaya…, 2008a) were found.

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Wilmot, Richard L., Rebecca J. Everett, William J. Spearman, Ramone Baccus, Natalya V. Varnavskaya, and S. V. Putivkin. "Genetic Stock Structure of Western Alaska Chum Salmon and a Comparison with Russian Far East Stocks." Canadian Journal of Fisheries and Aquatic Sciences 51, S1 (1994): 84–94. http://dx.doi.org/10.1139/f94-297.

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Substantial genetic divergence was found among chum salmon (Oncorhynchus keta) populations collected from North America and Russia. Five major groups of populations can be identified by geographic region: (1) lower Yukon River summer run; (2) upper Yukon River fall run; (3) Bristol Bay area; (4) Alaska Peninsula; and (5) Russia. Mean heterozygosities were 0.064, 0.062, 0.065, 0.064, and 0.063, respectively; and the percent polymorphic loci values at the 0.99 level were 33.7, 31.3, 32.6, 30.6, and 30.9%, respectively. The hierarchical gene diversity analysis showed that 95.42% of the diversity can be explained by heterogeneity within sites, 1.36% among sites, 0.49% between Yukon River run timing, 1.69% among areas, and 1.04% among countries. The Alaska Peninsula populations are genetically more similar to populations from Russia than to those from western Alaska, and two populations from the upper Yukon River are distinct from other nearby populations. Possible reasons for these findings concern the complex glacial histories of the watersheds.

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Schletterer, M., L. Füreder, V. V. Kuzovlev, Y. N. Zhenikov, J. F. Fuentes-Perez, and J. A. Tuhtan. "CLASSIFICATION OF BENTHIC BIOCENOSES OF THE LOWLAND RIVER TUDOVKA (TVER REGION, RUSSIA) USING COMMUNITY FEATURES." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 10, no. 2 (2017): 40–56. http://dx.doi.org/10.24057/2071-9388-2017-10-2-40-56.

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Andronova, L. A., O. V. Bleikher, I. E. Rogaeva, E. V. Savkovich, and N. V. Trubnikova. "Interdisciplinary Model for Russia and China Transboundary Water Management in the Amur-Heilong River Region." Advanced Science Letters 22, no. 5 (2016): 1601–5. http://dx.doi.org/10.1166/asl.2016.6698.

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Naugolnykh, S. V. "Fossil flora from the Kazanian (Middle Permian) Iva-Gora locality, Soyana River, Arkhangelsk Region, Russia." Paleontological Journal 49, no. 11 (2015): 1193–205. http://dx.doi.org/10.1134/s0031030115110076.

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Fedorova, Alexandra, Olga Makarieva, Nataliia Nesterova, Andrey Shikhov, and Tatyana Vinogradova. "Modelling maximum discharge of the catastrophic flood at the Iya River (Irkutsk region, Russia) in 2019." E3S Web of Conferences 163 (2020): 01004. http://dx.doi.org/10.1051/e3sconf/202016301004.

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The aim of the study is to estimate the maximum discharge of the catastrophic flood in June 2019 at the Iya River (Irkutsk Region, Russia). The main cause of this flood was extreme precipitation (170 mm for 3 days). The distributed deterministic hydrological model Hydrograph was applied. The schematization of the Iya river basin, parametrization and verification of the Hydrograph model were performed. The median value of the Nash-Sutcliff criteria was 0.69 for the period 1970-1996 for three catchments of the Iya River basin. Based on the data of weather stations and global weather forecast model ICON, maximum daily discharge values of the flood were estimated as 6570 and 4780 m3s-1 respectively with the possible value range assessed by the dependence of Q(H) 6250-7500 m3s-1. The flood hydrograph estimated from weather station data coincides in magnitude of flood peak, but its formation is delayed by 1 day. ICON data underestimates maximum value but provides proper timing of the flood peak. The ensemble of input meteorological data from various sources could potentially be used to satisfactorily predict the magnitude and duration of the catastrophic flood and minimize the consequences of the flood.

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Zakrutkin, V. E., V. N. Reshetnyak, and O. S. Reshetnyak. "ASSESSMENT OF THE HEAVY METAL POLLUTION LEVEL OF THE RIVER SEDIMENTS IN THE EAST DONBASS (ROSTOV REGION, RUSSIA)." Water and Ecology 25, no. 3 (2020): 32–40. http://dx.doi.org/10.23968/2305-3488.2020.25.3.32-40.

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Introduction. River bottom sediments are a significant link in the biogeochemical cycles of water bodies and an accumulator of pollutants. The purpose of this study is to assess the level of heavy metal pollution of river sediments within the coal-mining areas of the East Donbass (Rostov Region, Russian Federation) to assess the potential risk for the population using surface water as a source of water supply. Methods. It is suggested to use the pelitic fraction for a more accurate assessment of the heavy metal pollution level of river sediments. It is proposed to use the average continental shale concentration as a baseline value for the pelitic fraction. Contamination factor (Cf), degree of contamination (Cd) and geo-accumulation index (Igeo) were used to assess the degree of heavy metal pollution of the bottom sediments in the East Donbass rivers. Results. Studies of the chemical composition and the level of bottom sediments pollution in the East Donbass rivers showed that the concentration values of heavy metals vary greatly. Assessing the degree of heavy metal pollution of the river sediments in the East Donbass allows us to classify them mainly as moderately contaminated (uncontaminated to moderately contaminated). At the same time, the level of river sediments pollution in the Seversky Donets basin is generally lower than that in the Tuzlov basin. Conclusion. The results will be used to improve the system for assessing water and bottom sediments quality in the region as well as evaluate the environmental risk to public health. Although the results showed a moderate level of heavy metal contamination of the East Donbass rivers sediments, the potential hazard of secondary pollution of the aquatic environment with metals deposited in sediments remains. Pollution of water and river bottom sediments is directly linked to the potential risk to public health because these rivers are used as sources of drinking water for towns and countryside.

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Schletterer, Martin, Leopold Füreder, Vyacheslav Viktorovich Kuzovlev, Kyrill Yuryevich Zhenikov, and Yuri Nikolayevich Zhenikov. "REFCOND-VOLGA: a monitoring programme for water quality in the headwaters of the Volga River (Tver region, Russia)." Revista Eletrônica de Gestão e Tecnologias Ambientais 4, no. 1 (2016): 18. http://dx.doi.org/10.9771/gesta.v4i1.16288.

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<p>Within the research expedition “Upper Volga 2005” an assessment of hydrological, limnochemical and biological parameters was carried out in the Volga River upstream of Tver, including the main channel as well as major tributaries. This assessment revealed that the headwaters of the Volga River represent conditions which are either reference or least disturbed and stipulated the establishment of the monitoring programme “REFCOND_VOLGA”, which is in operation since 2006 and includes stretches along the Volga River (Rzhev, Staritsa, Tver) as well as along the tributary Tudovka.</p>This paper summarizes the “first 10 years” of this joint Russia-Austrian research project, focusing on a sound description of the research area and providing a complementary view on the available data as well as a view ahead.

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Kasatkin, Anatoly V., Emil Makovicky, Jakub Plášil, et al. "Chukotkaite, AgPb7Sb5S15, a new sulfosalt mineral from Eastern Chukotka, Russia." Canadian Mineralogist 58, no. 5 (2020): 587–96. http://dx.doi.org/10.3749/canmin.2000036.

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ABSTRACT The new sulfosalt chukotkaite, ideally AgPb7Sb5S15, was discovered in the valley of the Levyi Vulvyveem river, Amguema river basin, Iultin District, Eastern Chukotka, Chukotka Autonomous Okrug, North-Eastern region, Russia. The new mineral forms anhedral grains up to 0.4 × 0.5 mm intergrown with pyrrhotite, sphalerite, galena, stannite, quartz, and Mn-Fe-bearing clinochlore. Other associated minerals include arsenopyrite, benavidesite, diaphorite, jamesonite, owyheeite, uchucchacuaite, cassiterite, and fluorapatite. Chukotkaite is lead-grey and has metallic luster and a grey streak. It is brittle and has an uneven fracture. Neither cleavage nor parting were observed. Mohs hardness is 2–2½. Dcalc. = 6.255 g/cm3. In reflected light, chukotkaite is white, moderately anisotropic with rotation tints varying from bluish-grey to brownish-grey. No pleochroism or internal reflections are observed. The chemical composition of chukotkaite is (wt.%; electron microprobe) Ag 3.83, Pb 53.67, Sb 24.30, S 18.46, total 100.26. The empirical formula based on the sum of all atoms = 28 pfu is Ag0.93Pb6.78Sb5.22S15.07. Chukotkaite is monoclinic, space group P21/c, a = 4.0575(3), b = 35.9502(11), c = 19.2215(19) Å, β = 90.525(8)°, V = 2803.7(4) Å3, and Z = 4. The strongest lines of the powder X-ray diffraction pattern [d, Å (I, %) (hkl)] are: 3.52 (100) (045), 3.38 (50) (055), 3.13 (50) (065), , 2.82 (25) (066), 1.91 (50) (0 1 10). The crystal structure of chukotkaite was refined from single-crystal X-ray diffraction data to R = 0.0712 for 3307 observed reflections with Iobs &gt; 3σ(I). Chukotkaite belongs to the group of rod-based sulfosalts. The new mineral is named after the region of its type locality: Chukotka Autonomous Okrug, North-Eastern Region, Russia.

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Zaitseva, G. I., A. M. Mikliaev, and A. N. Mazurkevich. "The Occupation History of the Region Between the Dvina and Lovat Rivers in Relation to the Dynamics of Environmental Change." Radiocarbon 37, no. 2 (1995): 251–57. http://dx.doi.org/10.1017/s003382220003071x.

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We show how 14C dating may be combined with palynological and paleogeographical research to correlate human occupation history with environmental change, focusing on archaeological sites in the Dvina–Lovat River region of Russia. Cultures in this region range from Early Neolithic to the Middle Ages, ca. 5500 bc–ad 100, based on calibrated 14C ages. The dynamics of water basins in the region, related to climatic change, are one cause of population migration.

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Podshivalina, V. N., and N. G. Sheveleva. "First record of Sinodiaptomus sarsi (Copepoda: Calanoida) from the East European Plain." Zoosystematica Rossica 29, no. 1 (2020): 60–69. http://dx.doi.org/10.31610/zsr/2020.29.1.60.

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The calanoid copepod species Sinodiaptomus sarsi (Rylov, 1923) is recorded from the East European Plain (the Sura River floodplain, Middle Volga Region, Russia) for the first time. A brief description and illustrations of the species are provided, and some differences between its European and Asian populations are revealed. The studied population of S. sarsi from the Sura River basin is mostly similar in morphological characters to populations from China and Japan.

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25

Bulokhov, A. D., and A. M. Petrenko. "Communities of the class Koelerio-Corynephoretea Klika in Klika et Novák 1941 in the Bryansk region of Russia." Vegetation of Russia, no. 30 (2017): 29–34. http://dx.doi.org/10.31111/vegrus/2017.30.29.

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Only few publications on the classification of vegetation of Koelerio–Corynephoretea canescentis Klika in Klika et Novák1941 class, that unites pioneer communities on sandy soils, dunes or an exposed sands, is known for Bryansk region of Russia (Bulokhov, 2001; Bulokhov, Kharin, 2008). This region is located in the western part of the East European plain, on the watershed of two large river (Dnieper and Volga) systems, occupying the central part of the Desna river pool and the woody watershed between Desna and Oka. The territory (34.9 thousand кm2) is extended from the west to the east on 270 km (between 31°10′ and 35°20′ E) and from the north to the south — on 190 km (between 54°05′ and 52°10′ N). The main item of this paper is to submit the results of the classification carried out upon thebasis of 57 releves made in 2003–2016 in Bryansk region and to characterize the composition, distribution and syntaxonomical position of thepioneer vegetation of sandy and shallow soils communities within it. Three new associations are described according to Braun-Blanquet floristic classification. The syntaxon nomenclature of the higher ranks follows Mucina et al. (2016) The ass. Thymo serpylli–Koelerietum glaucae ass. nov. hoc loco, with synecological optimum on dry poor sandy soils, is diagnosed by character species Artemisia campestris, Koeleria glauca, Thymus serpyllum. Its communities occur on fringes of the lichen pine forests, sandy river terraces and outwash plains. Two subassociations are distinguished within the association: T. s.–K. g. typicum (with var. typica and Corynephorus canescens) and agrostietosum vinealis subass. nov. hoc loco (with var. typica and Calluna vulgaris) with Agrostis vinealis, Dianthus arenarius, Cladonia arbuscula as differential species. The ass. Koelerio glaucae–Plantaginetum arenariae ass. nov. hoc loco, with synecological optimum on dry poor sandy soils or exposed sands, is diagnosed by Plantago arenaria and Koeleria glauca. Its communities occuron the exposed sands, fringes of lichen pine forests and not flooded sandy river crests. The ass. Diantho borbasii–Festucetum polesicae ass. nov. hoc loco with synecological optimum on dry, weekly acidic, poor of mineral nitrogen, sandy soils or the exposed sands, is diagnosed by Festuca polesica, Astragalus arenarius, Jurinea cyanoides, Otites parviflora. Communities occur on the exposed sands, fringes of lichen pine forests. Two variants are distinguished within association: Sempervivum ruthenicum (on dunes with dry, poor, weekly developed soils) and typica. These three associations are the early stages of the progressive succession of oligotrophic lichen pine forests on the river terraces or of the heath meadows in flood river plains.

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Marusik, Yuri M., and Anna A. Nekhaeva. "New data on spiders (Arachnida, Aranei) of Kamchatka, Russia." Acta Biologica Sibirica 6 (December 22, 2020): 649–68. http://dx.doi.org/10.3897/abs.6.e60005.

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Since 1885 and for almost a century the Kamchatka Peninsula had been a region of Russia east of the Urals with the best studied spider fauna. Currently, Kamchatka can be considered the least studied Siberian region. In this paper, we have provided a brief overview of Tatyana V. Pavlenko's spider collection compiled in Kamchatka in 1988-1992. A species list contains 108 species belonging to 15 families, of which 25 species, five genera and the family Titanoecidae are new to the spider fauna of Kamchatka. Walckenaeria subspiralis Millidge, 1983 is recorded from the Palaearctic Region for the first time. Kolymocyba petrophila Eskov, 1989 previously known from Magadan Area only is illustrated to provide more detail data about its morphology. The female of Micaria yeniseica Marusik &amp; Koponen, 2002 that was previously known from the holotype male from the middle reaches of Yenisei River only is described for the first time. Two species – M. yeniseica and Zelotes azsheganovae Esyunin &amp; Efimik, 1992 – significantly extended their known range to the east. Based on new data, a total number of the spider species known from Kamchatka has extended to 273.

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Rasskazov, Igor, Viktor Kryukov, and Marina Potapchuk. "Structural and geomechanical models of gold deposits in the Amur region (Russia)." E3S Web of Conferences 192 (2020): 01001. http://dx.doi.org/10.1051/e3sconf/202019201001.

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A large number of gold deposits are concentrated in the Russian part of the Amur river basin. Gold units are characterized by various formation conditions, and, due to this, by a variety of structural factors, as well as stability of rock masses. Structural features, qualities and properties of ore-bearing rocks determine the specifics of choosing mining systems for the units. Geological and geomechanical data obtained in the course of exploration and exploitation of objects allowed us to identify groups of deposits with similar genetic conditions and form common features of their development through the development of appropriate models. There are five major groups of gold deposits. They are represented by deposits formed in epiplatform conditions of young volcanism, in intrusive-tectonic and intrusive-dome structures of Cretaceous age, in metamorphic domes, as well as in tectonic wedges. The selected groups of deposits are localized in masses with different rock stability. In accordance with these features, we developed structural and geomechanical models of gold deposits in the Amur region. The models are used for correcting the methodology of studying deposits and justifying rational methods of their development.

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Sudakova, E. A., I. N. Egorova, E. N. Maksimova, and E. M. Vysokikh. "To the flora of the soil algae of the northern territories of Baikal region: Baikal-Patom and Stanovoi uplands (Russia)." Проблемы ботаники Южной Сибири и Монголии 19, no. 1 (2020): 179–84. http://dx.doi.org/10.14258/pbssm.2020036.

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A list of soil algae of Bodaibo river basin (Irkutsk region) and Chara river basin (Transbaikal region) ispublished for the first time. The research was carried out in the area of industrial gold mining in the vicinity of the Bodaibo city (Baikal-Patom upland) and the developed territories in the zone of the Baikal-Amur mainline in the vicinity of theChara village (Stanovoye upland). The research covers natural and anthropogenic disturbed phytocenoses. 150 speciesand intraspecific taxa of algae from the divisions Cyanoprokaryota, Euglenozoa, Bacillariophyta, Ochrophyta, Chlorophyta and Streptophyta were identified. In the soils of the Bodaibo vicinity were found 142 taxa, 34 species of algae werefound in the Chara vicinity.

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Dubynin, Alexander, Inessa Selyutina, Alexandra Egorova, and Mikhail Blinnikov. "An orchid (Orchidaceae)-rich area recommended for preservation in Novosibirsk Region, Russia." Acta Biologica Sibirica 7 (April 7, 2021): 21–38. http://dx.doi.org/10.3897/abs.7.e63131.

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The spatial distribution of 14 species of the orchid family (Orchidaceae) was studied at the left bank of the Koynikha River (Iskitimskiy District, Novosibirsk Region, Russia). Four species are listed in the Russian Federation Red Data Book, four are listed in the Novosibirsk Region Red Data Book. The number of individual plants is sufficient to ensure the long-term viability of each red-listed orchid population. What is apparently one of the largest populations of Cypripedium macranthos in the region is described (up to 5,000 individuals). Some of the orchids discovered require further study, namely interspecific hybrids of Dactylorhiza and Gymnadenia and distinctive floral developmental morphs of Platanthera. &#1040;pplying the international criteria for allocation of an &ldquo;Important Plant Area&rdquo;, we nominate a new one for South Siberia. Based on the analysis of plant species composition of protected areas in Novosibirsk Region, we conclude that in situ preservation of orchids in the region is overall insufficient. It is therefore necessary to organize a new protected area &ldquo;Orchid Zapovednik&rdquo; in the category of &ldquo;botanical Zakaznik&rdquo; on 335 hectares with an explicit floral diversity conservation mandate and long-term orchid population monitoring.

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30

Urbanavichene, I. N., and G. P. Urbanavichus. "Contributions to the lichen flora of the Kologriv Forest Nature Reserve (Kostroma Region)." Novosti sistematiki nizshikh rastenii 54, no. 1 (2020): 127–38. http://dx.doi.org/10.31111/nsnr/2020.54.1.127.

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New data on the lichen flora of the Kologriv Forest Nature Reserve from the cluster Kologrivskiy are provided. The specimens of lichens, lichenicolous fungi and non-lichenized saprophytic fungi were collected from 9 localities mainly in the Sekha River valley in cluster Kologrivskiy in September 2018. Altogether 110 lichen species, 9 non-lichenized saprobic fungi and 2 lichenicolous fungi are recorded for the first time for the nature reserve, including 69 species and 21 genera new for the Kostroma Region. The genus Leptosillia with species L. wienkampii and lichenicolous fungus Opegrapha phaeophysciae are published for the first time for European Russia. Altogether over 20 indicator species and habitat specialists of biologically valuable forests are known from the study area. Moreover 4 species (Leptogium burnetiae, Lobaria pulmonaria, Menegazzia terebrata, Nephromopsis laureri) are included in the Red Data Book of Russia.

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31

Shishlina, N. I., J. van der Plicht, and M. A. Turetsky. "The Lebyazhinka Burial Ground (Middle Volga Region, Russia): New 14C Dates and the Reservoir Effect." Radiocarbon 60, no. 2 (2017): 681–90. http://dx.doi.org/10.1017/rdc.2017.94.

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AbstractWe report new accelerator mass spectrometry radiocarbon (AMS 14C) dates of bones from humans, animals, and fish from grave 12 of the Lebyazhinka V Eneolithic burial ground in the middle Volga River region, Russia. Earlier conventional dates established a chronology. This has to be adjusted by new insights: the date has to be corrected for reservoir effects. For this purpose we redated bone from a human, and for herbivore and freshwater fauna from the same context, and included measurements of the stable isotopes δ13C and δ15N. The reservoir offset for the human appears to be about 700 14C yr.

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32

Iijima, Yoshihiro, Alexander N. Fedorov, Hotaek Park, et al. "Abrupt increases in soil temperatures following increased precipitation in a permafrost region, central Lena River basin, Russia." Permafrost and Periglacial Processes 21, no. 1 (2009): 30–41. http://dx.doi.org/10.1002/ppp.662.

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33

Simakova, Anastasia V., Nakul Chitnis, Irina B. Babkina, et al. "Abundance of Opisthorchis felineus Metacercariae in cyprinid fish in the middle Ob River basin (Tomsk region, Russia)." Food and Waterborne Parasitology 22 (March 2021): e00113. http://dx.doi.org/10.1016/j.fawpar.2021.e00113.

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34

CHUDAEV, DMITRY, INGRID JÜTTNER, and ZLATKO LEVKOV. "The genus Navicula (Bacillariophyceae, Naviculaceae) from the valley of the Adegoy River (Krasnodar Territory, Russia) and description of two new species." Phytotaxa 494, no. 2 (2021): 208–18. http://dx.doi.org/10.11646/phytotaxa.494.2.3.

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This is the first detailed taxonomic study of the genus Navicula in the Krasnodar Territory of the Caucasus region, Russia. During the study of the genus in waterbodies of the Adegoy River valley 15 taxa were recorded. Two species, N. adegoyensis sp. nov. and N. pseudocryptofallax sp. nov., are described as new to science. Their morphology is studied by light and scanning electron microscopy, and comparisons with morphologically similar species are provided. The use of the name N. avenacea for N. lanceolata sensu auct. is discussed. Navicula diversity was higher in the Adegoy River than in pools elsewhere in the river valley.

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35

Kraberg, A. C., E. Druzhkova, B. Heim, M. J. G. Loeder, and K. H. Wiltshire. "Phytoplankton community structure in the Lena Delta (Siberia, Russia) in relation to hydrography." Biogeosciences 10, no. 11 (2013): 7263–77. http://dx.doi.org/10.5194/bg-10-7263-2013.

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Abstract. The Lena Delta in Northern Siberia is one of the largest river deltas in the world. During peak discharge, after the ice melt in spring, it delivers between 60–8000 m3 s−1 of water and sediment into the Arctic Ocean. The Lena Delta and the Laptev Sea coast also constitute a continuous permafrost region. Ongoing climate change, which is particularly pronounced in the Arctic, is leading to increased rates of permafrost thaw. This has already profoundly altered the discharge rates of the Lena River. But the chemistry of the river waters which are discharged into the coastal Laptev Sea have also been hypothesized to undergo considerable compositional changes, e.g. by increasing concentrations of inorganic nutrients such as dissolved organic carbon (DOC) and methane. These physical and chemical changes will also affect the composition of the phytoplankton communities. However, before potential consequences of climate change for coastal arctic phytoplankton communities can be judged, the inherent status of the diversity and food web interactions within the delta have to be established. In 2010, as part of the AWI Lena Delta programme, the phyto- and microzooplankton community in three river channels of the delta (Trofimov, Bykov and Olenek) as well as four coastal transects were investigated to capture the typical river phytoplankton communities and the transitional zone of brackish/marine conditions. Most CTD profiles from 23 coastal stations showed very strong stratification. The only exception to this was a small, shallow and mixed area running from the outflow of Bykov channel in a northerly direction parallel to the shore. Of the five stations in this area, three had a salinity of close to zero. Two further stations had salinities of around 2 and 5 throughout the water column. In the remaining transects, on the other hand, salinities varied between 5 and 30 with depth. Phytoplankton counts from the outflow from the Lena were dominated by diatoms (Aulacoseira species) cyanobacteria (Aphanizomenon, Pseudanabaena) and chlorophytes. In contrast, in the stratified stations the plankton was mostly dominated by dinoflagellates, ciliates and nanoflagellates, with only an insignificant diatom component from the genera Chaetoceros and Thalassiosira (brackish as opposed to freshwater species). Ciliate abundance was significantly coupled with the abundance of total flagellates. A pronounced partitioning in the phytoplankton community was also discernible with depth, with a different community composition and abundance above and below the thermocline in the stratified sites. This work is a first analysis of the phytoplankton community structure in the region where Lena River discharge enters the Laptev Sea.

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36

Kraberg, A. C., E. Druzhkova, B. Heim, M. J. G. Loeder, and K. H. Wiltshire. "Phytoplankton community structure in the Lena Delta (Siberia, Russia) in relation to hydrography." Biogeosciences Discussions 10, no. 2 (2013): 2305–44. http://dx.doi.org/10.5194/bgd-10-2305-2013.

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Abstract. The Lena Delta in Northern Siberia is one of the largest river deltas in the world. During peak discharge, after the ice melt in spring, it delivers between 60–8000 m3s−1 of water and sediment into the Arctic Ocean. The Lena Delta and the Laptev Sea coast also constitute a~continuous permafrost region. Ongoing climate change, which is particularly pronounced in the Arctic, is leading to increased rates of permafrost thaw. This is likely to profoundly change the discharge rates of the Lena River and the chemistry of the river waters which are discharged into the coastal Laptev Sea, e.g. by increasing concentrations of inorganic nutrients, DOC and importantly methane. These physical and chemical changes will also affect the composition of and interactions between phytoplankton and zooplankton communities, forming the basis of the food web. However, before potential consequences of climate change for coastal arctic plankton communities can be judged, the inherent status of the diversity and linked foodweb interactions within the delta need to be established. As part of the AWI Lena Delta Programme in 2010 the phyto- and microzooplankton community in three river channels as well as four coastal transects were investigated to capture the typical river phytoplankton communities and the transitional zone of brackish/marine conditions. Most CTD profiles from 23 coastal stations showed very strong stratification. The only exception to this was a small a shallow and mixed area running from the outflow of Bykovskaya channel in a northerly direction parallel to the shore (transect 3). Of the five stations in this area three had a salinity of close to zero. Two further stations had salinities of around 2 and 5 throughout the water column. In the remaining transects on the other hand salinities varied between 5–30 with depth. Phytoplankton counts from the outflow from the Lena were dominated by diatoms (Aulacoseira species) cyanobacteria (Aphanizomenon, Pseudanabaena) and chlorophytes, in those stations characterized by river outflow (stations in the Lena itself and in coastal transect 3). In contrast in the stratified stations the plankton was mostly dominated by dinoflagellates, ciliates and nanoflagellates, with only an insignificant diatom component from the genera Chaetoceros and Thalassiosira (brackish as opposed to freshwater species). Ciliate abundance was significantly coupled with the abundance of total flagellates. A pronounced partitioning in the phytoplankton community was also discernible with depth, with a different community composition and abundance above and below the thermocline in the stratified sites. This work represents the first attempt at analyzing the phytoplankton structure of the region of freshwater influence at confluence Lena–Laptev sea.

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37

Zavialov, P. O., O. О. Moller Jr., and X. H. Wang. "Relations between marine plastic litter and river plumes: First results of PLUMPLAS project." Journal of Oceanological Research 48, no. 4 (2020): 32–44. http://dx.doi.org/10.29006/1564-2291.jor-2020.48(4).2.

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We report here first and preliminary results of the PLUMPLAS Project – an ongoing international joint research effort between Federal University of Rio Grande (Brazil), Xiamen University (China), and P.P. Shirshov Institute of Oceanology (Russia) developed within science and technology cooperation initiative (STI) between BRICS countries. The studies are focused on specific model regions representing different conditions of river discharges and anthropogenic loads, namely, the areas adjacent to the Kerch Strait in the Black Sea (Russia); the region of the Patos Lagoon mouth in the South Atlantic (Brazil); and Jiulong river estuary in Xiamen (China). The working hypothesis being tested is as follows: the floating plastic litter in the coastal ocean is mainly concentrated in the river plumes associated with continental freshwater discharges, and its dynamics is largely controlled by the dynamics of the plumes. The preliminary results of in situ observations and modeling accomplished to date seem to be in line with this hypothesis.

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38

Potapov, GS, and YuS Kolosova. "Local fauna of bumblebees (Hymenoptera, Apidae) in the lower reaches of the Northern Dvina River." Arctic Environmental Research 19, no. 2 (2019): 49–55. http://dx.doi.org/10.3897/issn2541-8416.2019.19.2.49.

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This article is devoted to an investigation of the local fauna of bumblebees in the lower reaches of the Northern Dvina River in northern Russia where 27 species of bumblebees were found during the present study. The basis of the local fauna of bumblebees in the lower reaches of the Northern Dvina River is related to species with a wide range. The majority of the species are Transpalaearctic. Holarctic, Sub-Transpalaearctic, whereas West-Central Palaearctic are less represented. According to the latitudinal aspect the majority of the species are temperate, and the rest are boreal and arcto-temperate. One of species found in the local fauna is subboreal. The number of species in the studied local fauna is the largest among the local faunae of the northern part of the Arkhangelsk Region. It is comparable to the local faunae of the southern part of this region. Here is recorded species such asBombussoroeensis,B.distinguedus,B.ruderarius,B.veteranus,B.humilis, and others, which are not typical of native taiga habitats but are the meadow species in the European North of Russia. Due to the wide development of meadows and ruderal communities in the lower reaches of the Northern Dvina River, these species are widely represented here. The rare species in the studied local fauna areB.patagiatus,B.humilis,B.consobrinus, andB.schrencki.

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39

Zakharov, Alexander Borisovich, and Eduard Ivanovich Boznak. "ASSESSMENT OF TROUT NATURALIZATION IN WATER BODIES IN NORTH-EASTERN EUROPEAN RUSSIA (CASE OF VYCHEGDA RIVER TRIBUTARIES)." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2021, no. 3 (2021): 17–27. http://dx.doi.org/10.24143/2073-5529-2021-3-17-27.

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The article highlights the ichthyological studies carried out in the Sysola river basin (a second order tributary of the Severnaya Dvina river), where rainbow trout is reared in cages for commercial purposes in the waters of regulated tributaries. The forecast for trout naturalization seems to be poor due to the fact that trout of different ages enter the river system every year as a result of technological accidents. It has been found that, despite the numerous cases of trout occurring in the natural conditions during 40 years, in the basin of the Sysola river has not formed a self-reproducing population of rainbow trout, and cases of its by-catch are rare. The data on the climatic and ecological conditions of the region are given. It has been inferred that the main factors preventing the naturalization of trout in the water bodies of the region are unfavorable temperature and hydrological regimes during the spawning and early ontogenesis of fish. The short summer feeding period does not allow trout to prepare for successful long wintering, as evidenced by a sharp decrease in the growth rate of fish that have fallen into natural conditions, compared to fish grown in cages. Trout of cage origin obviously do not form stable groups capable of reproducing the species and do not pose a threat to the aboriginal fish population, including Atlantic salmon, whose spawning and a significant part of the life cycle take place on many rivers of the north-eastern European Russia, including the basins of the Severnaya Dvina and Pechora rivers

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40

Reshetnyak, O. S. "Assessment of the Level of Environmental Risk in River Ecosystems of the Arctic Zone of Russia." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 3 (207) (October 2, 2020): 69–78. http://dx.doi.org/10.18522/1026-2237-2020-3-69-78.

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The methodological approaches and the results of assessing the environmental risk level in river ecosystems of the Arctic region of Russia was presented. Assessing of the environmental risk level in ecosystem includes identifying possible negative consequences of anthropogenic impact, which are appeared in a violation of the structural organization of biocenoses. An intensification of the ecological devolution of individual communities of aquatic organisms is observed in modern conditions of anthropogenic impact and climatic variations in the Arctic ecosystems of rivers. The tendency to increase the ecological devolution level as the anthropogenic impact intensifies during the transition from less polluted Arctic rivers to more polluted ones (dirty) has been revealed. The ecological devolution level varies from absence (anthropogenic stress) to its appearance in the form of elements of ecological devolution. The results of the final assessment of the environmental risk level in the ecosystems of the Arctic region of Russia according to the ecological devolution level showed that the studied sections of the rivers are characterized by a low and medium level of risk. Further enhancement of anthropogenic impact on the catchments of Arctic rivers can lead to disruption of the ecological state of aquatic ecosystems and intensification of ecological devolutions processes which may increase the level of environmental risk.

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41

ZORINA, OKSA V. "New species and records of Beckidia Sæther (Diptera: Chironomidae) from the Russian Far East." Zootaxa 1151, no. 1 (2006): 47. http://dx.doi.org/10.11646/zootaxa.1151.1.4.

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Two new species of Beckidia Sæther, B. biraensis and B. connexa, from the Amur River Basin are described and figured as males. The male of B. tethys (Townes) is redescribed and figured and the species is recorded for the first time from Russia. The generic diagnosis is emended and a key to the males of Beckidia from the Holarctic Region is given.

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42

Strelnikova, Nina I., and Ekaterina N. Nikitina. "Some Cretaceous and Paleogene Trinacria, Medlinia, Sheshukovia species from Russia (Volga river region, Western Siberia), Kazakhstan and Ukraine." Nova Hedwigia, Beihefte 147 (October 4, 2018): 193–228. http://dx.doi.org/10.1127/nova-suppl/2018/017.

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43

Toro, Jaime, Jeffrey M. Amato, and Boris Natal'in. "Cretaceous deformation, Chegitun River area, Chukotka Peninsula, Russia: Implications for the tectonic evolution of the Bering Strait region." Tectonics 22, no. 3 (2003): n/a. http://dx.doi.org/10.1029/2001tc001333.

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44

VRŠANSKÝ, PETER, ĽUBOMÍR VIDLIČKA, PETER BARNA, EUGENIA BUGDAEVA, and VALENTINA MARKEVICH. "Paleocene origin of the cockroach families Blaberidae and Corydiidae: Evidence from Amur River region of Russia." Zootaxa 3635, no. 2 (2013): 117–26. http://dx.doi.org/10.11646/zootaxa.3635.2.2.

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Morphna paleo sp. n., the earliest winged representative of any living cockroach genus and the earliest representative of the family Blaberidae, is described from the Danian Arkhara-Boguchan coal mine in the Amur River region (Russian Far East). The branched Sc and A suggest Ectobiidae (=Blattellidae) probably is not the ancestral family because Blaberidae were derived directly from the extinct family Mesoblattindae. The associated Danian locality Belaya Gora yielded Ergaula stonebut sp. n., the earliest record of the family Corydiidae. Both species belong to genera codominant in the Messel locality, thus validating their dominance in early Cenozoic assemblages.

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45

Golovatyuk, Larisa V., Tatiana D. Zinchenko, and Larisa B. Nazarova. "Macrozoobenthic communities of the saline Bolshaya Samoroda River (Lower Volga region, Russia): species composition, density, biomass and production." Aquatic Ecology 54, no. 1 (2019): 57–74. http://dx.doi.org/10.1007/s10452-019-09726-z.

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46

Macey, J. Robert, Natalia B. Ananjeva, Yuezhao Wang, and Theodore J. Papenfuss. "A Taxonomic Reevaluation of the Gekkonid Lizard Genus Teratoscincus in China." Russian Journal of Herpetology 4, no. 1 (2011): 8–16. http://dx.doi.org/10.30906/1026-2296-1997-4-1-8-16.

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New collections of Teratoscincus from China and reexamination of type specimens in the Zoological Institute, St. Petersburg, Russia, reveal that T. roborowskii Bedriaga, «1905» (1906), is a valid species. The type locality given by Bedriaga is in error and is here corrected to the Turpan Depression, Xinjiang Uygur Autonomous Region, China where the species is endemic. Two additional species inhabit China, T. przewalskii (in the Taklimakan Desert, Hami Depression, Junggar Depression, and part of the Gobi Desert of Xinjiang Uygur Autonomous Region and adjacent provinces) and T. scincus (in the Ili River Valley of extreme western Xinjiang Uygur Autonomous Region).

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47

Kharitonov, Grigory. "Problems of introducing a system of paid water use in irrigated agriculture in water-deficient regions of Russia (on the example of the Rostov region)." E3S Web of Conferences 273 (2021): 05014. http://dx.doi.org/10.1051/e3sconf/202127305014.

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In the face of climate change, regulation of water use is essential. On the example of the Rostov region, the necessity of introducing paid water for agricultural lands was considered. Rostov region is one of the largest producers of agricultural products, including wheat and sunflower. At the same time, this territory belongs to arid territories and needs irrigation of agricultural land. The Lower Don basin on the territory of the Rostov region includes the territory from the Tsimlyansk reservoir to the river mouth. The quality of water resources and river runoff of large waterways in the Don region is largely determined by small rivers, whose environmental problems are also associated with a high anthropogenic load, indicating intense economic activity. The article discusses the possibilities of using the system of payment for water use for agriculture. It is shown that the introduction of a system of tariffs for irrigation water, as well as the modernization of existing legal norms, will reduce the anthropogenic load on the ecosystem. The systemic regulation of water use should ultimately lead to the modernization of the system of irrigation canals and the cleaning of small rivers in the region.

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48

Tsybryi, Andrey, Viktor Tsybryi, Ekaterina Dolbunova, Andrey Mazurkevich, and Marianna Kulkova. "Radiocarbon chronology of Neolithic in the Lower Don and North-eastern Azov Sea." Documenta Praehistorica 44 (January 4, 2018): 204. http://dx.doi.org/10.4312/dp.13.

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Abstract:

So far, four different cultural-chronological groups of sites have been identified in the North-eastern Azov Sea and Lower Don River areas, including sites of the Rakushechny Yar culture, Matveev Kurgan culture, Donets culture, and sites of the Caspian-Ciscaucasian region. An analysis of all known dates, as well as the contexts and stratigraphies of the sites, allowed us to form a new perspective of the chronology of southern Russia, to revise the chronology of this region, and change the concept of unreliability of dates for this area.

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49

Tsybryi, Andrey, Viktor Tsybryi, Ekaterina Dolbunova, Andrey Mazurkevich, and Marianna Kulkova. "Radiocarbon chronology of Neolithic in the Lower Don and North-eastern Azov Sea." Documenta Praehistorica 44 (January 4, 2018): 204–23. http://dx.doi.org/10.4312/dp.44.13.

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Abstract:

So far, four different cultural-chronological groups of sites have been identified in the North-eastern Azov Sea and Lower Don River areas, including sites of the Rakushechny Yar culture, Matveev Kurgan culture, Donets culture, and sites of the Caspian-Ciscaucasian region. An analysis of all known dates, as well as the contexts and stratigraphies of the sites, allowed us to form a new perspective of the chronology of southern Russia, to revise the chronology of this region, and change the concept of unreliability of dates for this area.

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50

Gusarov, Artyom V. "Land-Use/-Cover Changes and Their Effect on Soil Erosion and River Suspended Sediment Load in Different Landscape Zones of European Russia during 1970–2017." Water 13, no. 12 (2021): 1631. http://dx.doi.org/10.3390/w13121631.

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Abstract:

Contemporary trends in cultivated land and their influence on soil/gully erosion and river suspended sediment load were analyzed by various landscape zones within the most populated and agriculturally developed part of European Russia, covering 2,222,390 km2. Based on official statistics from the Russian Federation and the former Soviet Union, this study showed that after the collapse of the Soviet Union in 1991, there was a steady downward trend in cultivated land throughout the study region. From 1970–1987 to 2005–2017, the region lost about 39% of its croplands. Moreover, the most significant relative reduction in cultivated land was noted in the forest zone (south taiga, mixed and broadleaf forests) and the dry steppes and the semi-desert of the Caspian Lowland—about 53% and 65%, respectively. These territories are with climatically risky agriculture and less fertile soils. There was also a widespread reduction in agricultural machinery on croplands and livestock on pastures of the region. A decrease in soil/gully erosion rates over the past decades was also revealed based on state hydrological monitoring data on river suspended sediment load as one of the indicators of the temporal variability of erosion intensity in river basins and the published results of some field research in various parts of the studied landscape zones. The most significant reduction in the intensity of erosion and the load of river suspended sediment was found in European Russia’s forest-steppe zone. This was presumably due to a favorable combination of the above changes in land cover/use and climate change.

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Journal articles on the topic 'Selemdzha River Region (Russia)'

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