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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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A one-dimensional model of vertical stratification of Lake Shira focussed on winter conditions and ice cover / S. N. Genova [et al.] // Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - P571-584, DOI 10.1007/s10452-010-9327-7 . - ISSN 1386-2588
Кл.слова (ненормированные):
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.

Scopus
Держатели документа:
Institute of Computational Modeling SB RAS, Akademgorodok 50/44, Krasnoyarsk 660036, Russian Federation
Krasnoyarsk, Siberian Federal University, Institute of Mathematics, Svobodny 79, Krasnoyarsk 660041, Russian Federation
Institute of Biophysics SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Federal University, Institute of Mathematics, Svobodny 79, Krasnoyarsk 660041, Russian Federation
Netherlands Institute of Ecology, Center for Limnology, Rijksstraatweg 6, Nieuwersluis 3631 AC, Netherlands : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Genova, S.N.; Belolipetskii, V.M.; Rogozin, D.Y.; Degermendzhy, A.G.; Mooij, W.M.

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A general one-dimensional vertical ecosystem model of Lake Shira (Russia, Khakasia): Description, parametrization and analysis / I. G. Prokopkin [et al.] // Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - P585-618, DOI 10.1007/s10452-010-9326-8 . - ISSN 1386-2588
Кл.слова (ненормированные):
Meromictic brackish lake -- One-dimensional vertical ecological model -- Sensitivity analysis -- alga -- biomass -- brackish water -- diffusion -- ecosystem modeling -- meromictic lake -- microbial community -- model test -- nutrient -- one-dimensional modeling -- parameterization -- phytoplankton -- seasonality -- sensitivity analysis -- solar radiation -- vertical profile -- water chemistry -- water temperature -- zooplankton -- Khakassia -- Lake Shira -- Russian Federation -- algae
Аннотация: A one-dimensional ecological model of the meromictic brackish Lake Shira (Russia, Khakasia) was developed. The model incorporates state-of-the-art knowledge about the functioning of the lake ecosystem using the most recent field observations and ideas from PCLake, a general ecosystem model of shallow freshwater lakes. The model of Lake Shira presented here takes into account the vertical dynamics of biomasses of the main species of algae, zooplankton and microbial community, as well as the dynamics of oxygen, detritus, nutrients and hydrogen sulphide from spring to autumn. Solar radiation, temperature and diffusion are modelled using real meteorological data. The parameters of the model were calibrated to the field data, after applying different methods of sensitivity analysis to the model. The resulting patterns of phytoplankton and nutrients dynamics show a good qualitative and quantitative agreement with the field observations during the whole summer season. Results are less satisfactory with respect to the vertical distribution of zooplankton biomass. We hypothesize that this is due to the fact that the current model does not take the sex and age structure of zooplankton into account. The dynamics of oxygen, hydrogen sulphide and the modelled positions of the chemocline and thermocline are again in good agreement with field data. This resemblance confirms the validity of the approach we took in the model regarding the main physical, chemical and ecological processes. This general model opens the way for checking various hypotheses on the functioning of the Lake Shira ecosystem in future investigations and for analysing options for management of this economically important lake. В© 2010 Springer Science+Business Media B.V.

Scopus
Держатели документа:
Institute of Biophysics, Akademgorodok, 660036 Krasnoyarsk, Russian Federation
Netherlands Institute of Ecology, Centre for Limnology, Rijksstraatweg 6, 3631 AC Nieuwersluis, Netherlands
Netherlands Environmental Assessment Agency (PBL), Postbus 303, 3720 AH Bilthoven, Netherlands : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Prokopkin, I.G.; Mooij, W.M.; Janse, J.H.; Degermendzhy, A.G.

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Anoxygenic phototrophic bacteria in meromictic lakes of southern Siberia during the ice period: Spatial distributions and ecological conditions / D. Yu. Rogozin [et al.] // Doklady Biological Sciences. - 2009. - Vol. 424, Is. 1. - P63-67, DOI 10.1134/S0012496609010190 . - ISSN 0012-4966
Кл.слова (ненормированные):
fresh water -- anaerobic growth -- article -- environmental aspects and related phenomena -- history -- ice cover -- microbiology -- phototrophy -- Russian Federation -- season -- Anaerobiosis -- Ecological and Environmental Phenomena -- Fresh Water -- History, Ancient -- Ice Cover -- Phototrophic Processes -- Seasons -- Siberia -- Photobacteria

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk 66041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rogozin, D.Yu.; Zykov, V.V.; Chernetskii, M.Yu.; Degermendzhy, A.G.

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Efficiency of transfer of essential polyunsaturated fatty acids versus organic carbon from producers to consumers in a eutrophic reservoir / M. I. Gladyshev [et al.] // Oecologia. - 2011. - Vol. 165, Is. 2. - P521-531, DOI 10.1007/s00442-010-1843-6 . - ISSN 0029-8549
Кл.слова (ненормированные):
Phytoplankton -- Production -- PUFA -- Trophic level -- Zooplankton -- carbon -- fresh water -- unsaturated fatty acid -- biomass -- eutrophic environment -- fatty acid -- net primary production -- organic carbon -- paradigm shift -- phytoplankton -- reservoir -- secondary production -- trophic level -- zooplankton -- animal -- article -- eutrophication -- food chain -- functional food -- growth, development and aging -- metabolism -- phytoplankton -- season -- zooplankton -- Animals -- Carbon -- Eutrophication -- Fatty Acids, Unsaturated -- Food Chain -- Fresh Water -- Functional Food -- Phytoplankton -- Seasons -- Zooplankton -- Animalia
Аннотация: One of the central paradigms of ecology is that only about 10% of organic carbon production of one trophic level is incorporated into new biomass of organisms of the next trophic level. Many of energy-yielding compounds of carbon are designated as 'essential', because they cannot be synthesized de novo by consumers and must be obtained with food, while they play important structural and regulatory functions. The question arises: are the essential compounds transferred through trophic chains with the same efficiency as bulk carbon? To answer this question, we measured gross primary production of phytoplankton and secondary production of zooplankton and content of organic carbon and essential polyunsaturated fatty acids of ?-3 family with 18-22 carbon atoms (PUFA) in the biomass of phytoplankton and zooplankton in a small eutrophic reservoir during two summers. Transfer efficiency between the two trophic levels, phytoplankton (producers) and zooplankton (consumers), was calculated as ratio of the primary production versus the secondary (zooplankton) production for both carbon and PUFA. We found that the essential PUFA were transferred from the producers to the primary consumers with about twice higher efficiency than bulk carbon. In contrast, polyunsaturated fatty acids with 16 carbon atoms, which are synthesized exclusively by phytoplankton, but are not essential for animals, had significantly lower transfer efficiency than both bulk carbon, and essential PUFA. Thus, the trophic pyramid concept, which implicitly implies that all the energy-yielding compounds of carbon are transferred from one trophic level to the next with the same efficiency of about on average 10%, should be specified for different carbon compounds. В© 2010 Springer-Verlag.

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

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Anishchenko, O.V.; Makhutova, O.N.; Kolmakov, V.I.; Kalachova, G.S.; Kolmakova, A.A.; Dubovskaya, O.P.

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Seasonal dynamics of the nutrition spectrum of Dreissena polymorpha in the Rybinsk Reservoir. / O. N. Makhutova [et al.] // Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections / translated from Russian. - 2008. - Vol. 423. - P453-456, DOI 10.1134/S0012496608060252 . - ISSN 0012-4966
Кл.слова (ненормированные):
fresh water -- animal -- animal food -- article -- Dreissena -- metabolism -- physiology -- Russian Federation -- season -- Animal Nutritional Physiological Phenomena -- Animals -- Dreissena -- Fresh Water -- Russia -- Seasons

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

Доп.точки доступа:
Makhutova, O.N.; Pryanichnikova, E.G.; Gladyshev, M.I.; Sushchik, N.N.

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Seasonal transfer of the pool of the essential eicosapentaenoic acid along the pelagic trophic chain of a eutrophic reservoir / N. N. Sushchik [et al.] // Doklady Biological Sciences. - 2008. - Vol. 422, Is. 1. - P355-356, DOI 10.1134/S0012496608050232 . - ISSN 0012-4966
Кл.слова (ненормированные):
fresh water -- icosapentaenoic acid -- article -- biomass -- metabolism -- microbiology -- phytoplankton -- population density -- river -- Russian Federation -- season -- Biomass -- Eicosapentaenoic Acid -- Fresh Water -- Phytoplankton -- Population Density -- Rivers -- Russia -- Seasons -- Water Microbiology

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Kransnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660062, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Sushchik, N.N.; Gladyshev, M.I.; Makhutova, O.N.; Kravchuk, E.S.; Dubovskaya, O.P.; Kalacheva, G.S.

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Dependence of the domination of Anabaena flos-aquae (Lyngb.) Breb. in the phytoplankton community on the initial abundance of akinetes / E. S. Kravchuk, M. I. Gladyshev, E. A. Ivanova // Doklady Biological Sciences. - 2007. - Vol. 416, Is. 1-6. - P377-378, DOI 10.1134/S0012496607050158 . - ISSN 0012-4966
Кл.слова (ненормированные):
Anabaena flos-aquae -- Anabaena -- animal -- article -- biological model -- biomass -- Cyanobacterium -- metabolism -- microbiology -- physiology -- phytoplankton -- Russian Federation -- season -- sediment -- Anabaena -- Animals -- Biomass -- Cyanobacteria -- Geologic Sediments -- Models, Biological -- Phytoplankton -- Russia -- Seasons -- Water Microbiology

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

Доп.точки доступа:
Kravchuk, E.S.; Gladyshev, M.I.; Ivanova, E.A.

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10.

Species composition of winter bacterioplankton in blooming and nonblooming reservoirs as determined by 16S rRNA sequences / M. Yu. Trusova, M. I. Gladyshev // Doklady Biological Sciences. - 2005. - Vol. 405, Is. 1-6. - P443-445, DOI 10.1007/s10630-005-0160-4 . - ISSN 0012-4966
Кл.слова (ненормированные):
fresh water -- RNA 16S -- article -- bacterium -- classification -- genetic variability -- genetics -- isolation and purification -- microbiology -- molecular genetics -- phylogeny -- plankton -- Russian Federation -- season -- species difference -- Bacteria -- Fresh Water -- Molecular Sequence Data -- Phylogeny -- Plankton -- RNA, Ribosomal, 16S -- Seasons -- Siberia -- Species Specificity -- Variation (Genetics) -- Water Microbiology

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, 660062, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Trusova, M.Yu.; Gladyshev, M.I.

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11.

Seasonal changes in the standing stock of essential polyunsaturated fatty acids in the biomass of phyto- and zoobenthos on a littoral station of the Yenisei River / M. I. Gladyshev [et al.] // Doklady Biological Sciences. - 2005. - Vol. 403, Is. 1-6. - P267-268, DOI 10.1007/s10630-005-0107-9 . - ISSN 0012-4966
Кл.слова (ненормированные):
essential fatty acid -- animal -- article -- lipid metabolism -- metabolism -- physiology -- phytoplankton -- river -- Russian Federation -- season -- zooplankton -- Animals -- Fatty Acids, Essential -- Lipid Metabolism -- Phytoplankton -- Rivers -- Seasons -- Siberia -- Zooplankton

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Agrarian University, Krasnoyarsk, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, 660062, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Kravchuk, E.S.; Ivanova, E.A.; Ageev, A.V.; Kalacheva, G.S.

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12.

Associating particulate essential fatty acids of the ?3 family with phytoplankton species composition in a Siberian reservoir / N. N. Sushchik [et al.] // Freshwater Biology. - 2004. - Vol. 49, Is. 9. - P1206-1219, DOI 10.1111/j.1365-2427.2004.01263.x . - ISSN 0046-5070
Кл.слова (ненормированные):
Cyanobacteria -- Diatoms -- Fatty acids -- Food quality -- Species composition -- cyanobacterium -- diatom -- fatty acid -- food quality -- food web -- growing season -- phytoplankton -- reservoir -- Eurasia -- Siberia -- Anabaena -- Anabaena flos-aquae -- Aphanizomenon -- Aphanizomenon flos-aquae -- Bacillariophyta -- Cyanobacteria -- Cyclotella -- Dinophyceae -- Flos -- Microcystis -- Microcystis aeruginosa -- Planktothrix -- Planktothrix agardhii -- Stephanodiscus
Аннотация: 1. We studied variation in the composition of fatty acids in the seston of a small freshwater reservoir with changes in phytoplankton composition during four growth seasons. We focused on the dynamics of the ?3 fatty acids because of their potential importance for zooplankton nutrition. 2. Total diatoms were related to the 20:5?3 fatty acid (eicosapentaenoic, EPA) content in seston. Among two dominant diatom genera, Cyclotella was not associated with EPA content. In contrast, there was a significant correlation between Stephanodiscus and the percentage contribution and content of EPA throughout the study. Hence, freshwater diatoms can differ strongly in content of the essential EPA. 3. We considered abundant cyanobacteria as a potential source of 18:3?3 fatty acid (linolenic, ALA) to aquatic food webs. Among four dominant cyanobacteria species, two (Anabaena flos-aquae and Planktothrix agardhii) showed significant correlation with the ALA content of the seston, while the other two (Aphanizomenon flos-aquae and Microcystis aeruginosa) did not. 4. Dinophyta had a relatively high level of 22:6?3 (docosahexaenoic, DHA) for freshwater species and can be also a source of EPA to aquatic food webs. 5. Our results show that various species of diatoms as well as cyanobacteria can be of contrasting nutritional value for zooplankton because of their different content of the essential PUFAs. Diatoms, which are low in EPA, could not be considered as a valuable food, while some field populations of cyanobacteria might be valuable sources of essential ALA.

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

Доп.точки доступа:
Sushchik, N.N.; Gladyshev, M.I.; Makhutova, O.N.; Kalachova, G.S.; Kravchuk, E.S.; Ivanova, E.A.

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13.

Seasonal dynamics of amino acids in two small Siberian reservoirs dominated by prokaryotic and eukaryotic phytoplankton / G. S. Kalachova [et al.] // Aquatic Ecology. - 2004. - Vol. 38, Is. 1. - P3-15, DOI 10.1023/B:AECO.0000021044.55658.71 . - ISSN 1386-2588
Кл.слова (ненормированные):
Amino acids -- Blooms -- Cyanobacteria -- Phytoplankton -- amino acid -- biomass -- phytoplankton -- reservoir -- seasonal variation -- Eurasia -- Siberia -- Cyanobacteria -- Eukaryota -- Prokaryota
Аннотация: The comparison of the dynamics of phytoplankton biomass and total amino acid composition was made for two water bodies: in one the phytoplankton were dominated by prokaryotes (i.e., there was a bloom of cyanobacteria) and by eukaryotic microalgae in the other. The dynamics of phytoplankton biomass and of total amino acid composition of water were investigated during the vegetation season. It was found that the only factor that significantly changed the percentages of amino acids in water was the bloom of cyanobacteria in the "blooming" water body. During the bloom of cyanobacteria, the absolute and relative content of the Leu-Glu group increased, while the contents of other acids generally dropped. Before and after the bloom, no significant variations in the total amino acid composition were recorded. In the reservoir where eukaryotic microalgae dominated, no significant variations in amino acid composition were recorded during the season.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State University, Svobodny av. 79, Krasnoyarsk, 660041, Russian Federation
Krasnoyarsk State Agric. University, Mira av., 88, Krasnoyarsk, 660049, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kalachova, G.S.; Kolmakova, A.A.; Gladyshev, M.I.; Kravchuk, E.S.; Ivanova, E.A.

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14.

Limnetic zooplankton run-off a high-head dam and their fate in a river with high current velocity (case of the Krasnoiarsk hydroelectric power station on the Yenisei river / O. P. Dubovskaia, M. I. Gladyshev, O. N. Makhutova // Zhurnal obshchei biologii. - 2004. - Vol. 65, Is. 1. - С. 81-93 . - ISSN 0044-4596
Кл.слова (ненормированные):
fresh water -- animal -- article -- biomass -- electric power plant -- physiology -- Russian Federation -- season -- zooplankton -- Animals -- Biomass -- Fresh Water -- Power Plants -- Seasons -- Siberia -- Zooplankton
Аннотация: The vertical distribution of net zooplankton in head-water of Krasnoyarsk hydroelectric power station and its horizontal distribution in the tail-water were studied during two years in winter and summer seasons. In order to distinguish living and dead individuals the special staining was used. It was revealed that on average 77% of living plankton pass through high-head dam with deep water scoop to the tailwater. While passing through dam aggregates some individuals of the reservoir plankton are traumatized and die, that results in some increase of portion of dead individuals in the tail water near dam (from 3 to 6%). Alive zooplankton passed through the dam aggregates is eliminated under the Upper Yenisei highly turbulent conditions. There is approximately 10% of it in 32 km from the dam if compare with biomass in 20-40 m layer of reservoir, the portion of dead increases to 11%. The biomass of zooplankton suspended in the water column of the tail-water sometimes increases (till > 1 g/m3) due to large Copepoda Heteroscope borealis, which inhabits near-bottom and near-shore river zones and can be found in the central part of the river during reproductive period. Limnetic zooplankton from the reservoir cannot be considered as important food for planktivores in the tail-water.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of RAS Akademgorodok, Krasnoyarsk, 660036, Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Dubovskaia, O.P.; Gladyshev, M.I.; Makhutova, O.N.

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15.

Particulate fatty acids in two small Siberian reservoirs dominated by different groups of phytoplankton / N. N. Sushchik [et al.] // Freshwater Biology. - 2003. - Vol. 48, Is. 3. - P394-403, DOI 10.1046/j.1365-2427.2003.01009.x . - ISSN 0046-5070
Кл.слова (ненормированные):
Cyanobacteria -- Daphnids -- Diatoms -- Fatty acids -- alga -- cyanobacterium -- fatty acid -- periodicity -- phytoplankton -- reservoir -- seston -- algae -- Bacillariophyta -- Chlorophyta -- Cyanobacteria -- Daphnia -- Dinophyceae -- Euglenida -- Eukaryota
Аннотация: 1. We studied the composition of fatty acids (FAs) in the seston from two small freshwater reservoirs (Bugach and Lesnoi) with distinct periodicity of domination by cyanobacteria and eukaryotic algae during the growth season. 2. The diatoms in the both reservoirs were characterised by a high content of 14:0 and C16 unsaturated acids, whereas that of the essential FA 20:5?3 [eicosapentanoic acid (EPA)] was low. The correlation between this polyunsaturated FA (PUFA) and diatom biomass was not significant in either reservoir. The percentage of 20:5?3 in seston significantly correlated with the biomass of euglenophyta in Bugach and dinophyta in Lesnoi. Hence the diatoms, usually referred as a valuable food for zooplankton, were not an important source of the essential PUFA in these systems. 3. The dominant cyanobacteria in Bugach, and the green algae in Lesnoi, both contained the same marker acids: 18:3?3 and 18:2?6. Hence, a discrimination between these two phytoplanktonic groups on the basis of FA biomarkers may be difficult in some cases. 4. We found no significant correlation between the content of 20:5?3 in seston and the biomass of the dominant daphniids in either reservoir. This is contrary to expectations, based on the literature, that EPA is generally important. Rather, the biomass of the two dominant Daphnia species in Bugach correlated strongly with the content of 18:3?3 in the seston. The cyanobacteria were a probable source of this ?3 FA for Daphnia. We conclude that EPA is not always important for Daphnia populations although, in such cases, some other PUFA (e.g. 18:3?3) might be related to their growth.

Scopus
Держатели документа:
Inst. Biophys. Siberian Br. Russ. A., Akademgorodok, Krasnoyarsk, Russian Federation
Krasnoyarsk State University, Svobodny av., Krasnoyarsk, Russian Federation
Krasnoyarsk Stt. Agric. University, Mira av., Krasnoyarsk, Russian Federation
Inst. Biophys. Siberian Br. Russ. A., Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Sushchik, N.N.; Gladyshev, M.I.; Kalachova, G.S.; Kravchuk, E.S.; Dubovskaya, O.P.; Ivanova, E.A.

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16.

Phylogenetic diversity of winter bacterioplankton of eutrophic Siberian reservoirs as revealed by 16S rRNA gene sequences / M. Yu. Trusova, M. I. Gladyshev // Microbial Ecology. - 2002. - Vol. 44, Is. 3. - P252-259, DOI 10.1007/s00248-002-2020-1 . - ISSN 0095-3628
Кл.слова (ненормированные):
bacterioplankton -- community composition -- community dynamics -- genetic variation -- phylogenetics -- reservoir -- winter -- Russian Federation -- Actinobacteria -- Bacteria (microorganisms) -- Bacteroides -- Betaproteobacteria -- Cyanobacteria -- Cytophaga -- Flavobacterium -- Prokaryota -- Proteobacteria -- bacterial DNA -- fresh water -- RNA 16S -- animal -- article -- bacterium -- chemistry -- DNA sequence -- genetic variability -- genetics -- microbiology -- molecular genetics -- phylogeny -- plankton -- Russian Federation -- season -- Animals -- Bacteria -- DNA, Bacterial -- Fresh Water -- Molecular Sequence Data -- Phylogeny -- Plankton -- RNA, Ribosomal, 16S -- Seasons -- Sequence Analysis, DNA -- Siberia -- Variation (Genetics)
Аннотация: Using 16S rRNA gene sequence analyses we investigated the bacterial diversity of winter bacterioplankton of two eutrophic Siberian reservoirs. These reservoirs show similarity in phytoplankton community composition in spring and autumn but tend to differ in summer in exhibiting cyanobacterial bloom. Forty-eight unique partial 16S RNA gene sequences retrieved from two libraries were mostly affiliated with the class Actinobacteria, ? subdivision of the class Proteobacteria, and the phylum Cytophaga-Flavobacterium-Bacteroides. The clone library of the pond exhibiting summer cyanobacterial bloom showed more diversity in sequence composition. A significant number of bacterial 16S rRNA gene clones were closely related to freshwater bacteria previously found in different aquatic ecosystems. This finding confirms the assumption that some bacterial clades are globally distributed.

Scopus
Держатели документа:
Inst. of Biophys. of Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Trusova, M.Yu.; Gladyshev, M.I.

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17.

Seasonal dynamics of the numbers of Anabaena flos-aquae (Lyngb.) Breb. akinetes in the surface layer of bottom sediments and bulk water. / E. S. Kravchuk, E. A. Ivanova, M. I. Gladyshev // Doklady Biological Sciences. - 2002. - Vol. 384. - P233-234 . - ISSN 0012-4966
Кл.слова (ненормированные):
fresh water -- Anabaena -- article -- microbiology -- physiology -- season -- sediment -- Anabaena -- Fresh Water -- Geologic Sediments -- Seasons -- Water Microbiology

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kravchuk, E.S.; Ivanova, E.A.; Gladyshev, M.I.

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18.

Experimental study of postwintering germination of akinetes and dormant cells of cyanoprocaryotes from bottom sediments of blooming and nonblooming ponds. / M. I. Gladyshev [et al.] // Doklady Biological Sciences. - 2002. - Vol. 383, Is. 1-6. - P131-132 . - ISSN 0012-4966
Кл.слова (ненормированные):
fresh water -- article -- Cyanobacterium -- cytology -- growth, development and aging -- microbiology -- physiology -- season -- Cyanobacteria -- Fresh Water -- Seasons -- Water Microbiology

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Kravchuk, E.S.; Kolmakov, V.I.; Ivanova, E.A.; Trusova, M.Y.; Sushchik, N.N.; Gribovskaya, I.V.

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19.

Species composition of winter bacterioplankton in two Siberian ponds determined by the 16s rRNA sequence analysis. / M. Y. Trusova, M. I. Gladyshev // Doklady Biological Sciences. - 2002. - Vol. 382. - P51-54 . - ISSN 0012-4966
Кл.слова (ненормированные):
bacterial RNA -- RNA 16S -- animal -- article -- bacterium -- classification -- ecosystem -- genetics -- microbiology -- molecular cloning -- molecular genetics -- plankton -- Russian Federation -- season -- species difference -- Animals -- Bacteria -- Cloning, Molecular -- Ecosystem -- Molecular Sequence Data -- Plankton -- RNA, Bacterial -- RNA, Ribosomal, 16S -- Seasons -- Siberia -- Species Specificity -- Water Microbiology

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Trusova, M.Y.; Gladyshev, M.I.

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20.

Growth and survival of cyanobacteria in water from blooming and nonblooming ponds under experimental conditions. / M. I. Gladyshev [et al.] // Doklady Biological Sciences. - 2000. - Vol. 375. - P607-609 . - ISSN 0012-4966
Кл.слова (ненормированные):
chlorophyll -- fresh water -- phosphorus -- Anabaena -- Arctic -- article -- biomass -- comparative study -- Cyanobacterium -- growth, development and aging -- microbiology -- pH -- plant -- Russian Federation -- season -- Anabaena -- Arctic Regions -- Biomass -- Chlorophyll -- Cyanobacteria -- Fresh Water -- Hydrogen-Ion Concentration -- Phosphorus -- Plants -- Russia -- Seasons

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Kolmakov, V.I.; Kravchuk, E.S.; Ivanova, E.A.; Trusova, M.Y.; Gribovskaya, I.V.; Zhilenkov, M.D.

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