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A one-dimensional model for phytoflagellate distribution in the meromictic lake [Text] / I. G. Prokopkin, Y. V. Barkhatov, E. B. Khromechek // Ecol. Model. - 2014. - Vol. 288. - P. 1-8, DOI 10.1016/j.ecolmode1.2014.05.011. - Cited References: 22. - This work was supported by Russian Foundation for Basic Research (RFBR) No. 13-04-01514 and Integrative Project of Siberian Branch of Russian Academy of Sciences No. 56. The anonymous reviewers are kindly acknowledged for valuable suggestions and criticism. . - ISSN 0304-3800. - ISSN 1872-7026

РУБ Ecology
Рубрики:
VERTICAL-DISTRIBUTION
   CHLOROPHYLL MAXIMUM
   SOUTH SIBERIA
   RUSSIA
   KHAKASIA
   SHIRA
   CRYPTOPHYTES
   CRYPTOMONAS
   CHEMOCLINE
   MIGRATION
Кл.слова (ненормированные):
Phytoflagellates -- Meromictic lake -- Simulation modeling -- Lake Shira
Аннотация: Using mathematical modeling methods, the work investigates possible existence of a phytoflagellate population in the ecosystem of a stratified lake (Lake Shira, Khakasia, Russia). Until this study was carried out, no phytoflagellate population had been detected in the lake, although there had been indirect evidence of the possible presence of a cryptomonad population in this water body. To answer the question if this population may be present in this water body, as the first step of investigation, a mathematical model was developed describing the microorganism biomass dynamics and phytoflagellate relationship with the lake food web. The calculations showed that cryptophytic algae were abundant in the water column layers above the lake chemocline at the beginning of summer but showed low biomass concentrations during other periods of time. In the summer following the construction of the model, samples were collected from Lake Shira, as the next step of the study. A cryptophytic algae population was found in the water column, and the pattern of its distribution in the ecosystem was similar to that predicted by the model. In addition to that, we studied theoretically possible reasons for the early summer development of the population in the deep water layers and found that it was the result of the mixotrophic feeding strategy of cryptomonads and trophic interactions in the food web. The study shows that preliminary modeling of the locational and temporal distribution of populations whose presence in the ecosystem is only suggested by indirect evidence may be useful as a tool for searching for the species in natural ecosystems and as an approach enabling a more accurate description of the food web structure of a water body. (C) 2014 Elsevier B.V. All rights reserved.

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Держатели документа:
[Prokopkin, I. G.
Barkhatov, Y. V.
Khromechek, E. B.] Akademgorodok, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Prokopkin, I.G.; Barkhatov, Y.V.; Khromechek, E.B.; Russian Foundation for Basic Research (RFBR) [13-04-01514]; Integrative Project of Siberian Branch of Russian Academy of Sciences [56]

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An in situ method for the investigation of vertical distributions of zooplankton in lakes: test of a two-compartment enclosure [Text] / A. P. Tolomeyev, Y. S. Zadereev // Aquat. Ecol. - 2005. - Vol. 39, Is. 2. - P. 181-188, DOI 10.1007/s10452-004-5732-0. - Cited References: 21 . - ISSN 1386-2588

РУБ Ecology + Limnology + Marine & Freshwater Biology
Рубрики:
MIGRATION
   DAPHNIA
   RADIATION
   COPEPODS
   EXPOSURE
   PATTERNS
   LIGHT
Кл.слова (ненормированные):
anoxic hypolimnion -- solar radiation -- stratified lake -- vertical migration -- zooplankton
Аннотация: Two-section enclosures were designed for the investigation of the effect of various physicochemical and biological factors on vertical distribution of zooplankton in situ. The framework of the enclosure was a cylindrical polyethylene column without any partitions inside, in which the isolation of animals in different sections after in situ exposure was achieved by pinching the flexible central part of the column. Enclosures were tested at the brackish stratified meromictic Lake Shira (Russia, Khakasia). The absence of fish and carnivorous zooplankton in the lake suggests that the vertical distribution of zooplankton is mainly determined by physicochemical gradients in the water column. Experiments and field observations demonstrated that all age and size groups of Arctodiaptomus salinus and Brachionus plicatilis strongly avoided surface layers during the daylight. The escape of zooplankton from the anoxic hypolimnion was less active. Statistically significant avoidance was observed only for copepodites C4-C5 and females of A. salinus. The relatively simple construction of the columns and easy handling during the experiment were the factors that favoured the use of this device to perform in situ basic tests of the effect of different factors on the vertical distribution of zooplankton.

WOS
Держатели документа:
SB RAS, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tolomeyev, A.P.; Zadereev, Y.S.

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An in situ method for the investigation of vertical distributions of zooplankton in lakes: Test of a two-compartment enclosure / A. P. Tolomeyev, Y. S. Zadereev // Aquatic Ecology. - 2005. - Vol. 39, Is. 1-2. - P181-188, DOI 10.1007/s10452-004-5732-0 . - ISSN 1386-2588
Кл.слова (ненормированные):
Anoxic hypolimnion -- Solar radiation -- Stratified lake -- Vertical migration -- Zooplankton -- biotic factor -- enclosure experiment -- lake ecosystem -- physicochemical property -- vertical distribution -- zooplankton -- Animalia -- Arctodiaptomus salinus -- Brachionus plicatilis
Аннотация: Two-section enclosures were designed for the investigation of the effect of various physicochemical and biological factors on vertical distribution of zooplankton in situ. The framework of the enclosure was a cylindrical polyethylene column without any partitions inside, in which the isolation of animals in different sections after in situ exposure was achieved by pinching the flexible central part of the column. Enclosures were tested at the brackish stratified meromictic Lake Shira (Russia, Khakasia). The absence of fish and carnivorous zooplankton in the lake suggests that the vertical distribution of zooplankton is mainly determined by physicochemical gradients in the water column. Experiments and field observations demonstrated that all age and size groups of Arctodiaptomus salinus and Brachionus plicatilis strongly avoided surface layers during the daylight. The escape of zooplankton from the anoxic hypolimnion was less active. Statistically significant avoidance was observed only for copepodites C4-C5 and females of A. salinus. The relatively simple construction of the columns and easy handling during the experiment were the factors that favoured the use of this device to perform in situ basic tests of the effect of different factors on the vertical distribution of zooplankton. В© Springer 2005.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok, 660036, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tolomeyev, A.P.; Zadereev, Y.S.

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Asynchronous vertical migrations of zooplankton in stratified lakes / E. S. Zadereev, A. P. Tolomeev, A. V. Drobotov // Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - P443-449, DOI 10.1134/S1995425512040166 . - ISSN 1995-4255
Кл.слова (ненормированные):
individual migrations -- stratified lakes -- zooplankton -- crustacean -- epilimnion -- hypolimnion -- lake ecosystem -- thermocline -- vertical migration -- zooplankton -- Siberia -- Arctodiaptomus salinus -- Calanoida -- Copepoda
Аннотация: Asynchronous vertical migrations of calanoid copepods Arctodiaptomus salinus were studied in two stratified lakes in the south of Siberia using the method of two-section enclosures. It was found that the presence of a pronounced thermocline and a depth maximum of phytoplankton (Lake Shira) contributes to the appearance of intensive individual migrations of copepods between areas of the epi- and hypolimnion. В© 2012 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of the 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:
Zadereev, E.S.; Tolomeev, A.P.; Drobotov, A.V.

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Chemical interactions between planktonic crustaceans [Текст] / E. S. Zadereev // Zhurnal Obshchei Biol. - 2002. - Vol. 63, Is. 2. - P. 159-167. - Cited References: 52 . - ISSN 0044-4596

РУБ Biology
Рубрики:
DIEL VERTICAL MIGRATION
   DAPHNIA-MAGNA CRUSTACEA
   SEX DETERMINATION
   COLONY FORMATION
   CLADOCERA
   FISH
   RESPONSES
   PULEX
   WATER
   SCENEDESMUS
Аннотация: Three levels of chemical communications involved plankton Crustacea are considered: 1) Influence of zooplankton excretion on phytoplankton; 2) Influence of zooplankton excretion on the individuals of the same or other species of the same trophic level; 3) Influence of chemical cues released by predatory zooplankton and fish on herbivorous zooplankton. The data on the influence of excreted cues on some physiological (growth, reproduction, feeding, etc.) and behavioural (vertical and horizontal migrations) characters of planktonic crustaceans are presented. Ecological role and chemistry cues responsible for the interactions of different trophic levels can be different. It is considered that chemical communications in aquatic ecosystems can be provided with: 1) Species-specific cues that strictly influence particular biological functions (communication system of feromone type); 2) Non-specific cues that strictly influence particular functions (system of regulator, that act at the whole ecosystem as the hormonal system of an organism). 3) Non-specific substances with broad (nonspecific) influence-toxic substances of "biocondition substances" according to classification of Novikov and Kharlamova (2000).

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Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zadereev, E.S.

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Coupled large earthquakes in the Baikal rift system: Response to bifurcations in nonlinear resonance hysteresis / A. V. Klyuchevskii, R. G. Khlebopros // Geoscience Frontiers. - 2013, DOI 10.1016/j.gsf.2013.01.008 . - ISSN 1674-9871
Кл.слова (ненормированные):
Baikal rift system -- Bifurcation -- Coupled large earthquakes -- Hysteresis -- Nonlinear geodynamics -- Nonlinear oscillator with dissipation -- Phase portrait
Аннотация: The current lithospheric geodynamics and tectonophysics in the Baikal rift are discussed in terms of a nonlinear oscillator with dissipation. The nonlinear oscillator model is applicable to the area because stress change shows up as quasi-periodic inharmonic oscillations at rifting attractor structures (RAS). The model is consistent with the space-time patterns of regional seismicity in which coupled large earthquakes, proximal in time but distant in space, may be a response to bifurcations in nonlinear resonance hysteresis in a system of three oscillators corresponding to the rifting attractors. The space-time distribution of coupled MLHВ >В 5.5 events has been stable for the period of instrumental seismicity, with the largest events occurring in pairs, one shortly after another, on two ends of the rift system and with couples of smaller events in the central part of the rift. The event couples appear as peaks of earthquake 'migration' rate with an approximately decadal periodicity. Thus the energy accumulated at RAS is released in coupled large events by the mechanism of nonlinear oscillators with dissipation. The new knowledge, with special focus on space-time rifting attractors and bifurcations in a system of nonlinear resonance hysteresis, may be of theoretical and practical value for earthquake prediction issues. Extrapolation of the results into the nearest future indicates the probability of such a bifurcation in the region, i.e., there is growing risk of a pending MВ ?В 7 coupled event to happen within a few years. В© 2013.

Scopus
Держатели документа:
Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, 128 ul. Lermontov, Irkutsk 664033, Russia
Siberian Federal University, 79, Svobodny ave., Krasnoyarsk 660041, Russia
Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Klyuchevskii, A.V.; Khlebopros, R.G.

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Coupled large earthquakes in the Baikal rift system: Response to bifurcations in nonlinear resonance hysteresis / A. V. Klyuchevskii, R. G. Khlebopros // Geoscience Frontiers. - 2013. - Vol. 4, Is. 6. - P709-716, DOI 10.1016/j.gsf.2013.01.008 . - ISSN 1674-9871
Кл.слова (ненормированные):
Baikal rift system -- Bifurcation -- Coupled large earthquakes -- Hysteresis -- Nonlinear geodynamics -- Nonlinear oscillator with dissipation -- Phase portrait
Аннотация: The current lithospheric geodynamics and tectonophysics in the Baikal rift are discussed in terms of a nonlinear oscillator with dissipation. The nonlinear oscillator model is applicable to the area because stress change shows up as quasi-periodic inharmonic oscillations at rifting attractor structures (RAS). The model is consistent with the space-time patterns of regional seismicity in which coupled large earthquakes, proximal in time but distant in space, may be a response to bifurcations in nonlinear resonance hysteresis in a system of three oscillators corresponding to the rifting attractors. The space-time distribution of coupled MLH > 5.5 events has been stable for the period of instrumental seismicity, with the largest events occurring in pairs, one shortly after another, on two ends of the rift system and with couples of smaller events in the central part of the rift. The event couples appear as peaks of earthquake 'migration' rate with an approximately decadal periodicity. Thus the energy accumulated at RAS is released in coupled large events by the mechanism of nonlinear oscillators with dissipation. The new knowledge, with special focus on space-time rifting attractors and bifurcations in a system of nonlinear resonance hysteresis, may be of theoretical and practical value for earthquake prediction issues. Extrapolation of the results into the nearest future indicates the probability of such a bifurcation in the region, i.e.; there is growing risk of a pending M ? 7 coupled event to happen within a few years.В© 2013, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V. All rights reserved.

Scopus
Держатели документа:
Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, 128 ul. Lermontov, Irkutsk 664033, Russian Federation
Siberian Federal University, 79 Svobodny ave., Krasnoyarsk 660041, Russian Federation
Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, 50/50 Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Klyuchevskii, A.V.; Khlebopros, R.G.

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Densities and distribution of flagellates and ciliates in the chemocline of saline, meromictic Lake Shunet (Siberia, Russia) / E. B. Khromechek, Y. V. Barkhatov, D. Y. Rogozin // Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - P497-511, DOI 10.1007/s10452-010-9332-x . - ISSN 1386-2588
Кл.слова (ненормированные):
Chemocline -- Ciliate -- Cryptomonas -- Deep chlorophyll maximum -- Diel vertical migrations -- Meromictic lakes -- anoxic conditions -- bacterium -- biomass -- chlorophyll -- ciliate -- diel migration -- flagellate -- meromictic lake -- population density -- saline lake -- seasonal variation -- vertical distribution -- zooplankton -- Khakassia -- Lake Shunet -- Russian Federation -- Siberia -- Bacteria (microorganisms) -- Ciliophora -- Cryptomonas -- Hypotrichia -- Mastigophora (flagellates) -- Oligotrichia -- Phytomastigophorea -- Prostomatida -- Scuticociliatia
Аннотация: The vertical and seasonal distributions of the phytoflagellate Cryptomonas spp., and its most common, the planktonic ciliate predators (Oligotrichida, Scuticociliatida, Hypotrichida and Prostomatida) were investigated in chemocline region of small saline, meromictic lake Shunet (Siberia, Russia) during 2003 and 2005. The lake has a pronounced chemocline, with abundance of purple and green sulphur bacteria. Vertical distribution of the Cryptomonas populations near the oxic/anoxic boundary layer was studied at close intervals in water sampled using a hydraulically operated thin-layer sampler. In both summer and winter, Cryptomonas peaked in water stratum 5-10 cm above anoxic zone or in the anoxic zone water column in the chemocline (about 5 m). Ciliate densities and biomass were also much higher in chemocline than in mixolimnion. The range of diurnal migration of Cryptomonas population was not very wide, and it was restricted to layers with high light intensity. The ciliates were sometimes detected above the upper border of the anoxic zone but also several centimetres below this zone. В© 2010 Springer Science+Business Media B.V.

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

Доп.точки доступа:
Khromechek, E.B.; Barkhatov, Y.V.; Rogozin, D.Y.

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Differences in fatty acid composition between smolts of Sockeye Salmon and adults migrated from sea to lake for spawning / M. I. Gladyshev [et al.] // Doklady Biochemistry and Biophysics. - 2010. - Vol. 430, Is. 1. - P29-32, DOI 10.1134/S1607672910010096 . - ISSN 1607-6729
Кл.слова (ненормированные):
fatty acid -- fresh water -- sea water -- animal -- article -- chemistry -- cytology -- female -- male -- metabolism -- muscle -- physiology -- population migration -- reproduction -- salmon -- sea -- Animal Migration -- Animals -- Fatty Acids -- Female -- Fresh Water -- Male -- Muscles -- Oceans and Seas -- Reproduction -- Salmon -- Seawater -- Oncorhynchus nerka

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Kamchatka Research Institute of Fisheries and Oceanography, Naberezhnaya 18, Petropavlovsk-Kamchatskii, 683602, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Lepskaya, E.V.; Sushchik, N.N.; Makhutova, O.N.; Kalacheva, G.S.

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10.

Distribution and migration of metals in trophic chains of the Yenisei ecosystem near Krasnoyarsk City / O. V. Anishchenko [et al.] // Water Resources. - 2009. - Vol. 36, Is. 5. - P594-603, DOI 10.1134/S0097807809050121 . - ISSN 0097-8078
Кл.слова (ненормированные):
Aquatic organisms -- Atomic absorption -- Bulk concentration -- Cd concentrations -- Cr concentration -- Ecosystem components -- Emission spectral analysis -- Flame photometry -- Fly larvae -- International standards -- Periphytons -- Primary producers -- Waterbodies -- Aquaculture -- Cadmium -- Chromium -- Ecology -- Photometry -- Spectroscopy -- Spectrum analysis -- Spectrum analyzers -- Water absorption -- Water analysis -- Concentration (process) -- aluminum -- aquatic ecosystem -- aquatic organism -- cadmium -- chromium -- concentration (composition) -- copper -- pollutant transport -- river pollution -- trophic environment -- Krasnoyarsk [Russian Federation] -- Russian Federation -- Yenisei River -- Bryophyta -- Decapoda (Crustacea) -- Thymallus arcticus
Аннотация: Methods of atomic absorption, flame photometry, and emission spectral analysis were used to study the concentrations of metals in water and major ecosystem components of the Yenisei River upstream of Krasnoyarsk City (conventionally background area). The mean bulk concentrations of Al and Cu in water exceeded the MAC for water bodies used for fishery. Cu concentration in freshwater shrimp was found to be reliably higher than that in the link of primary producers (periphyton), and Cd concentration in caddis fly larvae was found to exceed that in water moss. The maximal concentrations of metals among the examined aquatic organisms were recorded in periphyton. Cr concentration in the muscles of Arctic grayling was found to exceed some international standards. В© 2009 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Geophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, prosp. Svobodnyi 79, Krasnoyarsk 660046, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Anishchenko, O.V.; Gladyshev, M.I.; Kravchuk, E.S.; Sushchik, N.N.; Gribovskaya, I.V.

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11.

Ecological Forms of Black Sea Brown Trout (Salmo trutta labrax) in the Mzymta River as Manifestation of Ontogenetic Plasticity / A. A. Makhrov [et al.] // Russ. J. Dev. Biol. - 2018. - Vol. 49, Is. 2. - P117-127, DOI 10.1134/S1062360418020054. - Cited References:77. - This study was supported by the Russian Scientific Foundation, project no. 16-14-10001. . - ISSN 1062-3604. - ISSN 1608-3326

РУБ Developmental Biology
Рубрики:
ATLANTIC SALMON
   POPULATIONS
   HISTORY
   L.
   MIGRATION
   SURVIVAL
Кл.слова (ненормированные):
Salmonidae -- brown trout -- trout -- ontogenesis -- migrations -- maturation -- phenotypic plasticity -- gonads -- smolts
Аннотация: Populations of brown trout in the Mzymta River and its tributaries include anadromous (mainly female) and resident (mainly males) fish. Some resident males in the basin of the Mzymty River attain sexual maturity at the age 1+, and resident females mature at the age 2+ or 3+. The maximum age of resident fish is 4+ in the samples studied. Migrations of anadromous brown trout to the sea occur at the ages 1+, 2+, or 3+. Future spawners spend from 1 to 4 years at feeding grounds in the sea. Smolts of the population are characterized by performing not only spring but also autumn migrations to the sea. One smolt specimen has been detected upstream from the dam in the river where spawners of anadromous brown trout do not migrate; this means that the capability for sea migrations persists long in the population represented only by resident specimens of brown trout. The diversity of life cycles and ecological forms in populations of brown trout is not lower than in populations of brown trout in Northern and Western Europe. The comparison of the data obtained with published data makes it possible to come to the conclusion about the high plasticity of ontogenesis of Black Sea brown trout.

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Смотреть статью
Держатели документа:
Russian Acad Sci, Severtsov Inst Ecol & Evolut, Moscow 119071, Russia.
Russian Acad Sci, Fed Res Ctr Krasnoyarsk Sci Ctr, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
St Petersburg State Univ, St Petersburg 199034, Russia.
Azov Res Inst Fisheries, Krasnodar Branch, Krasnodar 350000, Russia.
Moscow MV Lomonosov State Univ, Moscow 119991, Russia.
Kuban State Univ, Krasnodar 350040, Russia.

Доп.точки доступа:
Makhrov, A. A.; Artamonova, V. S.; Murza, I. G.; Pashkov, A. N.; Ponomareva, M. V.; Reshetnikov, S. I.; Christoforov, O. L.; Russian Scientific Foundation [16-14-10001]

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12.

Effect of daily variations in abiotic conditions on the distribution and production of phytoplankton in Lake Baikal / A. V. Kartushinskii // Water Resources. - 1997. - Vol. 24, Is. 1. - P60-67 . - ISSN 0097-8078
Аннотация: Based on experimental and field data, the character of daily variations in the production and distribution of the phytoplankton biomass under various hydrodynamic and thermodynamic conditions is analyzed. The effects of density stratification, wind and light conditions, vertical water flows, and daily migration of the Zooplankton on the life activity of the phytoplankton are simulated. It is shown that the vertical distribution of the maximum concentrations of the phytoplankton depends on daily variations in a number of abiotic factors. В© 1997 MAHK Hayka/Interperiodica Publishing.

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

Доп.точки доступа:
Kartushinskii, A.V.

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13.

Effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system as studied by dual-column ion chromatography and ?-ray spectrometry / L. G. Bondareva, O. P. Kalyakina, A. Ya. Bolsunovskii // Journal of Analytical Chemistry. - 2006. - Vol. 61, Is. 4. - P354-358, DOI 10.1134/S1061934806040101 . - ISSN 1061-9348
Кл.слова (ненормированные):
Absorption -- Chromatographic analysis -- Complexation -- Gamma ray spectrometers -- Radioisotopes -- ?-ray spectrometry -- Absorption-release processes -- Dual-column ion chromatography -- Humic acid -- Organic acids
Аннотация: The effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system was studied by dual-column ion chromatography and ?-ray spectrometry. With the use of ion chromatography, it was found that processes related to the absorption of SO 42- and Cl- anions by a solid phase with the release of NO 3- , PO 43- , and F- to a liquid phase competed in the test systems as the concentration of water-soluble organic carbon (WSOC) was increased. Only the test anions were released in the systems without the introduction of an additional amount of WSOC as humic acid. With the use of ?-ray spectrometry, it was found that the release of 60Co, 152Eu, and 241Am radionuclides to the liquid phase in the systems with added humic acid began much earlier than in the system without the addition of humic acid. In this case, the amount of released radionuclides was greater than the amount of radioisotopes released in the system without the addition of humic acid: ?25% 241Am, ?3% 152Eu, and ?0.8% 60Co in the system with added humic acid or 0.8% 152Eu and <0.1% 60Co in the system without the addition of humic acid. The 241Am radionuclide was not determined in the system without the addition of humic acid. An increase in the concentration of WSOC in the experimental system of bottom sediments-Yenisei river water initiated the release of 60Co, 152Eu, and 241Am anthropogenic radionuclides from bottom sediments because of the formation of soluble complexes capable of migration. An increase in the concentration of WSOC had almost no effect on the release of 40K and 137Cs radionuclides. В© Pleiades Publishing, Inc., 2006.

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

Доп.точки доступа:
Bondareva, L.G.; Kalyakina, O.P.; Bolsunovskii, A.Ya.

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14.

Effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system as studied by dual-column ion chromatography and gamma-ray spectrometry [Text] / L. G. Bondareva, O. P. Kalyakina, A. Y. Bolsunovskii // J. Anal. Chem. - 2006. - Vol. 61, Is. 4. - P354-358, DOI 10.1134/S1061934806040101. - Cited References: 11 . - 5. - ISSN 1061-9348

РУБ Chemistry, Analytical

Аннотация: The effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system was studied by dual-column ion chromatography and gamma-ray spectrometry. With the use of ion chromatography, it was found that processes related to the absorption of SO42- and Cl- anions by a solid phase with the release of NO3-, PO43-, and F- to a liquid phase competed in the test systems as the concentration of water-soluble organic carbon (WSOC) was increased. Only the test anions were released in the systems without the introduction of an additional amount of WSOC as humic acid. With the use of gamma-ray spectrometry, it was found that the release of Co-60, Eu-152, and Am-241 radionuclides to the liquid phase in the systems with added humic acid began much earlier than in the system without the addition of humic acid. In this case, the amount of released radionuclides was greater than the amount of radioisotopes released in the system without the addition of humic acid: similar to 25% Am-241, similar to 3% Eu-152, and similar to 0.8% Co-60 in the system with added humic acid or 0.8% Eu-152 and 0.1% Co-60 in the system without the addition of humic acid. The Am-241 radionuclide was not determined in the system without the addition of humic acid. An increase in the concentration of WSOC in the experimental system of bottom sediments-Yenisei river water initiated the release of Co-60, Eu-152, and Am-241 anthropogenic radionuclides from bottom sediments because of the formation of soluble complexes capable of migration. An increase in the concentration of WSOC had almost no effect on the release of K-40 and Cs-137 radionuclides.

Держатели документа:
Russian Acad Sci, Siberian Div, Inst Biophys, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Fac Chem, Krasnoyarsk 660041, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bondareva, L.G.; Kalyakina, O.P.; Bolsunovskii, A.Y.

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15.

Experimental microcosms as models of natural ecosystems for monitoring survival of genetically modified microorganism. / U - Popova LYu [et al.] // Life support & biosphere science : international journal of earth space. - 1999. - Vol. 6, Is. 3. - P193-197 . - ISSN 1069-9422
Кл.слова (ненормированные):
bacterial DNA -- recombinant DNA -- adaptation -- article -- ecosystem -- Escherichia coli -- genetics -- microbiology -- plasmid -- risk assessment -- Adaptation, Biological -- DNA, Bacterial -- DNA, Recombinant -- Ecosystem -- Escherichia coli -- Microbiology -- Plasmids -- Risk Assessment -- Soil Microbiology -- Water Microbiology
Аннотация: An experimental approach for investigation of genetically modified microorganisms (GMMO) introduced into model ecosystems to evaluate potential risk of propagation of recombinant plasmids in surrounding medium has been developed. The object of modeling was Escherichia coli Z905 strain with a recombinant plasmid with bacterial luminescence genes, which was introduced into water microcosms of different structure. The approach involves comprehensive investigation of GMMO at four hierarchical levels: molecular (retaining the structure of the plasmid and expression of cloned genes); cellular (variation of metabolic activity); population (competitive power and metabolic interactions of GMMO with indigenous microflora, migration of recombinant and natural plasmids); ecosystem (effect of GMMO and cloned genes on ecosystem parameters). The experimental evidence and theoretical estimates are intended to form grounds to develop a basic version of an ecological certificate for different GMMO variants.

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

Доп.точки доступа:
, U - Popova LYu; Pechurkin, N.S.; Maksimova, E.E.; Kargatova, T.V.; , U - Krylova TYu; Lobova, T.I.; Boyandin, A.N.

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16.

Experimental wound dressings of degradable PHA for skin defect repair / E. I. Shishatskaya [et al.] // J. Mater. Sci. Mater. Med. - 2016. - Vol. 27, Is. 11, DOI 10.1007/s10856-016-5776-4 . - ISSN 0957-4530
Кл.слова (ненормированные):
Biomaterials -- Cell culture -- Cells -- Cytology -- Enzyme inhibition -- Fibroblasts -- Membranes -- Natural polymers -- Nonwoven fabrics -- Polymer films -- Proteins -- Stem cells -- Weaving -- Electrospun membranes -- Extracellular matrix protein -- Fibroblast cells -- Hydroxyderivative -- Mesenchymal stem cell -- Non-woven membranes -- Wound dressing materials -- Wound healing process -- Tissue
Аннотация: The present study reports construction of wound dressing materials from degradable natural polymers such as hydroxy derivatives of carboxylic acids (PHAs) and 3-hydroxybutyrate/4-hydroxybutyrate [P(3HB/4HB)] as copolymer. The developed polymer films and electrospun membranes were evaluated for its wound healing properties with Grafts—elastic nonwoven membranes carrying fibroblast cells derived from adipose tissue multipotent mesenchymal stem cells. The efficacy of nonwoven membranes of P(3HB/4HB) carrying the culture of allogenic fibroblasts was assessed against model skin defects in Wistar rats. The morphological, histological and molecular studies revealed the presence of fibroblasts on dressing materials which facilitated wound healing, vascularization and regeneration. Further it was also observed that cells secreted extracellular matrix proteins which formed a layer on the surface of membranes and promoted the migration of epidermal cells from the neighboring tissues surrounding the wound. The wounds under the P(3HB/4HB) membrane carrying cells healed 1.4 times faster than the wounds under the cell-free membrane and 3.5 times faster than the wounds healing under the eschar (control).The complete wound healing process was achieved at Day 14. Thus the study highlights the importance of nonwoven membranes developed from degradable P(3HB/4HB) polymers in reducing inflammation, enhancing angiogenic properties of skin and facilitating better wound healing process. © 2016, Springer Science+Business Media New York.

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Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, 50-50 Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodniy Ave., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shishatskaya, E. I.; Nikolaeva, E. D.; Vinogradova, O. N.; Volova, T. G.

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17.

First evidence for concentrations of transuranium curium in the Yenisei floodplain ecosystem / A. Ya. Bolsunovsky [et al.] // Doklady Earth Sciences. - 2006. - Vol. 409, Is. 5. - P810-813, DOI 10.1134/S1028334X06050308 . - ISSN 1028-334X
Кл.слова (ненормированные):
actinide -- background level -- floodplain -- fluvial deposit -- radionuclide migration -- river pollution -- soil pollution -- Eurasia -- Krasnoyarsk [Russian Federation] -- Russian Federation -- Yenisei River -- Zheleznogorsk

Scopus
Держатели документа:
RAS, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
GUP MosNPO Radon, Sed'moi Rostovskii per. 2/14, Moscow, 119121, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.Ya.; Ermakov, A.I.; Sobolev, A.I.; Degermendzhi, A.G.

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18.

FOXC1-Mediated Effects of miR-204-5p on Melanoma Cell Proliferation / I. Y. Dubovtseva, M. B. Aksenenko, E. D. Nikolaeva [et al.] // Mol. Biol. - 2021. - Vol. 55, Is. 4. - P610-617, DOI 10.1134/S0026893321020199. - Cited References:24 . - ISSN 0026-8933. - ISSN 1608-3245

РУБ Biochemistry & Molecular Biology
Рубрики:
FOXC1
Кл.слова (ненормированные):
FOXC1 -- miR-204-5p -- melanoma -- BRO -- SK-MEL-2 -- siRNA -- miRNA -- dormant cancer -- cells
Аннотация: MicroRNAs epigenetically regulate physiological and pathological processes. Previously, we found that miR-204-5p is expressed at low levels in melanoma cells, and an increase in its level leads to a change in proliferation, migration, and invasion of these cancer cells. Now, using bioinformatics analysis, it has been shown that the target of miR-204-5p is FOXC1 transcription factor, which is implicated in carcinogenesis. Using the luciferase reporter assay, it was found that miR-204-5p suppresses expression of the FOXC1 gene by binding to its 3' non-coding region. Transfection of small interfering RNA (siRNA) targeting FOXC1 into melanoma cells caused a decrease in miR-204-5p levels, which is consistent with the generally accepted concept of feedback regulation of miRNA expression by target genes. According to the results of the MTT test and fluorescence microscopy, the proliferation level of melanoma cells under the influence of siRNA to FOXC1 decreased 72 h after transfection. Changes in the ratio of cells by cell cycle phase were analyzed using flow cytometry. Regulatory relationships between FOXC1 and miR-204-5p, and an inhibitory effect of FOXC1 knockdown on melanoma cell proliferation were revealed. Based on the results, it can be assumed that miR-204-5p regulates proliferation of melanoma cells by affecting FOXC1 expression.

WOS
Держатели документа:
Voino Yasenetsky Krasnoyarsk State Med Univ, Minist Hlth Russian Federat, Krasnoyarsk 660022, Russia.
RAS, Biophys Inst, Siberian Branch, Div Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660022, Russia.
Russian Acad Sci, Siberian Branch, Res Inst Med Problems North, Krasnoyarsk 660022, Russia.

Доп.точки доступа:
Dubovtseva, I. Yu; Aksenenko, M. B.; Nikolaeva, E. D.; Averchuk, A. S.; Moshev, A., V; Savchenko, A. A.; Markova, S., V; Ruksha, T. G.

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19.

FOXC1-Mediated Effects of miR-204-5p on Melanoma Cell Proliferation / I. Y. Dubovtseva, M. B. Aksenenko, E. D. Nikolaeva [и др.] // Mol Biol (Mosk). - 2021. - Vol. 55, Is. 4. - С. 667-675, DOI 10.31857/S0026898421030058 . - ISSN 0026-8984
Кл.слова (ненормированные):
BRO -- dormant cancer cells -- FOXC1 -- melanoma -- miR-204-5p -- miRNA -- siRNA -- SK-MEL-2 -- forkhead transcription factor -- FOXC1 protein, human -- microRNA -- MIRN204 microRNA, human -- cell motion -- cell proliferation -- genetics -- human -- melanoma -- tumor cell line -- Cell Line, Tumor -- Cell Movement -- Cell Proliferation -- Forkhead Transcription Factors -- Humans -- Melanoma -- MicroRNAs
Аннотация: MicroRNAs epigenetically regulate physiological and pathological processes. Previously, we found that miR-204-5p is expressed at low levels in melanoma cells, and an increase in its level leads to a change in proliferation, migration, and invasion of these cancer cells. Now, using bioinformatics analysis, it has been shown that the target of miR-204-5p is FOXC1 transcription factor, which is implicated in carcinogenesis. Using the luciferase reporter assay, it was found that miR-204-5p suppresses expression of the FOXC1 gene by binding to its 3' non-coding region. Transfection of small interfering RNA (siRNA) targeting FOXC1 into melanoma cells caused a decrease in miR-204-5p levels, which is consistent with the generally accepted concept of feedback regulation of miRNA expression by target genes. According to the results of the MTT test and fluorescence microscopy, the proliferation level of melanoma cells under the influence of siRNA to FOXC1 decreased 72 h after transfection. Changes in the ratio of cells by cell cycle phase were analyzed using flow cytometry. Regulatory relationships between FOXC1 and miR-204-5p, and an inhibitory effect of FOXC1 knockdown on melanoma cell proliferation were revealed. Based on the results, it can be assumed that miR-204-5p regulates proliferation of melanoma cells by affecting FOXC1 expression.

Scopus
Держатели документа:
Voino-Yasenetsky Krasnoyarsk State Medical University, Ministry of Health of the Russian Federation, Krasnoyarsk, 660022, Russian Federation
Siberian Branch of the Russian Academy of Sciences, Research Institute for Medical Problems in the North, Krasnoyarsk, 660022, Russian Federation
Biophysics Institute of the Siberian Branch of the RAS - Division of Federal Research Center "Krasnoyarsk Scientific Center of the Siberian Branch of the RAS", Krasnoyarsk, 660022, Russian Federation

Доп.точки доступа:
Dubovtseva, I. Y.; Aksenenko, M. B.; Nikolaeva, E. D.; Averchuk, A. S.; Moshev, A. V.; Savchenko, A. A.; Markova, S. V.; Ruksha, T. G.

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20.

Lake Shira, a Siberian salt lake: Ecosystem structure and function. 1. Major physico-chemical and biological features / T. A. Zotina, A. P. Tolomeyev, N. N. Degermendzhy // International Journal of Salt Lake Research. - 1999. - Vol. 8, Is. 3. - P211-232, DOI 10.1023/A:1009030120324 . - ISSN 1037-0544
Кл.слова (ненормированные):
Bacterioplankton -- Blue-green algae -- Meromictic salt lake -- Phytoplankton -- Vertical structure -- Zooplankton -- community composition -- ecosystem function -- ecosystem structure -- migration -- relative abundance -- saline lake -- vertical distribution -- Russian Federation -- Arctodiaptomus salinus -- Brachionus plicatilis -- Cyclotella tuberculata -- Dictyosphaerium tetrachotomum -- Hexarthra oxiuris -- Lyngbya contorta -- Microcystis ichtyoblabe
Аннотация: The specific composition, vertical distribution and daily migration of plankton in a meromictic salt lake, Lake Shira, have been investigated. The main structural components of the ecosystem are bacteria, algae and crustaceans. Since the late 1970s, blue-green algae are reported as dominant. Nowadays the phytoplankton is dominated by Lyngbya contorta, Microcystis ichtyoblabe (Cyanophyta), Cyclotella tuberculata (Bacillariophyta) and Dictyosphaerium tetrachotomum (Chlorophyta). The zooplankton of Lake Shira comprises Arctodiaptomus salinus (Copepoda), Brachionus plicatilis and Hexarthra oxiuris (Rotatoria). Investigation revealed a stratified vertical distribution of all dominant species except Cyclotella with a maximum at a depth of 12-15 m during the summer growth period. Zooplanktons differ in the pattern of distribution and daily migration, but most zooplankton tend to concentrate near the surface. The possible reasons for the vertical distribution of the plankton are discussed.

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

Доп.точки доступа:
Zotina, T.A.; Tolomeyev, A.P.; Degermendzhy, N.N.

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