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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Genova S.N., Belolipetskii V.M., Rogozin D.Y., Degermendzhy A.G., Mooij W.M.
Заглавие : A one-dimensional model of vertical stratification of Lake Shira focussed on winter conditions and ice cover
Место публикации : Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - С. 571-584. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-010-9327-7
Ключевые слова (''Своб.индексиров.''): convective mixed layer--ice formation--ice melting--simplified model--winter profiles--anoxic conditions--hydrogen sulfide--ice cover--inhomogeneity--meromictic lake--numerical model--one-dimensional modeling--pycnocline--salinity--seasonality--stratification--vertical profile--water column--water temperature--khakassia--lake shira--russian federation
Аннотация: In meromictic lakes such as Lake Shira, horizontal inhomogeneity is small in comparison with vertical gradients. To determine the vertical distribution of temperature, salinity, and density of water in a deep zone of a Lake Shira, or other saline lakes, a one-dimensional (in vertical direction) mathematical model is presented. A special feature of this model is that it takes into account the process of ice formation. The model of ice formation is based on the one-phase Stefan problem with the linear temperature distribution in the solid phase. A convective mixed layer is formed under an ice cover due to salt extraction in the ice formation process. To obtain analytical solutions for the vertical distribution of temperature, salinity, and density of water, we use a scheme of vertical structure in the form of several layers. In spring, the ice melts as top and bottom. These processes are taken into account in the model. The calculated profiles of salinity and temperature of Shira Lake are in good agreement with field measurement data for each season. Additionally, we focussed on the redox zone, which is the zone in which the aerobic layers of a water column meet the anaerobic ones. Hyperactivity of plankton communities is observed in this zone in lakes with hydrogen sulphide monimolimnion, and Lake Shira is among them. The location of the redox zone in the lake, which is estimated from field measurements, coincides with a sharp increase in density (the pycnocline) during autumn and winter. During spring and summer, the redox zone is deeper than the pycnocline. The location of pycnocline calculated with the hydro physical model is in good agreement with field measurement data. В© 2010 Springer Science+Business Media B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Anishchenko O. V., Tolomeev A. P., Ivanova E. A., Drobotov A. V., Kolmakova A. A., Zuev I. V., Gribovskaya I. V.
Заглавие : Accumulation of elements by submerged (Stuckenia pectinata (L.) Borner) and emergent (Phragmites australis (Cav.) Trin. ex Steud.) macrophytes under different salinity levels
Место публикации : Plant Physiol. Biochem.: Elsevier Masson SAS, 2020. - Vol. 154. - С. 328-340. - ISSN 09819428 (ISSN), DOI 10.1016/j.plaphy.2020.05.019
Аннотация: Accumulation of essential/beneficial and non-essential chemical elements by submerged (Stuckenia pectinata (L.) Borner) and emergent (Phragmites australis (Cav.) Trin. ex Steud.) rooted macrophytes in three water bodies was studied as dependent on water salinity (specific conductivity) and main environmental factors (temperature, pH of water, growing period, element contents in water and sediments). Inductively coupled plasma optical emission spectrometry (ICP - OES) was used for the element detection in the plants, sediments, and water. Multivariate statistics redundancy analysis (RDA) showed that investigated factors together explained 37.8 - 44.7% and 29.9 - 42.6% of the essential/beneficial and non-essential elements variability, respectively, whereas salinity was one of the main factors determining the accumulation of a number of elements (Mg, S, Na, Li, Sr, Sb) by the macrophytes. A decrease in the essential element contents (K, P, N, Cu, Zn) was observed in both species of the macrophytes during the growing season. Environmental factors (salinity, growing period, and pH) were more significant than the element contents in water and the sediments for the essential/beneficial element accumulation by two species of the macrophytes. The element contents in the sediments to a greater extent determined non-essential element accumulation by P. australis than by S. pectinata. The study showed that the efficiency of using P. australis and S. pectinata for remediation of aquatic ecosystems contaminated by heavy metals should not decrease with a salinity increase. © 2020 Elsevier Masson SAS
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Anishchenko, O., V, Tolomeev A. P., Ivanova E. A., Drobotov, A., V, Kolmakova A. A., Zuev, I., V, Gribovskaya, I., V
Заглавие : Accumulation of elements by submerged (Stuckenia pectinata (L.) Borner) and emergent (Phragmites australis (Cay.) Trin. ex Steud.) macrophytes under different salinity levels
Колич.характеристики :13 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [15-04-00797-a]
Место публикации : Plant Physiol. Biochem.: ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 2020. - Vol. 154. - С. 328-340. - ISSN 0981-9428, DOI 10.1016/j.plaphy.2020.05.019
Примечания : Cited References:44. - The work was supported by Russian Foundation for Basic Research, grant No. 15-04-00797-a. The authors are grateful to the staff of Analytical Laboratory at the Institute of Biophysics SB RAS for the plant and sediment sample preparation for ICP-OES analysis and Elena Krasova for linguistic check and improvements.
Предметные рубрики: SEDIMENT QUALITY GUIDELINES
HEAVY-METAL ACCUMULATION
SALT-MARSH
Аннотация: Accumulation of essential/beneficial and non-essential chemical elements by submerged (Stuckenia pectinata (L.) Borner) and emergent (Phragmites australis (Cay.) Trin. ex Steud.) rooted macrophytes in three water bodies was studied as dependent on water salinity (specific conductivity) and main environmental factors (temperature, pH of water, growing period, element contents in water and sediments). Inductively coupled plasma optical emission spectrometry (ICP - OES) was used for the element detection in the plants, sediments, and water. Multivariate statistics redundancy analysis (RDA) showed that investigated factors together explained 37.8 44.7% and 29.9 - 42.6% of the essential/beneficial and non-essential elements variability, respectively, whereas salinity was one of the main factors determining the accumulation of a number of elements (Mg, S, Na, Li, Sr, Sb) by the macrophytes. A decrease in the essential element contents (K, P, N, Cu, Zn) was observed in both species of the macrophytes during the growing season. Environmental factors (salinity, growing period, and pH) were more significant than the element contents in water and the sediments for the essential/beneficial element accumulation by two species of the macrophytes. The element contents in the sediments to a greater extent determined non-essential element accumulation by P. australis than by S. pectinata. The study showed that the efficiency of using P. australis and S. pectinata for remediation of aquatic ecosystems contaminated by heavy metals should not decrease with a salinity increase.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Baatar, Bayanmunkh, Chiang, Pei-Wen, Rogozin, Denis Yu, Wu, Yu-Ting, Tseng, Ching-Hung, Yang, Cheng-Yu, Chiu, Hsiu-Hui, Oyuntsetseg, Bolormaa, Degermendzhy, Andrey G., Tang, Sen-Lin
Заглавие : Bacterial Communities of Three Saline Meromictic Lakes in Central Asia
Колич.характеристики :22 с
Коллективы : National Sciences Council of Taiwan [NSC99- 2923-B-001-001-MY3, NSC 102-2923-B-001-004, NSC101-2923-B-001-003-MY3, NSC99-2923-B-001-001-MY3]; Biodiversity Research Center, Academia Sinica, Taiwan; Russian Foundation for Basic Research [14-04-01060-a]
Место публикации : PLoS One: PUBLIC LIBRARY SCIENCE, 2016. - Vol. 11, Is. 3. - Ст.e0150847. - ISSN 1932-6203, DOI 10.1371/journal.pone.0150847
Примечания : Cited References:65. - This study was supported by the thematic project funding of Taiwan-Russian Joint Project (NSC99- 2923-B-001-001-MY3 and NSC 102-2923-B-001-004) and Taiwan-Mongolian Joint Project (NSC101-2923-B-001-003-MY3) from the National Sciences Council of Taiwan and Biodiversity Research Center, Academia Sinica, Taiwan and the Russian Foundation for Basic Research, Grant No. 14-04-01060-a.; We thank our Russian and Mongolian colleagues in the Institute of Biophysics SB RAS and National University of Mongolia for assistance with providing samples and hydro-parameter data. This study was supported by the thematic project funding of Taiwan-Russian Joint Project (NSC99-2923-B-001-001-MY3 and NSC 102-2923-B-001-004) and Taiwan-Mongolian Joint Project (NSC101-2923-B-001-003-MY3) from the National Sciences Council of Taiwan and Biodiversity Research Center, Academia Sinica, Taiwan and the Russian Foundation for Basic Research, Grant No. 14-04-01060-a.
Предметные рубрики: PURPLE SULFUR BACTERIA
REAL-TIME PCR
MICROBIAL COMMUNITIES
Аннотация: Meromictic lakes located in landlocked steppes of central Asia (similar to 2500 km inland) have unique geophysiochemical characteristics compared to other meromictic lakes. To characterize their bacteria and elucidate relationships between those bacteria and surrounding environments, water samples were collected from three saline meromictic lakes (Lakes Shira, Shunet and Oigon) in the border between Siberia and the West Mongolia, near the center of Asia. Based on in-depth tag pyrosequencing, bacterial communities were highly variable and dissimilar among lakes and between oxic and anoxic layers within individual lakes. Proteobacteria, Bacteroidetes, Cyanobacteria, Actinobacteria and Firmicutes were the most abundant phyla, whereas three genera of purple sulfur bacteria (a novel genus, Thiocapsa and Halochromatium) were predominant bacterial components in the anoxic layer of Lake Shira (similar to 20.6% of relative abundance), Lake Shunet (similar to 27.1%) and Lake Oigon (similar to 9.25%), respectively. However, few known green sulfur bacteria were detected. Notably, 3.94% of all sequencing reads were classified into 19 candidate divisions, which was especially high (23.12%) in the anoxic layer of Lake Shunet. Furthermore, several hydro-parameters (temperature, pH, dissolved oxygen, H2S and salinity) were associated (P0.05) with variations in dominant bacterial groups. In conclusion, based on highly variable bacterial composition in water layers or lakes, we inferred that the meromictic ecosystem was characterized by high diversity and heterogenous niches.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mogilnaya O.A., Lobova T.I., Kargatova T.V., Popova L.Y.
Заглавие : Biofilm formation by bacterial associations under various salinities and copper ion stress
Колич.характеристики :9 с
Место публикации : Biofouling: TAYLOR & FRANCIS LTD, 2005. - Vol. 21, Is. 05.06.2013. - P247-255. - ISSN 0892-7014, DOI 10.1080/08924010500445848
Примечания : Cited References: 24
Предметные рубрики: HEAVY-METAL RESISTANCE
BACILLUS-SUBTILIS
PROTEIN
RISK
Ключевые слова (''Своб.индексиров.''): binary community--surface films--adhesion--copper--stress
Аннотация: The study addresses the effect of abiotic (medium salinity and copper ions) and biotic (interactions between populations) factors on the formation of structured communities by binary associations consisting of halotolerant bacteria (Alcaligenes sp. 1-1 or Acinetobacter sp. 1-19) and a wild-type B. subtilis 2335 strain or a transgenic strain. The results showed that 250 mg l(-1) of copper ions inhibit formation of biofilms by monocultures of the tested strains. Binary associations of the strains were more resistant to high concentrations (250 mg l(-1)) of copper ions. At the lowest NaCl concentration (0.05% and 2.5%) and in the presence of copper ions, bacilli seemed to help halotolerant bacteria survive. Under increased salinity and in the presence of copper ions, structured communities developed due to halotolerant bacteria. Coexistence under stressful conditions was beneficial for the both groups of bacteria.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Slyusar N.A., Pechurkin N.S., Zorkina T.M.
Заглавие : Characteristics of aboveground phytomass accumulation in halophytic plant communities under the conditions of different soil salinities
Место публикации : Doklady Biological Sciences. - 2010. - Vol. 432, Is. 1. - С. 194-197. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496610030087
Ключевые слова (''Своб.индексиров.''): fresh water--article--biomass--ecosystem--halophyte--physiology--salinity--soil--biomass--ecosystem--fresh water--salinity--salt-tolerant plants--soil
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rogozin D. Y., Tarnovsky M. O., Belolipetskii V. M., Zykov V. V., Zadereev E. S., Tolomeev A. P., Drobotov A. V., Barkhatov Y. V., Gaevsky N. A., Gorbaneva T. B., Kolmakova A. A., Degermendzhi A. G.
Заглавие : Disturbance of meromixis in saline Lake Shira (Siberia, Russia): Possible reasons and ecosystem response
Колич.характеристики :12 с
Коллективы : Russian Foundation for Basic Research [16-05-00091]; Russian Federation [NSh-9249.2016.5]
Место публикации : Limnologica: ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2017. - Vol. 66. - С. 12-23. - ISSN 0075-9511, DOI 10.1016/j.limno.2017.06.004. - ISSN 1873-5851(eISSN)
Примечания : Cited References:43. - We acknowledge the financial support by the Russian Foundation for Basic Research, grant No 16-05-00091. The research was partially supported by the Council on grants from the President of the Russian Federation for support of leading scientific schools (grant NSh-9249.2016.5). Many thanks to colleagues from analytical laboratory of Institute of Biophysics SB RAS for sulphide determination. We thank the employees of Middle Siberian Department of Russian Hydro Meteorological Service in Krasnoyarsk for providing the data on weather and Lake Shira level. We are grateful to Dr. Martin Schmid and two anonymous reviewers for valuable comments which helped us to improve the article considerably.
Предметные рубрики: SHUNET SOUTH SIBERIA
MEROMICTIC LAKE
VERTICAL STRATIFICATION
WINTER
Ключевые слова (''Своб.индексиров.''): meromixis--mixolimnion--stratification--stability--mixing--food chain--purple sulfur bacteria
Аннотация: Saline Lake Shira (Southern Siberia, Russia) was meromictic through the observation period 2002-2015. During the under-ice periods of 2015 and 2016, complete mixing of the water column was recorded for the first time, and hydrogen sulphide temporarily disappeared from the water column of the lake; i.e. in those years the lake turned to holomixis. In the summer of 2015, a sharp increase in chlorophyll a, organic carbon, zooplankton, and phytoflagellates was observed in the lake, which was probably due to the release of nutrients from the monimolimnion. Purple sulfur bacteria completely disappeared from the lake after the first mixing in 2015, and did not reappear despite the restoration of meromixis in 2017. Thus, it was demonstrated that purple sulfur bacteria are sensitive to the weakening of the stratification of Lake Shira. Based on the data of the seasonal monitoring of temperature and salinity profiles over the period 2002-2017, it was presumed that the main cause of deep mixing in 2015 was the weakening of the salinity gradient due to strong wind impact and early ice retreat in the spring of 2014. In addition, it was shown that in previous years a significant contribution to the maintenance of meromixis was made by an additional influx of fresh water, which caused a rise in the lake level in the period 2002-2007. Thus, we identified a relationship between the stratification regime of the lake and the change in its level, which provides valuable information both for the forecast of Water quality and for reconstruction of the Holocene climate humidity in this region of Southern Siberia from the sediment cores of Lake Shira.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gusakov, Vladimir A., Makhutova, Olesia N., Gladyshev, Michail I., Golovatyuk L. V., Zinchenko, Tatiana D.
Заглавие : Ecological Role of Cyprideis torosa and Heterocypris salina (Crustacea, Ostracoda) in Saline Rivers of the Lake Elton Basin: Abundance, Biomass, Production, Fatty Acids
Колич.характеристики :16 с
Коллективы : Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [13-04-00740, 15-04-03341, 17-04-00135]; Russian FederationRussian Federation [51.1.1]; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0006]
Место публикации : Zool. Stud.: BIODIVERSITY RESEARCH CENTER, ACAD SINICA, 2021. - Vol. 60. - Ст.53. - ISSN 1021-5506, DOI 10.6620/ZS.2021.60-53. - ISSN 1810-522X(eISSN)
Примечания : Cited References:84. - This research was performed in the framework of State Assignments No. 121051100109-1 and AAAA-A17-117112040039-7, and it was also supported by the grants from Russian Foundation for Basic Research (RFBR) (projects numbers 13-04-00740, 15-04-03341, 17-04-00135), State Assignment within the framework of the basic research program of the Russian Federation (topic No. 51.1.1), State Assignment of the Ministry of Science and Higher Education of the Russian Federation to Siberian Federal University in 2020 (project No. FSRZ-2020-0006 "Biologically active substances in environmental, biotechnological and medical systems"). The authors are grateful to Elena Krasova for linguistic check and improvements of the manuscript. We would also like to thank two anonymous reviewers for their constructive comments, recommendations as well as extra corrections of the paper's language and style.
Предметные рубрики: JONES 1850 CRUSTACEA
MACROZOOBENTHIC COMMUNITIES
INVERTEBRATES
Аннотация: Saline rivers are highly productive ecosystems in arid regions. The meiobenthic community (bottom meiofauna) and its dominant representatives are one of the least studied components of these aquatic ecosystems. Ostracods Cyprideis torosa and Heterocypris salina are major consumers among the species of bottom meiofauna in saline rivers flowing into the hyperhaline Lake Elton (Volgograd Region, Russia). We estimated the abundance, biomass and production of C. torosa, the dominant species at the mouth of the polyhaline Chernavka River (average salinity is similar to 30 g l(-1)), and H. salina, the dominant species at the mouth of the mesohaline Bolshaya Samoroda River (similar to 13 g l(-1)), in spring (May) and summer (August). Additionally, we studied the composition and content of fatty acids of the ostracods and their potential food sources (bottom sediments with bacterial-algal mats). We found that the abundance and biomass (wet weight with shells) of C. torosa in the Chernavka River and H. salina in the Bolshaya Samoroda River reached 3.5 x 10(6) ind. m(-2) and 117 g m(-2), and 1.1 x 10(5) ind. m(-2) and 12 g m(-2), respectively. The first species formed on average about 85% of the total abundance and 96% of the total biomass of the meiobenthos, and the second one, about 13% and 31%, respectively. The daily production of C. torosa and H. salina can reach 249 and 36 mg m(-2) ash-free dry weight, respectively. The results indicate that these species may play an important role in the total flow of matter and energy in the studied habitats. Based on the fatty acid (FA) composition of the ostracods and their food sources, it was found that C. torosa mainly consumed diatoms, while H. salina preferred bacteria, cyanobacteria, and green algae. Differences between the species were greater than differences between the bottom sediments from the rivers. It may mean that the ostracods selectively consumed different food items that may be related to the different nutrient requirements of the species. Seasonal changes in the FA compositions of the ostracods were higher than in their food sources (bottom sediments), which also indicates selective feeding of the species.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gusakov V. A., Makhutova O. N., Gladyshev M. I., Golovatyuk L. V., Zinchenko T. D.
Заглавие : Ecological role of cyprideis torosa and heterocypris salina (Crustacea, ostracoda) in saline rivers of the lake elton basin: Abundance, biomass, production, fatty acids
Место публикации : Zool. Stud.: Biodiversity Research Center, Academia Sinica, 2021. - Vol. 60. - С. 60-53. - ISSN 10215506 (ISSN), DOI 10.6620/ZS.2021.60-53
Аннотация: Saline rivers are highly productive ecosystems in arid regions. The meiobenthic community (bottom meiofauna) and its dominant representatives are one of the least studied components of these aquatic ecosystems. Ostracods Cyprideis torosa and Heterocypris salina are major consumers among the species of bottom meiofauna in saline rivers flowing into the hyperhaline Lake Elton (Volgograd Region, Russia). We estimated the abundance, biomass and production of C. torosa, the dominant species at the mouth of the polyhaline Chernavka River (average salinity is ~30 g l-1), and H. salina, the dominant species at the mouth of the mesohaline Bolshaya Samoroda River (~13 g l-1), in spring (May) and summer (August). Additionally, we studied the composition and content of fatty acids of the ostracods and their potential food sources (bottom sediments with bacterial-algal mats). We found that the abundance and biomass (wet weight with shells) of C. torosa in the Chernavka River and H. salina in the Bolshaya Samoroda River reached 3.5 ? 106 ind. m-2 and 117 g m-2, and 1.1 ? 105 ind. m-2 and 12 g m-2, respectively. The first species formed on average about 85% of the total abundance and 96% of the total biomass of the meiobenthos, and the second one, about 13% and 31%, respectively. The daily production of C. torosa and H. salina can reach 249 and 36 mg m-2 ash-free dry weight, respectively. The results indicate that these species may play an important role in the total flow of matter and energy in the studied habitats. Based on the fatty acid (FA) composition of the ostracods and their food sources, it was found that C. torosa mainly consumed diatoms, while H. salina preferred bacteria, cyanobacteria, and green algae. Differences between the species were greater than differences between the bottom sediments from the rivers. It may mean that the ostracods selectively consumed different food items that may be related to the different nutrient requirements of the species. Seasonal changes in the FA compositions of the ostracods were higher than in their food sources (bottom sediments), which also indicates selective feeding of the species. © 2021 Academia Sinica, Taiwan.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakova S.A., Kovaleva N.P., Gribovskaya I.V., Dolgushev V.A., Tikhomirova N.A.
Заглавие : Effect of NaCl concentration on productivity and mineral composition of Salicornia europaea as a potential crop for utilization NaCl in LSS
Место публикации : Advances in Space Research. - 2005. - Vol. 36, Is. 7. - С. 1349-1353. - ISSN 02731177 (ISSN) , DOI 10.1016/j.asr.2004.09.017
Ключевые слова (''Своб.индексиров.''): life support system--nacl--salicornia europaea--space biology--calcium--concentration (process)--minerals--photosynthesis--plants (botany)--salinity measurement--sodium chloride--vegetation--life support systems--liquid wastes--nacl--salicornea europea--space biology--space research
Аннотация: The accumulation of solid and liquid wastes in manmade ecosystems presents a problem that has not been efficiently solved yet. Urine, containing NaCl, are part of these products. This is an obstacle to the creation of biological systems with a largely closed material cycling, because the amount of solid and liquid wastes in them must be reduced to a minimum. A possible solution to the problem is to select plant species capable of utilizing sufficiently high concentrations of NaCl, edible for humans, and featuring high productivity. Until recently, the life support systems have included the higher plants that were either sensitive to salinization (wheat, many of the legumes, carrot, potato, maize) or relatively salt-resistant (barley, sugar beet, spinach). Salicomia europaea, whose above-ground part is fully edible for humans, is one of the most promising candidates to be included in life support systems. It is reported in the literature that this plant is capable of accumulating up to 50% NaCl (dry basis). Besides, excessive accumulation of sodium ions should bring forth a decrease in the uptake of potassium ions and other biogenic elements. The aim of this work is to study the feasibility of using S. europaea plants in growth chambers to involve NaCl into material cycling. Plants were grown in vegetation chambers at the irradiance of 100 or 150 W/m2 PAR (photosynthetically active radiation) and the air temperature 24 В°C, by two methods. The first method was to grow the plants on substrate - peat. The peat was supplemented with either 3% NaCl (Variant 1) or 6% NaCl (Variant 2) of the oven-dry mass of the peat. The second method was to grow the plants in water culture, using the solution with a full complement of nutrients, which contained 0.0005% of NaCl, 1% or 2%. The study showed that the addition of NaCl to the substrate or to the solution resulted in the formation of more succulent plants, which considerably increased their biomass. The amount of NaCl uptake was the highest in the plants grown in water culture, 2.6 g per plant. As the sodium uptake increased, the consumption of potassium and the sum of the reduced N forms decreased twofold. The uptake of calcium and magnesium by plants decreased as the NaCl concentration increased; the smallest amounts were taken up by S. europaea grown in water culture. Salinity had practically no effect on the uptake of phosphorus and sulfur. Thus, S. europaea is a promising candidate to be included in life support systems; of special interest is further research on growing these plants in water culture. В© 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakova S.A., Kovaleva N.P., Tikhomirova N.A., Gribovskaya I.V., Kolmakova A.A.
Заглавие : Effect of photosynthetically active radiation, salinization, and type of nitrogen nutrition on growth of Salicornia europaea plants
Место публикации : Russian Journal of Plant Physiology. - 2006. - Vol. 53, Is. 6. - С. 785-792. - ISSN 10214437 (ISSN) , DOI 10.1134/S1021443706060094
Ключевые слова (''Своб.индексиров.''): nacl salinization--photosynthetically active radiation--productivity--salicornia europaea--types of nitrogen nutrition--salicornia europaea
Аннотация: Effects of various combinations of nutrient solution salinity (0.3, 171, and 342 mM NaCl), photosynthetically active radiation (PAR) of 600 or 1150 ?mol/(m2 s), and type of nitrogen nutrition (amide-N or nitrate-N) on the productivity and the content of accumulated mineral nutrients and free amino acids were studied in Salicornia europaea plants. At PAR of 600 ?mol/(m2 s), plant productivity increased with elevation of salinity level; at 1150 ?mol/(m2 s), the maximum productivity was observed in the plants grown at 171 mM of NaCl. The content of free amino acids in shoots, regardless of PAR, decreased with growing salinity level, whereas Na content, on the opposite, increased. Glutamic acid, rather than proline, was shown to be the main organic osmolyte in this plant species. Comparison of the productivity of plants grown on solutions with amide (urea) or nitrate nitrogen showed that higher biomass accumulation was achieved in the former case. В© 2006 Nauka/Interperiodica.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin A.N., Lobova T.I., Yu Krylova T., Kargatova T.V., Yu Popova L., Pechurkin N.S.
Заглавие : Effect of salinity on the adaptive capacity of recombinant strains of escherichia coli and bacillus subtilis
Место публикации : Mikrobiologiya. - 2000. - Vol. 69, Is. 2. - С. 243-247. - ISSN 00263656 (ISSN)
Ключевые слова (''Своб.индексиров.''): genetically modified microorganisms--salinity--salt resistance--sodium chloride--adaptation--article--bacillus subtilis--electrolyte balance--escherichia coli--genetic recombination--genetics--physiology--adaptation, biological--bacillus subtilis--escherichia coli--recombination, genetic--sodium chloride--water-electrolyte balance
Аннотация: Effect of different concentrations of salts on natural and recombinant strains of Bacillus subtilis and Escherichia coli was studied. The recombinant strain of B. subtilis was found to be more osmotolerant than the wild-type strain of this bacterium, whereas the opposite situation was observed for the recombinant and wildtype strains of E. coli. Some salts exerted a bacteriostatic effect on E. coli and B. subtilis. The adaptive capacity of recombinant strains depended on the number of plasmid copies in the cells. The introduction of recombinant bacteria into model ecosystems resulted in the generation of their variants with increased osmotolerance.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin A.N., Lobova T.I., Krylova T.Yu., Kargatova T.V., Popova L.Yu., Pechurkin N.S.
Заглавие : Effect of salinity on the adaptive capacity of recombinant strains of Escherichia coli and Bacillus subtilis
Место публикации : Microbiology. - 2000. - Vol. 69, Is. 2. - С. 196-199. - ISSN 00262617 (ISSN)
Ключевые слова (''Своб.индексиров.''): genetically modified microorganisms--salinity--salt resistance
Аннотация: The effect of different concentrations of salts on natural and recombinant strains of Bacillus subtilis and Escherichia coli was studied. The recombinant strain of B. subtilis was found to be more osmotolerant than the wild-type strain of this bacterium, whereas the opposite situation was observed for the recombinant and wild-type strains of E. coli. Some salts exerted a bacteriostatic effect on E. coli and B. subtilis. The adaptive capacity of recombinant strains depended on the number of plasmid copies in the cells. The introduction of recombinant bacteria into model ecosystems resulted in the generation of their variants with increased osmotolerance. В© 2000 MAIK "Nauka/Interperiodica".
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhila N.O., Kalacheva G.S., Volova T.G.
Заглавие : Effect of salinity on the biochemical composition of the alga Botryococcus braunii Kutz IPPAS H-252
Место публикации : Journal of Applied Phycology. - 2011. - Vol. 23, Is. 1. - С. 47-52. - ISSN 09218971 (ISSN) , DOI 10.1007/s10811-010-9532-8
Ключевые слова (''Своб.индексиров.''): botryococcus--fatty acid composition--lipid content--salinity--algae--botryococcus--botryococcus braunii
Аннотация: The effect of 0.3 and 0.7 M NaCl on biomass yield, total nitrogen content, intracellular lipid content, and fatty acid profile of the lipids of the alga Botryococcus braunii IPPAS H-252 in different phases of the culture cycle was studied. The presence of sodium chloride in the medium inhibited the growth of algal cells for the first 3 days of the experiment, causing a decrease in total nitrogen, enhanced synthesis of triacylglycerols, and considerable changes in the lipid fatty acid profile: decreases in polyenoic acid contents (from 68.34% to 29.38% and 12.8%) and proportions of long-chain saturated acids (from 0.53% to 5.3% and 14.13% of the total fatty acids) at 0.3 M NaCl and 0.7 M NaCl, respectively. In later phases of the culture, at 0.3 M NaCl, the content of polyenoic acids rose to the values characteristic of the active growth phase of this alga. At 0.7 M NaCl, the proportion of polyenoic acids grew less significantly, but biomass concentration and total nitrogen increased, similarly to the experiment with 0.3 M NaCl. В© 2010 Springer Science+Business Media B.V.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovskii A.Y., Zotina T.A.
Заглавие : Effect of salinity on the growth of the cyanobacterium Spirulina platensis in monoculture and mixed cultures
Место публикации : Microbiology: MAIK NAUKA/INTERPERIODICA, 1996. - Vol. 65, Is. 3. - С. 371-372. - 2. - ISSN 0026-2617
Примечания : Cited References: 5
Аннотация: The effect of NaCl concentrations on the growth of the cyanobacterium Spirulina platensis in monoculture and in mixed culture with the green halophilic alga Dunaliella salina was studied. The,growth rate of S. platensis in monoculture did not change within the salinity range from 1 to 20 g/l NaCl. With an increase in salinity, the growth rate declined, and, at 70 g/l NaCl, the cyanobacteria died. The response of S. platensis to changes in salinity in mixed culture with D. salina did not differ from that observed in monoculture. At a concentration of 50 g/l NaCl these species of microorganisms could coexist.
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16.

Вид документа : Статья из сборника (выпуск монографической серии)
Шифр издания :
Автор(ы) : Kononova N. A., Pisman, T., I, Shevyrnogov A. P.
Заглавие : Effect of soil salinization on the productivity of pasture in the arid land
Колич.характеристики :5 с
Место публикации : IOP Conf. Ser. Earth Envir. Sci.: IOP PUBLISHING LTD, 2020. - Vol. 548: 3rd International Conference on Agribusiness, Environmental Engineering (JUN 18-20, 2020, Krasnoyarsk, RUSSIA). - Ст.072063. - (IOP Conference Series-Earth and Environmental Science). - , DOI 10.1088/1755-1315/548/7/072063
Примечания : Cited References:15
Предметные рубрики: PLANT
MARSH
Аннотация: This study compares the field data of the seasonal dynamics of halophytic plant productivity as dependent upon soil salinity level and soil type. The field study was carried out in the coastal area of Lake Kurinka (the Republic of Khakasia, south of Middle Siberia) between May and September of 2014 and 2016. Two plant communities with different soil salinity levels were studied. Results of the field investigation show that there is a correlation between plant growth and the soil salinity level. With high-salinity (3.72%) soils, the productivity of halophyte plants is lower than productivity with low-salinity (0.175%) soils.
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17.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Kononova N. A., Pisman T. I., Shevyrnogov A. P.
Заглавие : Effect of soil salinization on the productivity of pasture in the arid land
Место публикации : IOP Conference Series: Earth and Environmental Science: IOP Publishing Ltd, 2020. - Vol. 548: 3rd International Conference on Agribusiness, Environmental Engineering and Biotechnologies, AGRITECH-III 2020 (18 June 2020 through 20 June 2020, ) Conference code: 162670, Is. 7. - Ст.072063. - , DOI 10.1088/1755-1315/548/7/072063
Аннотация: This study compares the field data of the seasonal dynamics of halophytic plant productivity as dependent upon soil salinity level and soil type. The field study was carried out in the coastal area of Lake Kurinka (the Republic of Khakasia, south of Middle Siberia) between May and September of 2014 and 2016. Two plant communities with different soil salinity levels were studied. Results of the field investigation show that there is a correlation between plant growth and the soil salinity level. With high-salinity (3.72%) soils, the productivity of halophyte plants is lower than productivity with low-salinity (0.175%) soils. © Published under licence by IOP Publishing Ltd.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirova N. A., Ushakova S. A., Shklavtsova E. S., Anishchenko O. V., Mikheeva Y. A., Tikhomirov A. A.
Заглавие : Effects of PAR intensity and NaCl concentration on growth of Salicornia europaea plants as relevant to artificial ecological systems
Место публикации : Russ. J. Plant Physiol. - 2016. - Vol. 63, Is. 4. - С. 474-482. - ISSN 10214437 (ISSN) , DOI 10.1134/S1021443716040154
Ключевые слова (''Своб.индексиров.''): artificial ecosystems--co2 exchange--macroelements--mda--nacl salinity--par intensity--photosynthetic pigments--productivity--salicornia europaea
Аннотация: Effects of variable levels of photosynthetically active radiation (PAR) and NaCl concentrations, typical of closed ecological life support systems, on growth of Salicornia europaea L. plants, CO2 exchange, mineral composition, and the content of malondialdehyde (MDA) and photosynthetic pigments were investigated. The plants were grown for 25 days at different salinities of nutrient Knop solution (171, 342, and 513 mM NaCl) under two PAR levels (690 and 1150 ?mol/(m2 s)). At PAR of 690 ?mol/(m2 s), the plant productivity did not show significant changes at increasing salinities; at 1150 ?mol/(m2 s), the maximal productivity was observed at NaCl concentrations of 171 and 342 mM. The increase in NaCl concentration from 171 to 513 mM in the nutrient solution led to a substantial increase in the relative Na content in aboveground organs at PAR level of 1150 ?mol/(m2 s). The MDA content in aboveground organs by the end of the growth period was independent of PAR intensity. The content of photosynthetic pigments in the assimilatory tissue decreased with the increase in salinity from 342 to 513 mM NaCl at PAR level of 1150 ?mol/(m2 s) but not at the lower irradiance. The combination of 1150 ?mol/(m2 s) PAR intensity with the salinity as high as 342 mM NaCl was found to be the most effective for optimal productivity of S. europaea plants. © 2016, Pleiades Publishing, Ltd.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tolomeev A.P., Sushchik N.N., Gulati R.D., Makhutova O.N., Kalacheva G.S., Zotina T.A.
Заглавие : Feeding spectra of Arctodiaptomus salinus (Calanoida, Copepoda) using fatty acid trophic markers in seston food in two salt lakes in South Siberia (Khakasia, Russia)
Место публикации : Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - С. 513-530. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-010-9331-y
Ключевые слова (''Своб.индексиров.''): arctodiaptomus salinus--brackish lakes--fatty acids--feeding spectra--salinity adaptation--adaptation--bacterium--brackish water--ciliate--comparative study--crustacean--cyanobacterium--fatty acid--feeding behavior--flagellate--food selection--green alga--lipid--physicochemical property--picoplankton--saline lake--salinity--seasonality--seston--khakassia--russian federation--siberia--animalia--arctodiaptomus salinus--bacillariophyta--bacteria (microorganisms)--calanoida--chlorophyta--ciliophora--copepoda--cryptomonas--cryptophyta--cyanobacteria--mastigophora (flagellates)--proteobacteria
Аннотация: During two vegetation seasons (2004-2005), we compared feeding spectra of Arctodiaptomus salinus (Calanoida, Copepoda) populations inhabiting two neighboring salt lakes, Shira and Shunet, Khakasia, Russia, using fatty acid (FA) trophic markers. Sestonic FA composition in two lakes moderately differed, whereas levels of diatom FA markers were higher in Lake Shunet and of Cyanobacteria and green algae markers in Lake Shira. In general, markers in storage lipids-triacylglycerols (TAG) of A. salinus-reflected the differences in sestonic composition of the two lakes. Nevertheless, TAG fraction was also enriched by FA trophic markers of the minor components of seston, which were selectively ingested by the animals. In Lake Shira, A. salinus had significantly higher concentrations of bacterial FA markers in TAG. In Lake Shunet, TAG of A. salinus contained significantly higher relative amounts of 18:4?3, 18:5?3 and C22 polyunsaturated fatty acids (PUFA), which indicated marked contribution of cryptophytes or (and) flagellates into the diet. Laboratory experiments showed feeding on Cryptomonas and sulfur purple bacteria in Lake Shunet and ciliates and colonial picoplankton in both lakes, and generally confirmed the differences in FA trophic markers in A. salinus between the lakes. The two populations of A. salinus markedly differed in levels of essential long-chain PUFA, eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, although the levels of these FA in seston were quite similar between the two lakes. The higher levels of the essential ?3 PUFA in A. salinus in Lake Shunet may be an adaptive response of the animals to a vertical stratification of physico-chemical conditions and significantly higher salinity levels at the boundary of adjacent bottom layer in this lake. В© 2010 Springer Science+Business Media B.V.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lobova T.I., Maksimova E.Ye., Popova L.Yu., Pechurkin N.S.
Заглавие : Geographical and seasonal distribution of multiple antibiotic resistance of heterotrophic bacteria of Lake Shira
Место публикации : Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - С. 299-307. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1015618820450
Ключевые слова (''Своб.индексиров.''): ampicillin--brackish lake--halotolerance--heterotrophic bacteria--horizontal gene transfer--kanamycin--multiple antibiotic resistance--antibiotics--bacterium--drug resistance--geographical distribution--saline lake--salinity tolerance--seasonal variation--russian federation--bacteria (microorganisms)
Аннотация: From 1996 to 1999 heterotrophic bacteria of the brackish-water Lake Shira (Republic of Khakasia, Russia) were studied to understand the seasonal dynamics of their antibiotic resistance. During the winter, these bacteria were represented primarily by forms that could not be cultured and were psychrotolerant. In the summer period, heterotrophic, mesophilic bacteria increased in number. The percentages of isolates with multiple, antibiotic resistance isolated from the lake region near the resort area of the lake were 2-3 times higher than those from the central part of the lake. A decline in the bacterial numbers with multiple antibiotic resistance was observed during the cold period (February-March). Various mechanisms of multiple, antibiotic resistance of heterotrophic bacteria isolated from Shira lake are discussed.
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