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The bacterial diversity of the sample BM from the non-interacted mining area was significantly abundant compared to mining interacted samples. Nine phyla were dominant in the bacterial community structure. But in samples from the mining operation area sample VBKB-b and abandoned mining sample are VBKB-b, 3 phyla Firmicutes (59-66%), Actinobacteria (17.4-26.8%), Proteobacteria (11-14%) were dominant in the bacterial community.
Airborne dust and sand particles caused by wind erosion have been associated with serious problems in human health as well as high tech industrial machines. There are many conventional methods of suppressing dusts to reduce the wind erosion potential: agronomic, surface penetration, admixture, and surface. In the past, most control methods have been either chemical or mechanical, resulting in certain degrees of health hazard or frequent applications. An alternative method, surface vegetation, becomes increasingly popular but it is very slow and costly.
In the area of Tsogttsetsii sum, Umnugobi, have mining of the coal through open and concentrating population and vehicles, which are polluting of the environment local area. We have determined the soil chemistry and hygienic parameters of soil Tsogttsetsii sum, Umnugobi province.
Viruses are the most abundant biological entities in aquatic biocenoses. They substantially influence many biogeochemical processes and efficiently regulate abundance and species diversity of biota. For the past two decades great interest has been paid to the study of virus communities of aquatic ecosystems. However, many of them, especially freshwater ecosystems, are still poorly studied. The aim of this work was to perform a genetic analysis of cyanophage diversity in Lake Baikal and Lake Hovsgol.
Water quality monitoring is one of the main problems for Mongolia since people and livestock directly use surface and shallow well water for drinking. Water quality could be evaluated by bacterial abundance and diversity changes. There are lots of studies on microbial abundance and diversity along rivers. However, most of them are conducted in developed countries. Therefore, it is needed to investigate the bacterial abundance and diversity changes in our rivers. We will introduce how did we detect the bacterial abundance and diversity changes along the Kharaa River. In terms of diversity analysis, we did not find significant changes, especially at the broader taxonomic categories such as phylum, subphylum, class, order, and family. But we found significant shifts in the OTU (Operational Taxonomic Unit) abundance, especially by detecting the most trendy (with increasing and decreasing abundance along the river) OTUs along the Kharaa River. In the next step, we will analyze what environmental factors are shaping these shifts.
This study is designated for exploring microbial diversity of the mine using MiSeq high throughout sequencing technology. The microbial diversity of the sample BM from the non-interacted mining area was significantly abundant compared to mining interacted samples. Nine phyla were dominant in the bacterial community structure. But in samples from the mining operation area sample VBKB-b and abandoned mining sample are VBKB-b, 3 phyla Firmicutes (59-66%), Actinobacteria (17.4-26.8%), Proteobacteria (11-14%) were dominant in the bacterial composition.
Arsenic is a toxic element released into the environment either by natural phenomena (weathering, volcanic activity) or by anthropogenic activities. Arsenic mainly occurs in two inorganic forms, arsenate As(V) and arsenite As(III). The bacterial oxidation of As[III] to As[V] represents a potential detoxification mechanism and has applications in bioremediation because it generates less toxic and less mobile forms of arsenic. Nevertheless, the role of the bacteria in the arsenic cycle are yet to be fully elucidated. Microplate screening is a cost effective, reliable and rapid method for the detection of bacterial strains with both arsenic transformation activities – oxidative or reductive. In present study, we investigated arsenic oxidizing bacteria isolated from mining soil in Tavantolgoi, Mongolia.
The draft genome sequence of Halomonas sp. strain ANAO-440 contains 3,866 predicted protein-coding sequences. This strain is capable of anaerobic arsenite oxidation and encodes an arxA-type arsenite oxidase within the arxB2AB1CD gene island. This genome sequence provides valuable information regarding the physiological diversity of Arx-dependent arsenite-oxidizing microorganisms.
Bioremediation has been attracting researchers’ attention to develop as a technique to remove the pollution of crude oil in the environment. However, more or stronger novel strains capable of crude oil removal are still required. In this study, the potential of five newly isolated bacterial strains for crude oil abatement was evaluated in the liquid medium and contaminated soil individually and as a mixed consortium. Raoultella ornithinolytica strain PS exhibited the highest ability and degraded up to 83.5% of crude oil. Whereas Bacillus subtilis strain BJ11 degraded 81.1%, Acinetobacter lwoffii strain BJ10 degraded 75.8%, Acinetobacter pittii strain BJ6 degraded 74.9%, and Serratia marcescens strain PL degraded only 70.0% of crude oil in the liquid media. The consortium comprising the above five strains degraded more than 94.0% of crude oil after 10 days of incubation in the liquid medium. The consortium degraded more than 65.0% of crude oil after 40 days incubation even in the contaminated soil. The five crude oil degrading strains, especially their consortium, exhibited a high capability to break down a wide range of compounds in crude oil including straight-chain alkanes, branched alkanes, and aromatic hydrocarbons. These strains, especially as consortia, have good potential of application in the remediation of crude oil–contaminated environments.
Mining is affect negatively to the natural environment. Detecting the hygienic microorganisms from the external environment is prove in that object may be availability living a pathogenic organisms. We have determined the soil chemistry and hygienic parameters of soil around open pit in Zaamar and Sergelen soums of Tuv province. The results showed that the humus content of the soil was 1.01-1.72% lower, the pH soil reaction was alkaline and sandy mechanical components, mobile phosphorus (P2O5) in 100 g of soil 0.9-3.8 mg, potassium 13-21 mg and the sum of the absorbed bases (Ca2++Mg2+) is 6-27 mg-eqv. According to the hygienic microbiological study, soil samples are belongs to different levels of contamination by the total bacterial number and coli form bacteria contained in 1 g of soil. Some of besides 8 samples were not contaminated with anaerobic bacteria and were not detected coli form pathogens in the study soil.
The main aim of this study was determinant of some indication of the hygienic microbiology openly mining area located at Zaamar and Sergelen soums, Tuv province. According to microbiological study, 1 g soil in Zaamar soum contains an average of 1.01 × 106 cells and 82.5% bacteria, 14.6% actinomycin and 2.9% mold. Gram positive and endangered rods with did not endospore dominanted in the soil. As a result of hygienic microbiological investigation, soil samples were subject to different levels of contamination by total bacterial number and coli forms contents contained in soil per 1 g. 8 samples were not contaminated with anaerobic bacteria and bacterial pathogens in the study soil were not detected.
In the area of Tsogttsetsii sum, Umnugobi, have mining of the coal through open and centralizing population and vehicles, which made polluting of the environment local area. As the environmental pollution are causing of diseases for the living organisms. Through our previous investigation, we were collected the soil samples from 8 sites of the Tsogttsetsii sum, Umnugobi. The environmental pollution not only causes of disease for the living organisms but also change their genes, which clear by investigation of researchers and current studies of soil and water towards for determine the mutagenic activity. Never study the genotoxicological investigation of soil and water of Tsogttsetsii sum, Umnugobi.
Soil degradation is becoming a notable problem due to open-pit mining that is bringing movement of heavy machinery and people in Tsogttsetsii, Umnugobi. Therefore, there is urgent need to test and implement optimal, low-cost and efficient method to mitigate soil degradation in these areas. In recent times, microbiological studies on methods that employ microorganisms are experimented internationally. We carried out microbiological study using test strain Sporosarcina pasteurii ATCC 11859 to reduce soil degradation. Our result showed soil adhesion increased by 13-58 fold when S.pasteurii was used at concentration of 106-108 cells/ml.
Уул уурхайн нөхөн сэргээлтэнд бичил организм болон ургамлыг хоршин ашиглахнь орчин үеийн биологийн нөхөн сэргээлтийн ашигтай хувилбар болж байна. Олон наст ургамлын өсөлтөнд Arthrobacter pascens -ийн эерэг нөлөө үзүүлж байгааг туршилтаар тогтоосон болно.
