Mongolian State University of Education
Ulaanbaatar, Mongolia
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Bazha S.N.,RAS Severtsov Institute of Ecology | Baldanov B.T.,Russian Academy of Sciences | Baskhaeva T.G.,Buryat State University | Danzhalova E.V.,RAS Severtsov Institute of Ecology | And 6 more authors.
Arid Ecosystems | Year: 2016

The degradation of landscapes related to their deforestation is the most widespread process in the world at the present time, and its control is considered especially important for preservation of the ecological stability of forest regions. Thus, the elaboration of measures for reforestation of previously forested lands is a high-priority task. This is the case for the forest-steppe landscapes of the Lake Baikal basin. The results of the use of a combination of indicators to reveal those ecotopes that still have regeneration potential for coniferous and coniferous–small-leaved forests at the southern boundary of the boreal belt in Asia are given in this article. © 2016, Pleiades Publishing, Ltd.

Gunin P.D.,RAS Severtsov Institute of Ecology | Bazha S.N.,RAS Severtsov Institute of Ecology | Danzhalova E.V.,RAS Severtsov Institute of Ecology | Drobyshev Y.I.,RAS Severtsov Institute of Ecology | And 10 more authors.
Arid Ecosystems | Year: 2015

The article describes the regional features of ecosystem desertification in the southern periphery of the Baikal basin that are located in the zone of cross-border interaction between the southern Siberian and the Central Asian internal drainage basin landscapes. The nature of such interactions is identified as invasive, which is associated with the penetration of desert-steppe plant species: Caragana bungei are found in larch forests, and Allium polyrrhizum are found in dry steppes. A high degree of species adaptation to the modern arid climate is defined by ecological and physiological analysis of these species characteristics. The significant predominance of Caragana bungei and Allium polyrrhizum in the current structure of plant communities makes it possible to identify a long-term and widespread invasive succession and to characterize this process as a specific desertification form. © 2015, Pleiades Publishing, Ltd.

Tuguldur A.,Traditional Medical Science and Technology and Production Corporation of Mongolia | Tuguldur A.,Mongolian State University of Education | Khongorzul T.S.,Mongolian State University of Education | Narangerel B.,Veterinary Institute of Mongolia | Dagvatseren B.,Traditional Medical Science and Technology and Production Corporation of Mongolia
International Journal of PharmTech Research | Year: 2014

The present study describes the antimicrobial activity of Naru-3 extract against microorganism. Staphylococcus aureus, Escherichia coli, Salmonella typhi, Brucella melitensis. For this purpose extract of drug Naru-3 were prepared and tested by "Disc Diffusion Method". As a result of this study it was found that the extract of Naru-3 generally revealed antimicrobial activity against both gram positive bacteria (Staphylococcus aureus)and gram-negative bacteria (Escherichia coli, Salmonella typhi, Brucella melitensis).

Khansaritoreh E.,University of Gottingen | Dulamsuren C.,University of Gottingen | Klinge M.,University of Gottingen | Ariunbaatar T.,Institute of General and Experimental Biology Mongolian Academy of science Ulan Bator Mongolia | And 9 more authors.
Global Change Biology | Year: 2017

Forest fragmentation has been found to affect biodiversity and ecosystem functioning in multiple ways. We asked whether forest size and isolation in fragmented woodlands influences the climate warming sensitivity of tree growth in the southern boreal forest of the Mongolian Larix sibirica forest steppe, a naturally fragmented woodland embedded in grassland, which is highly affected by warming, drought, and increasing anthropogenic forest destruction in recent time. We examined the influence of stand size and stand isolation on the growth performance of larch in forests of four different size classes located in a woodland-dominated forest-steppe area and small forest patches in a grassland-dominated area. We found increasing climate sensitivity and decreasing first-order autocorrelation of annual stemwood increment with decreasing stand size. Stemwood increment increased with previous year's June and August precipitation in the three smallest forest size classes, but not in the largest forests. In the grassland-dominated area, the tree growth dependence on summer rainfall was highest. Missing ring frequency has strongly increased since the 1970s in small, but not in large forests. In the grassland-dominated area, the increase was much greater than in the forest-dominated landscape. Forest regeneration decreased with decreasing stand size and was scarce or absent in the smallest forests. Our results suggest that the larch trees in small and isolated forest patches are far more susceptible to climate warming than in large continuous forests pointing to a grim future for the forests in this strongly warming region of the boreal forest that is also under high land use pressure. © 2017 John Wiley & Sons Ltd.

Ch. Das K.,Sungkyunkwan University | Gutman I.,University of Kragujevac | Horoldagva B.,Mongolian State University of Education
Match | Year: 2012

The first (M1) and the second (M2) Zagreb indices, as well as the first (M̄1) and the second (M̄2) Zagreb coindices, and the relations between them are examined. An upper bound on M1(T) and a lower bound on 2M2(T) + 1/2M1(T) of trees is obtained, in terms of the number of vertices (n) and maximum degree (Δ). Moreover, we compare the Zagreb indices and the Zagreb coindices of trees.

Hasumi M.,Niigata University | Hongorzul T.,Mongolian State University of Education | Terbish K.,National University of Mongolia
Limnology | Year: 2011

The biodiversity of wetland ecosystems has received scant attention in Mongolia. We measured amphibian and macroinvertebrate species diversity at a complicated land-water ecotone of a pond within a wetland complex in Shaamar during July 2005. From our study area (0.5-ha grassland and an adjacent pond), we sampled 4,926 animals including 1 mammal, 4 amphibian, and 26 aquatic macroinvertebrate (>2 mm) species with a biomass of 4,444 g. Among these, a backswimmer (Notonectidae sp. 1) was a dominant species, representing 65% of the total number of animals collected (3,209) and 22% of the mass (999 g). Our study area was small but contained 4 amphibian species (Hyla japonica, Rana amurensis, Bufo raddei, and Salamandrella keyserlingii) in a mixed community with Shannon Diversity Index (H′) of 1.678 and Pielou's Evenness Index (J′) of 1.211. No larvae or tadpoles of any amphibian species were found in the pond, indicating their early metamorphosis. H′ and J′ with 26 macroinvertebrate species were estimated to be 1.828 and 0.561, respectively. This suggests that low macroinvertebrate species diversity relative to high species richness is due to low evenness resulting from considerable numbers of a backswimmer. In 6 sites sampled in the pond, mean water pH revealed high alkalinity (range 9.01-10.45). The presence of our taxa in a highly alkaline environment indicates that they may be alkaliphilic. © 2010 The Japanese Society of Limnology.

Hasumi M.,Niigata University | Hongorzul T.,Mongolian State University of Education | Nakagawa M.,Kinki University
Polar Biology | Year: 2014

Darhadyn Wetland, Mongolia, is located in a subarctic steppe-tundra climate, where salamanders are exposed to both extremely hot and cold environments. We hypothesized that log refugia provide an adaptive advantage to salamanders in these environments because the habitat availability hypothesis predicts that restricted habitat availability can cause aggregation that plays a role in the initial stages of the evolution of complex sociality. To test this hypothesis, we assessed whether a rare salamander species aggregated under a limited shelter resource. Many small vertebrates use terrestrial burrow refuges. While many salamander species also use burrows, Salamandrella keyserlingii at Darhadyn used only downed log refuges (i.e., restricted habitat availability). Some individuals displayed site tenacity to remain under a specific log, and one or more of the same individuals were located continually or frequently under the same logs. The majority of recapture events (96.8 %, 121/125) did not show any movements of salamanders between logs. Of the 300 capture events, 66 % were aggregating. The maximum number of individuals sharing a log refuge on the same day (i.e., sharing group size) ranged from 2 to 9. Individuals were resident nonrandomly in downed log refuges, i.e., an aggregation pattern was nonrandom. Based on these findings, we provided conservation measures such that total number of individuals captured per log over the course of the study (maximum number = 32) had a positive relationship to 1 of 7 explanatory variables (i.e., log decaying class in ascending order). Thus, the retention of decaying downed logs is important for the conservation of this species. © 2014 Springer-Verlag Berlin Heidelberg.

Shagdar D.,Mongolian State University of Education | Yadamsuren O.,Mongolian State University of Education
Journal of Asia-Pacific Biodiversity | Year: 2016

The Kherlen Toono Mountain Natural Reserve has a unique natural formation that makes its flora and vegetation cover unique. This study aimed to prepare a species inventory of flora and conduct make visual assessments of the vegetation cover of Kherlen Toono Mountain. A total of 202 species belonging to 115 genera, 46 families, and 4 phyla (Equisetophyta, Polypodiophyta, Pinophyta, and Magnoliophyta) were recorded. During this study, a species [. Vincetoxicum lanceolatum (Grubov) Grubov] was newly recorded in the vegetation of the Dundad Khalkh district. An endemic species, 7 subendemic species (4.9%), and 10 rare species (3.9%) were recorded in the study area, which comprised 8.9% of the total species. These species recordings indicated the unique flora of the Kherlen Toono Mountain region. Forb-khargana and needle grass-forb communities of 10 different communities were commonly recorded in the study area. © 2016 National Science Museum of Korea (NSMK) and Korea National Arboretum (KNA).

Amarsaikhan D.,Mongolian Academy of science | Bat-Erdene Ts.,Mongolian State University of Education
34th Asian Conference on Remote Sensing 2013, ACRS 2013 | Year: 2013

The aim of this study is to conduct urban mapping and analyze the land use changes of Ulaanbaatar city, Mongolia using very high resolution remote sensing (RS) and geographical information system (GIS) data sets. For the study, the changes that occurred before 1990 are compared with the changes that occurred after 1990 and the socio-economic reasons for the changes are described. For the development of the primary digital database, a large scale topographic map and historical description of the land use elements are used. To generate land use information from the fused RS images, a visual interpretation is applied. Overall, the study demonstrates that during the market economy the central part of the capital city is urbanized very rapidly and became very dense. Copyright © (2013) by the Asian Association on Remote Sensing.

Amarsaikhan E.,Mongolian Academy of science | Erdene T.B.,Mongolian State University of Education | Damdinsuren A.,Mongolian Academy of science
33rd Asian Conference on Remote Sensing 2012, ACRS 2012 | Year: 2012

The aim of this study is to investigate the city management in Ulaanbaatar, specifically in the district-13 area, using modern game theory and a GIS. Initially, a primary digital database is developed using available (spatial and attribute) data sets, and then updated through processing of a very high resolution satellite image. Applying "The Tragedy of the Commons" framework we have found that the private incentives among the construction companies drove the supply of apartments higher. We estimated that if the construction companies cooperated instead of competed with each other, it would have been socially optimal.

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