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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Kalacheva G.S., Shchur L.A.
Заглавие : Composition of free fatty acids of the surface film of water and kinetic of self-purification from phenol in forest pond at ''bloom'' of Volvox aureus
Колич.характеристики :4 с
Место публикации : Dokl. Akad. Nauk: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 349, Is. 6. - С. 840-843. - ISSN 0869-5652
Примечания : Cited References: 5
Предметные рубрики: KRASNOYARSK RESERVOIR
MODELS
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakova O.V., Gladyshev M.I., Rozanov A.S., Peltek S.E., Trusova M.Y.
Заглавие : Spatial biodiversity of bacteria along the largest Arctic river determined by next-generation sequencing
Колич.характеристики :9 с
Коллективы : Attracting Leading Scientists to Russian Educational Institutions Program of the Russian Federation [11.G34.31.0014]; Siberian Federal University
Место публикации : FEMS Microbiol. Ecol.: WILEY-BLACKWELL, 2014. - Vol. 89, Is. 2. - С. 442-450. - ISSN 0168-6496, DOI 10.1111/1574-6941.12355. - ISSN 1574-6941
Примечания : Cited References: 36. - This work was supported by the Attracting Leading Scientists to Russian Educational Institutions Program of the Russian Federation, agreement 11.G34.31.0014, and by the project G-1 of Siberian Federal University, carried out according to Federal tasks of the Ministry of Education and Science of Russian Federation.
Предметные рубрики: DISSOLVED ORGANIC-MATTER
INLAND WATERS
CARBON
BACTERIOPLANKTON
COMMUNITY
GREENGENES
ECOSYSTEM
RESERVOIR
PATTERNS
PRIMERS
Ключевые слова (''Своб.индексиров.''): bacterial community--diversity--16s rrna gene--yenisei river
Аннотация: The biodiversity of bacterial communities along the Yenisei River at section c. 1800 km was studied using next-generation sequencing of 16S rRNA genes and common biodiversity indices. Overall, 3022 unique operational taxonomic units were identified. Actinobacteria and Proteobacteria were the dominant phyla at all sampling sites. The highest alpha-diversity values were found in the middle section of the studied river. The beta-diversity of bacterial assemblages in the river was related to the surrounding landscape (biome): three distinctly different bacterial assemblages occurred in sections of the river, situated in mountain taiga, plain taiga and in a region of permafrost, covered by forest-tundra and tundra. Tributaries arising from these different landscapes likely contributed substantially to the variations of Yenisei bacterial communities. In contrast to a prediction of the river continuum concept, the proportion of photoautotrophic Cyanobacteria in bacterial assemblages did not increase downstream, but peaked at the middle section.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : GLADYSHEV M.I., GRIBOVSKAYA I.V., ADAMOVICH V.V.
Заглавие : DISAPPEARANCE OF PHENOL IN WATER SAMPLES TAKEN FROM THE YENISEI RIVER AND THE KRASNOYARSK RESERVOIR
Место публикации : Water Res.: PERGAMON-ELSEVIER SCIENCE LTD, 1993. - Vol. 27, Is. 6. - С. 1063-1070. - 8. - ISSN 0043-1354, DOI 10.1016/0043-1354(93)90071-O
Примечания : Cited References: 20
Предметные рубрики: ORGANIC-COMPOUNDS
LAKE WATER
MINERALIZATION
BIODEGRADATION
KINETICS
MODELS
Ключевые слова (''Своб.индексиров.''): biodegradation--phenol
Аннотация: Using experimental microecosystems the kinetics of phenol disappearance in river and reservoir water were investigated. In river water the disappearance kinetics could be described by A first-order equation, the same kinetics took place in reservoir water before and after the period of ''bloom'' of blue-green algae. During the ''bloom'', the phenol seemed to be mineralized by bacteria which grew at the expense of another compound, and the model of best fit was the model of exponential growth and low concentration of the test substrate. In the river, two sections differed according to the difference between the mean values of the specific disappearance rates. In the reservoir these rates were lower than those in the river. In general the specific disappearance rate values did not correlate with the values of initial bacterioplankton density, the concentrations of inorganic nutrients nor the chemical oxygen demand. Conclusions about the integral influence of ecosystems on the disappearance rates and dependence of self-purification kinetics on the type of aquatic ecosystem were made.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : GLADYSHEV M.I., KALACHOVA G.S., SUSHCHIK N.N.
Заглавие : FREE FATTY-ACIDS OF WATER-SURFACE FILM AS INDICATORS OF PHASES OF PHYTOPLANKTON SEASONAL DYNAMICS IN THE SYDINSKY BAY OF THE KRASNOYARSK RESERVOIR
Колич.характеристики :4 с
Место публикации : DOKLADY AKADEMII NAUK SSSR: MEZHDUNARODNAYA KNIGA, 1991. - Vol. 318, Is. 4. - С. 1017-1020. - ISSN 0002-3264
Примечания : Cited References: 9
Предметные рубрики: MICROLAYER
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : GLADYSHEV M.I., GRIBOVSKAYA I.V.
Заглавие : PHENOL BIODEGRADATION IN THE YENISEI RIVER AND THE KRASNOYARSK RESERVOIR, RUSSIA
Колич.характеристики :5 с
Место публикации : HYDROLOGICAL, CHEMICAL AND BIOLOGICAL PROCESSES OF TRANSFORMATION AND TRANSPORT OF CONTAMINANTS IN AQUATIC ENVIRONMENTS. Ser. IAHS PUBLICATIONS: INT ASSOC HYDROLOGICAL SCIENCES, 1994. - Hydrochemistry 1993 Symposium on Hydrological, Chemical and Biological Processes of Transformation and Transport of Contaminants in Aquatic Environments (MAY 24-28, 1993, ROSTOV NA DONU, RUSSIA), Is. 219. - P217-221. - ISBN 0144-7815. - ISBN 0-947571-88-4
Примечания : Cited References: 0
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zavoruev V.V., Levin L.A.
Заглавие : Chlorophyll distribution in the fresh water reservoir and under ice
Колич.характеристики :3 с
Место публикации : Dokl. Akad. Nauk: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 348, Is. 3. - P419-421. - ISSN 0869-5652
Примечания : Cited References: 7
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Makhutova O.N., Gladyshev M.I., Sushchik N.N., Dubovskaya O.P., Buseva Z.F., Fefilova E.B., Semenchenko V.P., Kalachova G.S., Kononova O.N., Baturina M.A.
Заглавие : Comparison of fatty acid composition of cladocerans and copepods from lakes of different climatic zones
Колич.характеристики :10 с
Коллективы : Siberian Branch of the Russian Academy of Sciences; Ural Branch of the Russian Academy of Sciences [12-C-4-1011]; Russian Foundation for Basic Research [11-05-00246-a]; "Thematic Plans Program" of the Ministry of Education and Sciences of the Russian Federation (Siberian Federal University) [B-9]; Federal Program of the Ministry of Education "Scientific and Scientific-Pedagogical Personnel of an Innovative Russia" [16.740.11.0484]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2014. - Vol. 7, Is. 4. - С. 474-483. - ISSN 1995-4255, DOI 10.1134/S1995425514040076. - ISSN 1995-4263
Примечания : Cited References: 47. - This work was supported by Partner Project of the Siberian Branch of the Russian Academy of Sciences no. 8 and Ural Branch of the Russian Academy of Sciences no. 12-C-4-1011; grant from the Russian Foundation for Basic Research no. 11-05-00246-a; grants from "Thematic Plans Program" of the Ministry of Education and Sciences of the Russian Federation (Theme B-9 of Siberian Federal University); and a grant from the Federal Program of the Ministry of Education "Scientific and Scientific-Pedagogical Personnel of an Innovative Russia," national contract no. 16.740.11.0484.
Предметные рубрики: FRESH-WATER ZOOPLANKTON
DOCOSAHEXAENOIC ACID
SEASONAL DYNAMICS
TROPHIC TRANSFER
YENISEI RIVER
LIVE FOOD
GROWTH
TEMPERATURE
SESTON
RESERVOIR
Ключевые слова (''Своб.индексиров.''): cladocerans--copepods--fatty acids--cold lakes--warm lakes
Аннотация: We have studied the fatty acid (FA) contents and composition of cladocerans and copepods from warm and cold lakes. We have found no significant differences in FA percent levels and per carbon contents of cladocerans from warm and cold lakes or of copepods from warm and cold lakes. A discriminant analysis showed that all cladocerans differed from all copepods mainly due to the content of docosahexaenoic acid. Compared to cladocerans, copepods had significantly higher levels of all C22 polyunsaturated FA. Thus, we conclude that cladocerans and copepods in all environments had comparatively invariant taxon-specific compositions and contents of long-chain highly unsaturated fatty acids (HUFAs). According to HUFA content, all studied copepods can be regarded as a valuable food for fish.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : GLADYSHEV M.I., GRIBOVSKAIA I.V., SHCHUR L.A.
Заглавие : SEASONAL DYNAMICS OF THE KINETICS OF NATURAL PHENOL DECONTAMINATION IN THE SYDIN BAY OF THE KRASNOYARSK WATER RESERVOIR
Колич.характеристики :3 с
Место публикации : DOKLADY AKADEMII NAUK SSSR: MEZHDUNARODNAYA KNIGA, 1990. - Vol. 313, Is. 6. - P1512-1514. - ISSN 0002-3264
Примечания : Cited References: 4
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kravchuk E.S., Anisimova T.V.
Заглавие : Potential effect of macrophyte beds on number of akinetes of blue-green algae in littoral of a body of water
Место публикации : Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - С. 430-433. - ISSN 19954255 (ISSN) , DOI 10.1134/S1995425512040087
Ключевые слова (''Своб.индексиров.''): akinetes--blue-green algae--bottom sediments--resting stages--water bloom--algal bloom--cyanobacterium--lacustrine deposit--littoral environment--macrophyte--reservoir--siberia--chlorophyta
Аннотация: The distribution of the resting stages of blue-green algae (akinetes) in bottom sediments of the littoral of a small Siberian water reservoir has been studied. The irregularity (mosaicism) of the distribution of akinetes in the bottom sediments of the littoral has been demonstrated and the possible mechanisms of its formation have been analyzed. В© 2012 Pleiades Publishing, Ltd.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko A.F., Vasil'yev V.A.
Заглавие : Spectral brightness of inland waters and its correlation with phytoplankton content and hydrooptical characteristics
Место публикации : Hydrobiological Journal. - 1988. - Vol. 24, Is. 5. - С. 64-71. - ISSN 00188166 (ISSN)
Ключевые слова (''Своб.индексиров.''): cyanobacteria--diatom--light attenuation--pyrrhophyte--spectral brightness--ussr, dnieper--ussr, krasnoyarsk reservoir--algae--bacillariophyta--chlorophyta--cyanobacteria--dinophyceae--uncultured cyanobacterium
Аннотация: Spectral brightness coefficients are correlated with indices of vertical attenuation of horizontal irradiance, water transparency, phytoplankton chlorophyll content, and phytoplankton distribution. Data were obtained from Krasnoyarsk Reservoir and the Dnieper reservoirs. When diatoms and pyrrhophytes predominate, the maximum spectral brightness is in the vicinity of 580 nm, but when blue-green algae predominate the maxima are in the vicinity of 550 and 720 nm. -from Authors
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voinova O..., Gladyshev M.I., Volova T.G.
Заглавие : Comparative study of PHA degradation in natural reservoirs having various types of ecosystems
Место публикации : Macromol. Symp.: WILEY-V C H VERLAG GMBH, 2008. - Vol. 269: 4th European Symposium on Biopolymers (OCT 02-04, 2007, Kusadasi, TURKEY). - С. 34-37. - 4. - ISSN 1022-1360, DOI 10.1002/masy.zoo850906
Примечания : Cited References: 15
Предметные рубрики: POLYHYDROXYALKANOATES
BIODEGRADATION
DISAPPEARANCE
POLYESTERS
PHENOL
Ключевые слова (''Своб.индексиров.''): biodegradable polyesters--ecosystem--natural environment--pha--water reservoir
Аннотация: The kinetics of polyhydroxyalkanoate (PHA) degradation in natural environment in two water reservoirs having various ecological characteristics was studied. It was shown that biodegradation of polymer essentially depends on the environment temperature and inorganic composition of water. The processes of polymer degradation under aerobic and anaerobic conditions were compared. The polymer degradation was slower under anaerobic conditions.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko A.F.
Заглавие : A study of the spectral brightness and reflectance of the Krasnoyarsk and Dnepr reservoir systems
Место публикации : Oceanology. - 2005. - Vol. 45, Is. 2. - С. 186-193. - ISSN 00014370 (ISSN)
Ключевые слова (''Своб.индексиров.''): alga--brightness temperature--phytoplankton--remote sensing--reservoir--spectral reflectance--dneprodzerzhinsk reservoir--eastern europe--eastern hemisphere--eurasia--europe--krasnoyarsk [russian federation]--russian federation--ukraine--world--algae--bacillariophyta--chlorophyta--cyanobacteria--dinophyceae--protococcus--uncultured cyanobacterium
Аннотация: The brightness spectra of the Krasnoyarsk and Dnepr reservoir systems are presented for various periods of their development, from the beginning of their filling to the final stage of their formation. The curves of the surface distribution of chlorophyll a, which were remotely obtained from the brightness coefficient spectra, are found to be monotonic when diatomaceous, green protococcus, and dinophyte algae dominate in the phytoplankton. In the presence of blue-green algae, the curve of the distribution of phytoplankton on the surface is essentially irregular. The irregularities range from tens to hundreds of meters with sharp gradients of the phytoplankton concentration. The negative values of the VI color index change for positive ones when the concentration of chlorophyll a of the phytoplankton in the subsurface layer Cchl > 250-270 mg/m3. This is associated with the change in the species composition of the phytoplankton from the dominating diatom forms to bluegreen algae. Copyright В© 2005 by Pleiades Publishing, Inc.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko F.Ya., Aponasenko A.D., Filimonov V.S., Lopatin V.N., Sid'ko A.F.
Заглавие : The dissolved "yellow" matter as a natural indicator in hydrological investigations
Место публикации : Water Resources. - 1996. - Vol. 23, Is. 1. - С. 111-114. - ISSN 00978078 (ISSN)
Аннотация: The proportions of spectral indices of light absorption by water, dissolved "yellow" matter, phytoplankton pigments, and other suspended hydrosol particles contained in the water of Enisei River and Krasnoyarsk Reservoir were experimentally estimated. An optical method for determination of relative content and spatial distribution of water masses of mixing currents was proposed. В© 1996 MAHK Hayka/Interperiodica Publishing.
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14.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shevyrnogov A.P., Sid'ko A.F.
Заглавие : Ground truth methods as a part of space mapping of inland water phytopigment dynamics
Место публикации : SYNERGISTIC USE OF MULTISENSOR DATA FOR LAND PROCESSES. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON PRESS LTD, 1998. - Vol. 22: A3 1 Symposium of COSPAR Scientific Commission A on Synergistic Use of Multisensor Data for Land Processes at 31st COSPAR Scientific Assembly (JUL 14-21, 1996, BIRMINGHAM, ENGLAND), Is. 5. - С. 705-708. - 4. - ISBN 0273-1177, DOI 10.1016/S0273-1177(97)01137-X. - ISBN 0-08-043469-X
Примечания : Cited References: 5
Аннотация: Spectral radiance and reflectance of the Krasnoyarsk reservoir water surface were studied from 1974 until 1989, Spectral brightness coefficient (SBC) curves have been found to record chlorophyll absorption band in the red part of the spectrum lambda = 680 nm and spectral indices of "yellow matter" absorption in the short-wave part lambda = 400-500 nm, Blue-green algae SEC curves record phycocyanine absorption peak at lambda(max) = 630 mm. The peak is inherent in this type of algae only, (C) 1998 COSPAR, Published by Elsevier Science Ltd.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chernetskiy M..., Shevyrnogov A..., Shevnina S..., Vysotskaya G..., Sidko A...
Заглавие : Investigations of the Krasnoyarsk Reservoir waters based on the multispectral satellite data
Место публикации : Adv. Space Res.: ELSEVIER SCI LTD, 2009. - Vol. 43, Is. 2. - С. 206-213. - 8. - ISSN 0273-1177, DOI 10.1016/j.asr.2008.04.002
Примечания : Cited References: 24
Предметные рубрики: CHLOROPHYLL CONCENTRATION
Ключевые слова (''Своб.индексиров.''): modis--avhrr--classification--continental water bodies--spectral variability--phytoplankton--krasnoyarsk reservoir
Аннотация: In this work historical investigations and modern results of classification of the Krasnoyarsk Reservoir are presented. The paper presents results of studying the dynamics of phytopigments and other optically active components, using multispectral satellite data. Several approaches to interpreting satellite data for optically complex inland water bodies are offered. Based on results of historical investigations it is shown that the spatial distribution of phytoplankton in the reservoir stems back to the time of its formation. Color index in the red spectral region (CIR) is introduced. A relationship between the color index and chlorophyll concentration is investigated. The CIR, derived from the AVHRR data, has been found to be related to chlorophyll concentration. Based on MODIS data, the waters of the Krasnoyarsk Reservoir have been classified in accordance with their optical spectral variability, using the technique of unsupervised Iso-Data classification. An empirical relationship between multispectral MODIS data and the ground-truth measurements of chlorophyll concentration has been found. (C) 2008 COSPAR. Published by Elsevier Ltd. All rights reserved.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : GITELSON I.I., GLADYSHEV M.I., DEGERMENDZHY A.G., LEVIN L.A., SIDKO F.Y.
Заглавие : THE ECOLOGICAL BIOPHYSICS AND ITS PART IN INVESTIGATION OF AQUATIC ECOSYSTEMS
Место публикации : Biofizika: MEZHDUNARODNAYA KNIGA, 1993. - Vol. 38, Is. 6. - С. 1069-1078. - 10. - ISSN 0006-3029
Примечания : Cited References: 11
Предметные рубрики: SEASONAL DYNAMICS
RESERVOIR
BAY
Аннотация: The notion of ecological biophysics as a scientific discipline investigating physical processes and phenomena caused by functioning of the living super-organism systems is formulated. The three main constituents of the ecological biophysics are defined: elaboration of the monitoring methods of the basis of sensing of the biophysical fields (of bioluminescence and fluorescence), mathematical and physical modeling and investigation of the part of living organisms in the hydrophysical processes of the ecosystem scale. Examples of realization of the ecological biophysical approach in the process of investigations of the World Ocean, Lake Baikal, the reservoirs of Dnieper and Yenisei revers are given.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko F.Ya., Filimonov V.S., Aponasenko A.D., Shchur L.A., Lopatin V.N.
Заглавие : Specific features of spatial distribution of optical and hydrobiological indices of Krasnoyarskoe Reservoir waters
Место публикации : Water Resources. - 1996. - Vol. 23, Is. 4. - С. 426-430. - ISSN 00978078 (ISSN)
Аннотация: The results of measurements of primary optical characteristics, underwater irradiance, water transparency by a white disk, concentrations of Chl "a," and water temperature in the Krasnoyarskoe Reservoir are presented. It is shown that the change of phytoplankton concentration has a significant effect on the vector of spatial distribution of optical characteristics. The comparison of the euphotic layer depths, determined by primary optical characteristics, as well as measurements of underwater irradiance and transparency are carried out. В© 1996 MAHK Hayka/Interperiodica Publishing.
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18.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shevyrnogov A.P., Sid'ko A.F.
Заглавие : Ground truth methods as a part of space mapping of inland water phytopigment dynamics
Колич.характеристики :4 с
Место публикации : SYNERGISTIC USE OF MULTISENSOR DATA FOR LAND PROCESSES. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON PRESS LTD, 1998. - Vol. 22: A3 1 Symposium of COSPAR Scientific Commission A on Synergistic Use of Multisensor Data for Land Processes at 31st COSPAR Scientific Assembly (JUL 14-21, 1996, BIRMINGHAM, ENGLAND), Is. 5. - P705-708. - ISBN 0273-1177, DOI 10.1016/S0273-1177(97)01137-X. - ISBN 0-08-043469-X
Примечания : Cited References: 5
Аннотация: Spectral radiance and reflectance of the Krasnoyarsk reservoir water surface were studied from 1974 until 1989, Spectral brightness coefficient (SBC) curves have been found to record chlorophyll absorption band in the red part of the spectrum lambda = 680 nm and spectral indices of "yellow matter" absorption in the short-wave part lambda = 400-500 nm, Blue-green algae SEC curves record phycocyanine absorption peak at lambda(max) = 630 mm. The peak is inherent in this type of algae only, (C) 1998 COSPAR, Published by Elsevier Science Ltd.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M. I., Sushchik N. N., Shulepina S. P., Ageev A. V., Dubovskaya O. P., Kolmakova A. A., Kalachova G. S.
Заглавие : Secondary Production of Highly Unsaturated Fatty Acids by Zoobenthos Across Rivers Contrasting in Temperature
Колич.характеристики :12 с
Коллективы : Siberian Federal University [6.1089.214/K]; Russian Federal Tasks of Fundamental Research [51.1.1]
Место публикации : River Res. Appl.: WILEY-BLACKWELL, 2016. - Vol. 32, Is. 6. - С. 1252-1263. - ISSN 1535-1459, DOI 10.1002/rra.2945. - ISSN 1535-1467(eISSN)
Примечания : Cited References:55. - The work was supported by the project no. 6.1089.214/K of Siberian Federal University carried out according to Federal Tasks of Ministry of Education and Science of Russian Federation and by Russian Federal Tasks of Fundamental Research (project no. 51.1.1).
Предметные рубрики: AQUATIC ECOSYSTEMS
CLIMATE-CHANGE
YENISEI RIVER
ALPINE PONDS
LAKE
Ключевые слова (''Своб.индексиров.''): essential polyunsaturated fatty acids--river zoobenthos--secondary--production--biodiversity--water temperature--climate warming
Аннотация: Highly unsaturated fatty acids (HUFA), namely eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA), which are essential for many animals, including humans, are mainly produced in aquatic trophic webs. In fast-flowing rivers, macrozoobenthos is the main source of HUFA for fish and may be particularly vulnerable to thermal alterations associated with climate change. We studied benthic communities in a unique natural ecosystem: the Yenisei River downstream of the dam of Krasnoyarsk Hydroelectric Power Station with very low temperature in summer because of discharge of cold water from deep in the reservoir and its tributaries with high summer temperature. This natural experiment' allowed to get rid of confounding factors, such as differences in light, seasonality, geology (biogeochemistry) and biogeography (regional species pools). As found, in spite of an increase of biodiversity and rates of daily production in warm rivers compared with cold sites, DHA and partly EPA production of zoobenthos decreased with the increase of temperature because of changes in species composition. Thus, in a climate warming context, we can predict a decrease of production of these HUFA by river zoobenthos and thereby a diminishing of their supply for fish and next to humans. Copyright (c) 2015 John Wiley & Sons, Ltd.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N. N., Rudchenko A. E., Gladyshev M. I.
Заглавие : Effect of season and trophic level on fatty acid composition and content of four commercial fish species from Krasnoyarsk Reservoir (Siberia, Russia)
Место публикации : Fish. Res.: Elsevier B.V., 2017. - Vol. 187. - С. 178-187. - ISSN 01657836 (ISSN) , DOI 10.1016/j.fishres.2016.11.016
Ключевые слова (''Своб.индексиров.''): fatty acids--piscivorous and omnivorous fish--season--stable isotopes--trophic level
Аннотация: Two groups of factors, phylogenetic and ecological, are presently regarded as controlling fatty acid composition of fish, including essential eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids. Environmental effects, e.g., trophic position, temperature and/or seasonality, were previously studied using sums of fatty acids or only their level data. We tested the hypothesis that differences in trophic levels of piscivorous (pike and perch) and omnivorous (roach and bream) fish from a mesotrophic reservoir allow discriminating levels and contents of individual fatty acids, especially EPA and DHA. The more established measurements, i.e., stomach contents and carbon and nitrogen stable isotopes in fish muscles, were also carried out to provide linkages between the different ecological tracers, fatty acids versus stable isotopes, and matching the methods for long-term food sources (fatty acids and stable isotopes) and recent foraging (stomach content analysis). We also studied a putative influence of seasonality. Similar to other studies, there were seasonal changes in fatty acid composition and contents of two fish, perch and roach, due to direct and indirect effects of water temperature. Meanwhile, the piscivorous and omnivorous species captured in the same month, were explicitly differentiated on a base of stable isotopes and fatty acids. Significantly higher percentages and contents of DHA in piscivorous fish, perch and pike, relatively to those in roach and bream, likely indicated a higher trophic transfer efficiency for this essential fatty acid. All the fishes have commercial importance for regional fishery and are harvested from the studied reservoir for human nutrition. Regarding content of EPA + DHA (mg g?1 fish) as the indicator of nutritive value for humans, pike had the highest nutritive value, roach and perch had intermediate overlapped values, and bream was of the least benefit. © 2016 Elsevier B.V.
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