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Микробное сообщество хемоклина меромиктического озера Шунет (Хакасия, Россия) в период летней стратификации [Текст] : научное издание / Д. Ю. Рогозин [и др.] // Микробиология. - 2010. - Т. 79, № 2. - С. 277-285 . - ISSN 0026-3656

ГРНТИ

34.35.33

Рубрики:
Гидробиология--Солоноватые меромиктические озера
Микробиология
Кл.слова (ненормированные):
хемоклин -- бактериальное сообщество -- меромиктическое озеро -- пурпурные серные бактерии -- зеленые серные бактерии -- цианобактерии -- фитофлагелляты
Аннотация: Пространственно-временная оргaнизация бактериального сообщества хемоклина стратифицированного меромиктического озера Шунет (Республика Хакасия, Россия) была исследована в период с мая по сентябрь 2005 г. с помощью микрокопии, анализа фотосинтетических пигментов и методом ПЦР/ДГГЭ с последующим секвенированием фрагментов 16S рДНК. Образцы отбирали с помощью многошприцевого пробоотборника с шагом 5 см по глубине. Показано, что в исследованный период существенных изменений в бактериальном сообществе хeмоклина не происходило, по крайней мере, среди распознаваемых форм. Во все даты исследований в хемоклине доминировали пурпурные серные бактерии, родственные Lamprocystis purpurea (Chromatiaceae). Показано, что с применением универсальных бактериальных праймеров метод ДГГЭ дает ту же качественную картину распределения доминирующих видов, что и микроскопия. Россия, Инт- биофизики СО РАН, Красноярск (E-mail:rogozin@ibp.ru)

Держатели документа:
Институт биофизики СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Рогозин, Денис Юрьевич; Трусова, Мария Юрьевна; Хромечек, Е.Б.; Дегерменджи, Андрей Георгиевич

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Ecology of purple sulfur bacteria in the highly stratified meromictic Lake Shunet (Siberia, Khakassia) in 2002-2009 / D. Y. Rogozin, V. V. Zykov, A. G. Degermendzhi // Microbiology (Russian Federation). - 2012. - Vol. 81, Is. 6. - P727-735, DOI 10.1134/S0026261712060148 . - ISSN 0026-2617
Кл.слова (ненормированные):
bacteriochlorophyll a -- chemocline -- meromictic lake -- purple sulfur bacteria -- seasonal dynamics -- Bacteria (microorganisms) -- Chromatiaceae
Аннотация: Phototrophic sulfur bacteria form dense accumulations in the chemocline zones of stratified lakes where light reaches the sulfide-containing layers of water. Many works are dedicated to the ecophysiology of these microorganisms in meromictic lakes. However, the role of these microorganisms in the trophic network of these ecosystems, the ways of biomass utilization, and the contribution to the turnover of biogenic elements have so far been insufficiently understood. This work deals with the analysis of many years' seasonal dynamics of the biomass of purple sulfur bacteria and the physicochemical conditions of their environment in Lake Shunet (Siberia, Khakassia, Russia), unraveling the causes of their anomalous development in the chemocline of this lake, as well as the comparative analysis of such type of ecosystems. Lake Shunet is characterized by markedly pronounced stratification and the high density of purple sulfur bacteria (PSB) in the chemocline, which is comparable to that of Lake Mahoney (Canada) where the number of PSB is the greatest among those known in the world. It was shown that, in the period 2002-2009, the total amount of bacterio-chlorophyll a in the water column of Lake Shunet increased and did not correlate with the seasonal variations in temperature and illumination in the chemocline. It was established that PSB cells in the purple layer experienced the effect of self-shading. The sedimentation rate of purple sulfur bacteria in Lake Shunet was low due to the pronounced density gradient in the chemocline zone. Thus, the high number of PSB in the chemocline was due to the combination of strong illumination, a high sulfide concentration, and a high water density gradient, which was responsible for stable stratification and contributed to the accumulation of the cells in a narrow layer. The data obtained could be useful for the paleoreconstruction of climatically deter-mined changes in the level of the lake and its periods of meromixis by the presence of carotenoids and bacte-riochlorophylls in the bottom sediments. В© 2012 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rogozin, D.Y.; Zykov, V.V.; Degermendzhi, A.G.

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Microbiological and isotopic-geochemical investigations of meromictic lakes in Khakasia in winter / A. S. Savvichev [и др.] // Mikrobiologiya. - 2005. - Vol. 74, Is. 4. - С. 552-561 . - ISSN 0026-3656
Кл.слова (ненормированные):
Meromictic water bodies -- Microbial production and oxidation of methane -- Photosynthesis -- Stable isotopes of carbon (? 13C) and sulfur (? 34S) -- Sulfate reduction -- Bacteria (microorganisms) -- Chlorobi -- Chromatiaceae -- Lamprocystis purpurea -- Pelodictyon luteolum -- Photobacteria -- carbon -- fresh water -- methane -- sulfate -- sulfur -- article -- bacterial phenomena and functions -- bacterium -- comparative study -- isolation and purification -- metabolism -- microbiology -- oxidation reduction reaction -- photosynthesis -- Russian Federation -- season -- species difference -- Bacteria -- Bacterial Physiology -- Carbon Isotopes -- Fresh Water -- Methane -- Oxidation-Reduction -- Photosynthesis -- Seasons -- Siberia -- Species Specificity -- Sulfates -- Sulfur Isotopes -- Water Microbiology
Аннотация: Microbiological and isotopic-geochemical investigations of the brackish meromictic lakes Shira and Shunet were performed in the steppe region of Khakasia in winter. Measurements made with a submersed sensor demonstrated that one-meter ice transmits light in a quantity sufficient for oxygenic and anoxygenic photosynthesis. As in the summer season, in the community of phototrophic bacteria found in Lake Shira, the purple sulfur bacteria Amoebobacter purpureus dominated, whereas, in Lake Shunet, the green sulfur bacteria Pelodictyon luteolum were predominant. Photosynthetic production, measured using the radioisotopic method, was several times lower than that in summer. The rates of sulfate reduction and production and oxidation of methane in the water column and bottom sediments were also lower than those recorded in summer. The process of anaerobic methane oxidation in the sediments was an exception, being more intense in winter than in summer. The data from radioisotopic measurements of the rates of microbial processes correlate well with the results of determination of the isotopic composition of organic and mineral carbon (? 13C) and hydrogen sulfide and sulfate (? 34S) and suggest considerable seasonal variations in the activity of the microbial community in the water bodies investigated.

Scopus
Держатели документа:
Winogradsky Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya, Moscow, 117811, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 36, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Savvichev, A.S.; Rusanov, I.I.; Rogozin, D.Yu.; Zakharova, E.E.; Lunina, O.N.; Bryantseva, I.A.; Yusupov, S.K.; Pimenov, N.V.; Degermendzhi, A.G.; Ivanov, M.V.

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Microbiological and isotopic-geochemical investigations of meromictic lakes in Khakasia in winter / A. S. Savvichev [et al.] // Microbiology. - 2005. - Vol. 74, Is. 4. - P477-485, DOI 10.1007/s11021-005-0092-x . - ISSN 0026-2617
Кл.слова (ненормированные):
Meromictic water bodies -- Microbial production and oxidation of methane -- Photosynthesis -- Stable isotopes of carbon (?13C) and sulfur (?34S) -- Sulfate reduction -- Chlorobi -- Chromatiaceae -- Lamprocystis purpurea -- Pelodictyon luteolum -- Photobacteria
Аннотация: Microbiological and isotopic-geochemical investigations of the brackish meromictic lakes Shira and Shunet were performed in the steppe region of Khakasia in winter. Measurements made with a submersed sensor demonstrated that one-meter ice transmits light in a quantity sufficient for oxygenic and anoxygenic photosynthesis. As in the summer season, in the community of phototrophic bacteria found in Lake Shira, the purple sulfur bacteria Amoebobacter purpureus dominated, whereas, in Lake Shunet, the green sulfur bacteria Pelodictyon luteolum were predominant. Photosynthetic production, measured using the radioisotopic method, was several times lower than that in summer. The rates of sulfate reduction and production and oxidation of methane in the water column and bottom sediments were also lower than those recorded in summer. The process of anaerobic methane oxidation in the sediments was an exception, being more intense in winter than in summer. The data from radioisotopic measurements of the rates of microbial processes correlate well with the results of determination of the isotopic composition of organic and mineral carbon (?13C) and hydrogen sulfide and sulfate (?34S) and suggest considerable seasonal variations in the activity of the microbial community in the water bodies investigated. В© 2005 Pleiades Publishing, Inc.

Scopus
Держатели документа:
Winogradsky Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya, Moscow, 117312, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 36, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Savvichev, A.S.; Rusanov, I.I.; Rogozin, D.Yu.; Zakharova, E.E.; Lunina, O.N.; Bryantseva, I.A.; Yusupov, S.K.; Pimenov, N.V.; Degermendzhi, A.G.; Ivanov, M.V.

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Microbial community of the chemocline of the meromictic Lake Shunet (Khakassia, Russia) during summer stratification / D. Y. Rogozin [et al.] // Microbiology. - 2010. - Vol. 79, Is. 2. - P253-261, DOI 10.1134/S0026261710020189 . - ISSN 0026-2617
Кл.слова (ненормированные):
Chemocline -- Cyanobacteria -- Green sulfur bacteria -- Meromictic lakes -- Microstratification -- PCR-DGGE -- Phytoflagellates -- Purple sulfur bacteria -- Bacteria (microorganisms) -- Chlorobi -- Chromatiaceae -- Cryptomonas -- Cyanobacteria -- Lamprocystis purpurea -- Phytomastigophorea -- Proteobacteria -- Synechococcus
Аннотация: The spatio-temporal organization of the bacterial community inhabiting the chemocline of the stratified meromictic Lake Shunet (Khakassia, Russia) was investigated from May to September 2005 by means of microscopy, analysis of photosynthetic pigments, and PCR-DGGE with subsequent 16S rDNA analysis. The samples were collected with a multisyringe stratification sampler, sampling being performed every 5 cm. It was demonstrated that, during the period of investigation, there were no large changes in the bacterial community of the chlemocline, at least among the detected forms. During the whole period of study, purple sulfur bacteria related to Lamprocystis purpurea (Chromatiaceae) were predominant in the chemocline. Beneath the layer of purple bacteria, green sulfur bacteria were revealed that were phylogenetically distant from strain ShNPel02, which was previously isolated from this lake. Development of phytoflagellates of the genus Cryptomonas was observed in the upper zone of the chemocline. In the chemocline of Lake Shunet, the numbers of picoplankton cyanobacteria of the genus Synechococcus increased from May to September. It was demonstrated that the application of universal bacterial primers for DGGE resulted in the same qualitative distributional pattern of predominant species as microscopic studies. В© Pleiades Publishing, Ltd., 2010.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobodnyi, 79, Krasnoyarsk 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rogozin, D.Y.; Trusova, M.Y.; Khromechek, E.B.; Degermendzhy, A.G.

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Thin-layer vertical distributions of purple sulfur bacteria in chemocline zones of meromictic lakes Shira and Shunet (Khakassia) / D. Yu. Rogozin [et al.] // Doklady Biological Sciences. - 2005. - Vol. 400, Is. 1-6. - P54-56, DOI 10.1007/s10630-005-0042-9 . - ISSN 0012-4966
Кл.слова (ненормированные):
Bacteria (microorganisms) -- Chromatiaceae

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Vinogradskii Inst. of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, Moscow, 117312, Russian Federation
Papanin Inst. Biol. of Inland Waters, Russian Academy of Sciences, Yaroslavl'Oblast, 152742, Russian Federation
Department of Biophysics, Krasnoyarsk State University, pr. Svobodnyi 79, Krasnoyarsk, 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rogozin, D.Yu.; Pimenov, N.V.; Kosolapov, D.B.; Chan'kovskaya, Yu.V.; Degermendzhy, A.G.

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Anoxygenic phototrophic bacterial community of Lake Shira (Khakassia) / O. N. Lunina [et al.] // Microbiology. - 2007. - Vol. 76, Is. 4. - P469-479, DOI 10.1134/S0026261707040133 . - ISSN 0026-2617
Кл.слова (ненормированные):
Anoxygenic photosynthesis -- Anoxygenic phototrophic bacteria -- Meromictic brackish lakes -- Ahrensia kielensis -- Bacteria (microorganisms) -- Chlorobi -- Chlorobium -- Chlorobium limicola -- Chromatiaceae -- Lamprocystis purpurea -- Photobacteria -- Proteobacteria -- Rhodomicrobium -- Rhodovulum -- Rhodovulum strictum -- Thiocapsa roseopersicina
Аннотация: The anoxygenic phototrophic bacterial community of the brackish meromictic Lake Shira (Khakassia) was investigated in August 2001, July 2002, and February-March 2003. In all the periods of investigation, the prevailing microorganisms were purple sulfur bacteria similar to Lamprocystis purpurea in morphology and pigment composition. Their highest number (3 ? 10 5 cells/ml) was recorded in July 2002 at the depth of 15 m. According to 16S rRNA gene analysis, the strain of purple sulfur bacteria isolated in 2001 and designated ShAm01 exhibited 98.6% similarity to the type strain of Thiocapsa roseopersicina and 97.1-94.4% similarity to the type strains of Tca. pendens, Tca. litoralis, and Tca. rosea. The minor microorganisms of the anoxygenic phototrophic bacterial community within the period of investigation were nonsulfur purple bacteria phylogenetically close to Rhodovulum strictum (98.3% similarity, strain ShRb01), Ahrensia kielensis (of 93.9% similarity, strain ShRb02), Rhodomicrobium vannieli (of 99.7% similarity, strain ShRmc01), and green sulfur bacteria, phylogenetically close to Chlorobium limicola (of 98.7% similarity, strain ShCl03). В© 2007 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Winogradsky Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312, Russian Federation
Skryabin Institute of Microbial Biochemistry and Physiology, Russian Academy of Sciences, Pushchino
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lunina, O.N.; Bryantseva, I.A.; Akimov, V.N.; Rusanov, I.I.; Barinova, E.S.; Lysenko, A.M.; Rogozin, D.Yu.; Pimenov, N.V.

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Seasonal changes in the structure of the anoxygenic photosynthetic bacterial community in Lake Shunet, Khakassia / O. N. Lunina [et al.] // Microbiology. - 2007. - Vol. 76, Is. 3. - P368-379, DOI 10.1134/S0026261707030149 . - ISSN 0026-2617
Кл.слова (ненормированные):
Anoxygenic photosynthesis -- Eutrophic meromictic saline lakes -- Green sulfur phototrophic bacteria -- Purple nonsulfur phototrophic bacteria -- Purple sulfur phototrophic bacteria -- Bacteria (microorganisms) -- Chlorobi -- Chromatiaceae -- Halochromatium -- Photobacteria -- Prosthecochloris vibrioformis -- Proteobacteria -- Rhodospirillaceae -- Rhodovulum -- Rhodovulum euryhalinum -- Thiocapsa
Аннотация: Seasonal studies of the anoxygenic phototrophic bacterial community of the water column of the saline eutrophic meromictic Lake Shunet (Khakassia) were performed in 2002 (June) and 2003 (February-March and August). From the redox zone down, the lake water was of dark green color. Green sulfur bacteria predominated in every season. The maximum number of green sulfur bacteria was 107 cells/ml in summer and 106 cells/ml in winter. A multi-syringe stratification sampler was applied for the study of the fine vertical distribution of phototrophs in August 2003; the sampling was performed every 5 cm. A 5-cm-thick pink-colored water layer inhabited by purple sulfur bacteria was shown to be located above the layer of green bacteria. The species composition and ratio of purple bacterial species depended on the sampling depth and on the season. In summer, the number of purple sulfur bacteria in the layer of pink water was 1.6 ? 108 cells/ml. Their number in winter was 3 ? 105 cells/ml. In the upper oxygen-containing layer of the chemocline the cells of purple nonsulfur bacteria were detected in summer. The maximum number of nonsulfur purple bacteria, 5 ? 102 cells/ml, was recorded in August 2003. According to the results of the phylogenetic analysis of pure cultures of the isolated phototrophic bacteria, which were based on 16S rDNA sequencing, green sulfur bacteria were close to Prosthecochloris vibrioformis, purple sulfur bacteria, to Thiocapsa and Halochromatium species, and purple nonsulfur bacteria, to Rhodovulum euryhalinum and Pinkicyclus mahoneyensis. В© Nauka/Interperiodica 2007.

Scopus
Держатели документа:
Winogradsky Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312, Russian Federation
Skryabin Institute of Microbial Biochemistry and Physiology, Russian Academy of Sciences, Puschino, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lunina, O.N.; Bryantseva, I.A.; Akimov, V.N.; Rusanov, I.I.; Rogozin, D.Yu.; Barinova, E.S.; Lysenko, A.M.; Pimenov, N.V.

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Microbial processes of the carbon and sulfur cycles in Lake Shira (Khakasia) / N. V. Pimenov [и др.] // Mikrobiologiya. - 2003. - Vol. 72, Is. 2. - С. 259-267 . - ISSN 0026-3656
Кл.слова (ненормированные):
Anoxygenic photosynthesis -- Lake Shira -- Production and oxidation of methane -- Purple sulfur bacteria -- Sulfate reduction -- Bacteria (microorganisms) -- Chromatiaceae -- Lamprocystis -- Proteobacteria -- Thiocapsa -- carbon -- fresh water -- methane -- sulfate -- sulfur -- article -- Chromatiaceae -- comparative study -- metabolism -- microbiology -- oxidation reduction reaction -- photosynthesis -- Russian Federation -- Carbon -- Chromatiaceae -- Fresh Water -- Methane -- Oxidation-Reduction -- Photosynthesis -- Russia -- Sulfates -- Sulfur
Аннотация: Microbiological and biogeochemical studies of the meromictic saline Lake Shira (Khakasia) were conducted. In the upper part of the hydrogen-sulfide zone, at a depth of 13.5-14 m, there was a pale pink layer of water due to the development of purple bacteria (6 ? 10 5 cells/ml), which were assigned by their morphological and spectral characteristics to Lamprocystis purpureus (formerly Amoebobacter purpurea). In August, the production of organic matter (OM) in Lake Shira was estimated to be 943 mg C/(m 2 day). The contribution of anoxygenic photosynthesis was insignificant (about 7% of the total OM production). The share of bacterial chemosynthesis was still less (no more than 2%). In the anaerobic zone, the community of sulfate-reducing bacteria played a decisive role in the terminal decomposition of OM. The maximal rates of sulfate reduction were observed in the near-bottom water (114 ?g S/(1 day)) and in the surface layer of bottom sediments (901 ?g S/(dm 3 day)). The daily expenditure of C org for sulfate reduction was 73% of C org formed daily in the processes of oxygenic and anoxygenic photosynthesis and bacterial chemosynthesis. The profile of methane distribution in the water column and bottom sediments was typical of meromictic reservoirs. The methane content in the water column increased beginning with the thermocline (7-8 m), and reached maximum values in the near-bottom water (17 ?l/l). In bottom sediments, the greatest methane concentrations (57 ?l/l) were observed in the surface layer (0-3 cm). The integral rate of methane formation in the water column and bottom sediments was almost an order of magnitude higher than the rate of its oxidation by aerobic and anaerobic methanotrophic microorganisms.

Scopus
Держатели документа:
Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312, Russian Federation
Tomsk State University, Tomsk, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pimenov, N.V.; Rusanov, I.I.; Karnachuk, O.V.; Rogozin, D.Yu.; Bryantseva, I.A.; Lunina, O.N.; Yusupov, S.K.; Parnachev, V.P.; Ivanov, M.V.

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10.

Microbial processes of the carbon and sulfur cycles in Lake Shira (Khakasia) / N. V. Pimenov [et al.] // Microbiology. - 2003. - Vol. 72, Is. 2. - P221-229, DOI 10.1023/A:1023228316838 . - ISSN 0026-2617
Кл.слова (ненормированные):
Anoxygenic photosynthesis -- Lake Shira -- Production and oxidation of methane -- Purple sulfur bacteria -- Sulfate reduction -- Bacteria (microorganisms) -- Chromatiaceae -- Lamprocystis purpurea -- Proteobacteria -- Thiocapsa
Аннотация: Microbiological and biogeochemical studies of the meromictic saline Lake Shira (Khakasia) were conducted. In the upper part of the hydrogen-sulfide zone, at a depth of 13.5-14 m, there was a pale pink layer of water due to the development of purple bacteria (6 ? 105 cells/ml), which were assigned by their morphological and spectral characteristics to Lamprocystis purpurea (formerly Amoebobacter purpureus). In August, the production of organic matter (OM) in Lake Shira was estimated to be 943 mg C/(m2 day). The contribution of anoxygenic photosynthesis was insignificant (about 7% of the total OM production). The share of bacterial chemosynthesis was still less (no more than 2%). In the anaerobic zone, the community of sulfate-reducing bacteria played a decisive role in the terminal decomposition of OM. The maximal rates of sulfate reduction were observed in the near-bottom water (114 ?g S/(1 day)) and in the surface layer of bottom sediments (901 ?g S/(dm3 day)). The daily expenditure of Corg for sulfate reduction was 73% of Corg formed daily in the processes of oxygenic and anoxygenic photosynthesis and bacterial chemosynthesis. The profile of methane distribution in the water column and bottom sediments was typical of meromictic reservoirs. The methane content in the water column increased beginning with the thermocline (7-8 m) and reached maximum values in the near-bottom water (17 ?l/l). In bottom sediments, the greatest methane concentrations (57 ?l/l) were observed in the surface layer (0-3 cm). The integral rate of methane formation in the water column and bottom sediments was almost an order of magnitude higher than the rate of its oxidation by aerobic and anaerobic methanotrophic microorganisms.

Scopus
Держатели документа:
Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312, Russian Federation
Tomsk State University, Tomsk, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pimenov, N.V.; Rusanov, I.I.; Karnachuk, O.V.; Rogozin, D.Yu.; Bryantseva, I.A.; Lunina, O.N.; Yusupov, S.K.; Parnachev, V.P.; Ivanov, M.V.

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