Geoecological investigations of the Ob-Irtysh River Basin in the Khanty-Mansi Autonomous region: Yugra in 2006–2007

2009 ◽  
Vol 47 (7) ◽  
pp. 657-671 ◽  
Author(s):  
O. V. Stepanets ◽  
A. N. Ligaev ◽  
A. P. Borisov ◽  
A. V. Travkina ◽  
V. M. Shkinev ◽  
...  
Keyword(s):  
River Basin ◽  
Autonomous Region ◽  
Irtysh River ◽  
Khanty Mansi Autonomous

scholarly journals Rare species of freshwater mollusks of the Bolshoy Yugan River basin (Middle Ob) in collection of 2016

2018 ◽  
Vol 9 (1) ◽  
pp. 62-71
Author(s):  
Evgeniy S. Babushkin
Keyword(s):  
River Basin ◽  
Russian Federation ◽  
Rare Species ◽  
Scientific School ◽  
Material Base ◽  
Autonomous Region ◽  
Field Season ◽  
Freshwater Mollusks ◽  
Khanty Mansi Autonomous ◽  
Family Groups

Information about rare species used for decide widely spectrum of problems. In practice ‒ for estimating environmental impact from human activities. For example by studying biodiversity in fundamental science. This information very important for monitoring and prevention of species extinction. Regional and Federal Red Books serve this aim. However freshwater mollusks species of the Bolshoy Yugan river basin not presented in the Federal Red Book of Russian Federation. In addition, in the Regional Red Books of Khanty-Mansi autonomous region and Tyumen region data about mollusks are absence. This paper the first step to fill in the gap. Article contains the first data about rare species of freshwater mollusks of the Bolshoy Yugan River basin collected during the field season of 2016. In future, these species possibly will be propose to inclusion in the Red Book of Khanty-Mansi autonomous region. I followed the standard techniques of mollusks sampling, fixation and laboratory treatment. In this research I call species rare if species occurrence was 5,0% and lower. I used contemporary macrosystems of mollusks in the level above family groups of both Bivalves and Gastropods. In addition, on the level under family groups and lower I used alternative approach, which consist of combination of two different taxonomic systems: “traditional” European and Ya.I. Starobogatov’s scientific school or “Russian”. The collection of mollusks is kept in the Federal Zapovednik (Nature Reserve) “Yuganskiy”, which was the material base of my study. In the article discussed aspects of rareness and difficulty of investigates freshwater mollusks. These difficulties connected with existence of different taxonomical approaches and underexplored mollusk's fauna and ecology. Studies of rare species in the Western Siberia are briefly considered. The results of own research and annotated list of rare mollusks species of Bolshoy Yugan River basin collected during the field season of 2016 are presented. Showed that significant part of species richness in the Bolshoy Yugan River basin consist of rare species. These results do not change independent of applied taxonomical approaches “traditional” or “Russian” and discussed with facts in malacologycal literature. There are 50 species of freshwater mollusks were find in 2016, 41 of them are rare in the Bolshoy Yugan River basin. In conclusion marked need for further research of freshwater mollusks. In addition denoted some important priorities of studies, such as systematics, fauna, zoogeography and ecology of mollusks. The question about inclusion in the Red Book of Khanty-Mansi autonomous region some any species of freshwater mollusks are still opened. Because needed additional facts about distribution and abundance species from others parts of region.Partial financial support for this study was obtained from the Ministry of Education and Science of Russian Federation (project 6.1352.2017/ПЧ).

scholarly journals Modeling Snow Depth and Snow Water Equivalent Distribution and Variation Characteristics in the Irtysh River Basin, China

2021 ◽  
Vol 11 (18) ◽  
pp. 8365
Author(s):  
Liming Gao ◽  
Lele Zhang ◽  
Yongping Shen ◽  
Yaonan Zhang ◽  
Minghao Ai ◽  
...  
Keyword(s):  
Snow Cover ◽  
River Basin ◽  
Snow Depth ◽  
Snow Water Equivalent ◽  
Snow Accumulation ◽  
Implicit Scheme ◽  
Snow Water ◽  
Irtysh River ◽  
Simulation Results ◽  
The Irtysh River

Accurate simulation of snow cover process is of great significance to the study of climate change and the water cycle. In our study, the China Meteorological Forcing Dataset (CMFD) and ERA-Interim were used as driving data to simulate the dynamic changes in snow depth and snow water equivalent (SWE) in the Irtysh River Basin from 2000 to 2018 using the Noah-MP land surface model, and the simulation results were compared with the gridded dataset of snow depth at Chinese meteorological stations (GDSD), the long-term series of daily snow depth dataset in China (LSD), and China’s daily snow depth and snow water equivalent products (CSS). Before the simulation, we compared the combinations of four parameterizations schemes of Noah-MP model at the Kuwei site. The results show that the rainfall and snowfall (SNF) scheme mainly affects the snow accumulation process, while the surface layer drag coefficient (SFC), snow/soil temperature time (STC), and snow surface albedo (ALB) schemes mainly affect the melting process. The effect of STC on the simulation results was much higher than the other three schemes; when STC uses a fully implicit scheme, the error of simulated snow depth and snow water equivalent is much greater than that of a semi-implicit scheme. At the basin scale, the accuracy of snow depth modeled by using CMFD and ERA-Interim is higher than LSD and CSS snow depth based on microwave remote sensing. In years with high snow cover, LSD and CSS snow depth data are seriously underestimated. According to the results of model simulation, it is concluded that the snow depth and snow water equivalent in the north of the basin are higher than those in the south. The average snow depth, snow water equivalent, snow days, and the start time of snow accumulation (STSA) in the basin did not change significantly during the study period, but the end time of snow melting was significantly advanced.

scholarly journals Colonisation models of remote taiga areas by Russian fur hunters and fishermen of the Middle and Lower Irtysh River region in the 20th century

2020 ◽  
pp. 199-206
Author(s):  
V.N. Adaev
Keyword(s):  
River Basin ◽  
Land Tenure ◽  
Well Being ◽  
Economic Benefits ◽  
Government Control ◽  
Local Conditions ◽  
Main Research ◽  
River Region ◽  
Irtysh River ◽  
Hunting And Fishing

The Russian colonists, inhabiting southern and mid-taiga regions of Western Siberia since the 17th c., al-ways relied heavily on hunter-gathering in their subsistence. The reasons for this were the obvious difficulties of northern agriculture and the economic benefits that hunting, fishing and gathering brought, including their signifi-cant commercial value. The active development of the commercial harvesting among the Russian Siberians al-ready in the 19th c. was hampered by the inaccessibility of many valuable hunting and fishing areas – first of all, remote taiga territories, which were in patrimonial land tenure of the indigenous inhabitants. The process of set-tlers' penetration into such territories, which unfolded in the 20th c., still has not been considered in detail in his-torical and ethnographic literature. The paper discusses the free colonization of the Demyanka River basin (Uvat-sky District of the Tyumen region, Russia) by Russians in the first half of the 20th c. based on field and archival data, as well as publications of the 1900-1930s. The main research methods include systematic and comparative historical analyses. It has been concluded that migrants from the Middle and Lower Irtysh regions populated the neighboring deep taiga territory using different routes; they presented two noticeably different models of colonization. The migration took place in several waves, but the most significant happened in the 1930s. The majority of the migrants were Russian Siberian old-timers who had the necessary experience and knowledge of the local conditions. For a substantial number of the Russian Irtysh region settlers — peasants, hunters and fishermen — the departure to the taiga became an es-cape from the external social pressure and government control, allowing them to improve their economic well-being. In this regard, surrounded by swamps impassable and vast area of the Demyanka River basin for several decades repre-sented a reliable refuge for fugitives who wanted to be beyond the easy reach of the state.

scholarly journals Methods of River Basin Territory Zoning in Terms of Aggregate Anthropogenic Load (the Ob-Irtysh River Basin as a Study Case)

2011 ◽  
pp. 42-52
Author(s):  
Keyword(s):  
River Basin ◽  
Water Bodies ◽  
Anthropogenic Load ◽  
Irtysh Basin ◽  
Major River ◽  
Irtysh River ◽  
Study Case ◽  
Mapping Models

The paper presents the authors’ method of a major river basin territory zoning (ranking) according to the aggregate anthropogenic load degree that has been tested on the Ob-Irtysh basin. The work’s outcomes have been reflected as the basin mapping models in general and in the form of individual water/economic sites. The method can be used in development of Scheme of Water Bodies Integrated Use and Protection (SWBIUP).

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