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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V.I., Levin L.A., Dubovskaya O.P., Gladyshev M.I.
Заглавие : A circadian rhythm of grazing of microalgae by a laboratory culture of Ceriodaphnia quadrangula
Колич.характеристики :4 с
Место публикации : Biofizika: MEZHDUNARODNAYA KNIGA, 2002. - Vol. 47, Is. 4. - P673-676. - ISSN 0006-3029
Примечания : Cited References: 12
Предметные рубрики: CLOSED CULTIVATORS
FLUORESCENCE
ZOOPLANKTON
Ключевые слова (''Своб.индексиров.''): daily rhythm of grazing--fluorescence--microalgae--flowing-through cultivator--photoperiod--statistical spectral analysis
Аннотация: The circadian rhythm of grazing of microalgae by a laboratory culture of Ceriodaphnia quadrangula under continuous illumination was studied by continuous registration of chlorophyll fluorescence at the outlet of a flow-through cultivator. A culture of green alga Chlorella vulgaris was used as a feed. The data obtained were treated by the statistical spectral analysis. It was found that animals preliminarily grown under a 12 h light : 12 h dark regime and transferred to constant light showed two maxima in the circadian rhythm of grazing with periods of 0.7 and 1.1 h. Animals preliminarily grown under constant light showed no circadian rhythm of grazing. It was concluded that the circadian rhythm of grazing of C quadrangula has endogenous nature and can change according to light conditions.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prokopkin I.G., Mooij W.M., Janse J.H., Degermendzhy A.G.
Заглавие : A general one-dimensional vertical ecosystem model of Lake Shira (Russia, Khakasia): Description, parametrization and analysis
Место публикации : Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - С. 585-618. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-010-9326-8
Ключевые слова (''Своб.индексиров.''): 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.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prokopkin I. G., Zadereev E. S.
Заглавие : A model study of the effect of weather forcing on the ecology of a meromictic Siberian lake
Место публикации : J. Oceanology Limnology: Science Press, 2018. - Article in press. - ISSN 20965508 (ISSN) , DOI 10.1007/s00343-018-7329-9
Ключевые слова (''Своб.индексиров.''): food web--meromictic lake--numerical model--sensitivity analysis--stratification--weather forcing
Аннотация: We used a Lake Shira numerical model to estimate the response of the ecosystem of a saline meromictic lake to variations in weather parameters during the growing season. The sensitivity analysis of the model suggests that compared to other external (nutrient inflows) and internal (spring biomasses of food-web components) factors, weather parameters are among the most influential for both mixolimnetic (phyto- and zooplankton) and monimolimnetic (purple sulfur bacteria, sulfur reducing bacteria and hydrogen sulfide) food-web components. Calculations with different weather scenarios shows how changes in the water temperature and mixing depth affect mixolimnetic and monimolimnetic food-web components and the depth of the oxic-anoxic interface in a meromictic lake. When weather forcing stimulates an increase in the biomass of food-web components in the mixolimnion, it produces cascading effects that lead to three results: 1) a higher content of detritus in the water column; 2) a higher content of hydrogen sulfide in the monimolimnion; 3) raising of the oxic-anoxic interface closer to the water-air surface. This cascading effect is complicated by the negative correlation between two light dependent primary producers located at different depths—phytoplankton in the mixolimnion and purple sulfur bacteria at the oxic-anoxic interface. Thus, weather conditions that stimulate higher phytoplankton biomass are associated with a higher detritus content and lower biomass of purple sulfur bacteria, a higher content of hydrogen sulfide and a shallower oxic-anoxic interface. The same weather conditions (higher wind, lower cloud cover, and lower air temperature) promote a scenario of less stable thermal stratification. Thus, our calculations suggest that weather parameters during the summer season strongly control the mixing depth, water temperature and the mixolimnetic food web. An effect of biogeochemical and physical interactions on the depth of the oxicanoxic interface is also detectable. However, intra- and interannual climate and weather effects will be more important for the control of meromixis stability. © 2018, Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakova A. A., Kolmakov, V., I
Заглавие : Amino Acid Composition of Green Microalgae and Diatoms, Cyanobacteria, and Zooplankton (Review)
Колич.характеристики :10 с
Коллективы : State task of the basic research program of the Russian Federation [VI.51.S]
Место публикации : Inland Water Biol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2019. - Vol. 12, Is. 4. - С. 452-461. - ISSN 1995-0829, DOI 10.1134/S1995082919040060. - ISSN 1995-0837(eISSN)
Примечания : Cited References:72. - State task of the basic research program of the Russian Federation, topic number VI.51.S.
Предметные рубрики: BIOCHEMICAL-COMPOSITION
PROTEIN-CONTENT
CRUSTACEAN ZOOPLANKTON
Аннотация: We have reviewed foreign and domestic literature devoted to the study of the amino acid (AA) composition of aquatic organisms representing major groups of producers (green microalgae and diatoms, and cyanobacteria) and primary consumers (zooplankton). Based on published data, we estimate the composition of essential and nonessential AAs of microalgae, cyanobacteria, and zooplankton and determine their differences. It is concluded that the AA composition of major groups of plankton is heterogeneous. The role of AAs as a limiting factor for the development of herbivorous zooplankton is discussed. The prospects and the need for further study of AA composition in order to develop a complete theory of functioning of aquatic ecosystems have been demonstrated.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakova A. A., Kolmakov V. I.
Заглавие : Amino Acid Composition of Green Microalgae and Diatoms, Cyanobacteria, and Zooplankton (Review)
Место публикации : Inland Water Biol.: Pleiades Publishing, 2019. - Vol. 12, Is. 4. - С. 452-461. - ISSN 19950829 (ISSN) , DOI 10.1134/S1995082919040060
Аннотация: Abstract: We have reviewed foreign and domestic literature devoted to the study of the amino acid (AA) composition of aquatic organisms representing major groups of producers (green microalgae and diatoms, and cyanobacteria) and primary consumers (zooplankton). Based on published data, we estimate the composition of essential and nonessential AAs of microalgae, cyanobacteria, and zooplankton and determine their differences. It is concluded that the AA composition of major groups of plankton is heterogeneous. The role of AAs as a limiting factor for the development of herbivorous zooplankton is discussed. The prospects and the need for further study of AA composition in order to develop a complete theory of functioning of aquatic ecosystems have been demonstrated. © 2019, Pleiades Publishing, Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V. I., Kolmakova A. A.
Заглавие : Amino acids in prospective feeds for fish aquaculture: A review of experimental data
Место публикации : J. Sib. Fed. Univ. - Biol.: Siberian Federal University, 2020. - Vol. 13, Is. 4. - С. 424-442. - ISSN 19971389 (ISSN), DOI 10.17516/1997-1389-0332
Аннотация: Total dependence of aquaculture on imports of feeds can significantly compromise Russia's food supply security; hence the task of designing new domestic feeds is of primary importance. A major challenge of world aquaculture is providing fish with a balanced diet, in particular, with a well-balanced composition of amino acids. In this review, we analyze international publications on the composition of amino acids in fish feed over the last two years. We summarize the data on the amino acid composition of prospective food sources for fish aquaculture: agricultural crops, insects, annelids, higher crustaceans, animal waste, phytoplankton, zooplankton, macrophytes, and microorganisms. We performed a comparative analysis of the composition of amino acids in promising aquafeed sources and fish flour traditionally used for fish feeding. Based on the results, we conclude that each of the examined food sources can be used as a component of fish nutrition and offers realistic prospects for production of alternative feeds. To ensure high quality of fish aquaculture products, the priority should be given to development of technologies which allow to control amino acid feed composition during the production process with respect to fish species-specific needs. It is hoped that this review will be useful to researchers and practitioners involved in designing and producing new domestic aquafeed for fish. © Siberian Federal University. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tolomeyev A.P., Zadereev Y.S.
Заглавие : An in situ method for the investigation of vertical distributions of zooplankton in lakes: Test of a two-compartment enclosure
Место публикации : Aquatic Ecology. - 2005. - Vol. 39, Is. 1-2. - С. 181-188. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-004-5732-0
Ключевые слова (''Своб.индексиров.''): 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.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tolomeyev A.P., Zadereev Y.S.
Заглавие : An in situ method for the investigation of vertical distributions of zooplankton in lakes: test of a two-compartment enclosure
Колич.характеристики :8 с
Место публикации : Aquat. Ecol.: SPRINGER, 2005. - Vol. 39, Is. 2. - P181-188. - ISSN 1386-2588, DOI 10.1007/s10452-004-5732-0
Примечания : Cited References: 21
Предметные рубрики: MIGRATION
DAPHNIA
RADIATION
COPEPODS
EXPOSURE
PATTERNS
LIGHT
Ключевые слова (''Своб.индексиров.''): 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.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prokopkin I., Makhutova O., Kravchuk E., Sushchik N., Anishchenko O., Gladyshev M.
Заглавие : Assessing the reliability of quantitative fatty acid signature analysis and compound-specific isotope analysis-based mixing models for trophic studies
Место публикации : Biomolecules: MDPI, 2021. - Vol. 11, Is. 11. - Ст.1590. - ISSN 2218273X (ISSN), DOI 10.3390/biom11111590
Аннотация: The study of the trophic relationships of aquatic animals requires correct estimates of their diets. We compared the quantitative fatty acid signature analysis (QFASA) and the isotope?mixing model IsoError, based on the compound?specific isotope analysis of fatty acids (CSIA?FA), which are potentially effective models for quantitative diet estimations. In a 21?day experiment, Daphnia was fed a mixture of two food items, Chlorella and Cryptomonas, which were supplied in nearly equal proportions. The percentages and isotope values of the FAs of the algal species and Daphnia were measured. The IsoError based on CSIA?FA gave an estimation of algae consumption using only one FA, 18:3n?3. According to this model, the proportion of consumption of Chlorella decreased while the proportion of consumption of Cryptomonas increased during the experiment. The QFASA model was used for two FA subsets—the extended?dietary subset, which included sixteen FAs, and the dietary one, which included nine FAs. According to both subsets, the portion of consumed Chlorella decreased from Day 5 to 10 and then increased at Day 21. The comparison of the two model approaches showed that the QFASA model is a more reliable method to determine the contribution of different food sources to the diet of zooplankton than the CSIA?based mixing model. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Makhutova O.N., Kalachova G.S., Kravchuk E.S., Ivanova E.A.
Заглавие : Associating particulate essential fatty acids of the ?3 family with phytoplankton species composition in a Siberian reservoir
Место публикации : Freshwater Biology. - 2004. - Vol. 49, Is. 9. - С. 1206-1219. - ISSN 00465070 (ISSN) , DOI 10.1111/j.1365-2427.2004.01263.x
Ключевые слова (''Своб.индексиров.''): 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.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Makhutova O.N., Kalachova G.S., Kravchuk E.S., Ivanova E.A.
Заглавие : Associating particulate essential fatty acids of the omega 3 family with phytoplankton species composition in a Siberian reservoir
Колич.характеристики :14 с
Место публикации : Freshw. Biol.: BLACKWELL PUBLISHING LTD, 2004. - Vol. 49, Is. 9. - P1206-1219. - ISSN 0046-5070, DOI 10.1111/j.1365-2427.2004.01263.x
Примечания : Cited References: 48
Предметные рубрики: ENCLOSED EXPERIMENTAL ECOSYSTEM
FOOD QUALITY
BENTHIC INVERTEBRATES
GREEN-ALGAE
CYANOBACTERIA
DAPHNIA
MICROALGAE
ZOOPLANKTON
LAKE
APHANIZOMENON
Ключевые слова (''Своб.индексиров.''): cyanobacteria--diatoms--fatty acids--food quality--species composition
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 omega3 fatty acids because of their potential importance for zooplankton nutrition. 2. Total diatoms were related to the 20:5omega3 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 18:3omega3 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 22:6omega3 (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.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S., Tolomeev A.P., Drobotov A.V.
Заглавие : Asynchronous vertical migrations of zooplankton in stratified lakes
Место публикации : Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - С. 443-449. - ISSN 19954255 (ISSN) , DOI 10.1134/S1995425512040166
Ключевые слова (''Своб.индексиров.''): 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.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fefilova E., Dubovskaya O., Frolova L., Abramova E., Kononova O., Nigamatzyanova G., Zuev I., Kochanova E.
Заглавие : Biogeographic patterns of planktonic and meiobenthic fauna diversity in inland waters of the Russian Arctic
Место публикации : Freshw. Biol.: Blackwell Publishing Ltd, 2020. - Article in press. - ISSN 00465070 (ISSN), DOI 10.1111/fwb.13624
Аннотация: Broad-scale assessment of biodiversity is needed for detection of future changes across substantial regions of the Arctic. Presently, there are large data and information gaps in species composition and richness of the freshwater planktonic and meiobenthos communities of the Russian Arctic. Analysis of these data is very important for identifying the spatial distribution and temporal changes in species richness and diversity of rotifers, cladocerans, and copepods in the continental Russian Arctic. We investigated biogeographic patterns of freshwater plankton and meiobenthos from c. 67° to 73°N by analysing data over the period 1960–2017. These data include information on the composition of rotifers, cladocerans, and copepods obtained from planktonic and meiobenthic samples, as well as from subfossil remains in bottom sediments of seven regions from the Kola Peninsula in the west, to the Indigirka River Basin (east Siberia) in the east. Total richness included 175 species comprised of 49 rotifer genera, 81 species from 40 cladoceran genera, and 101 species from 42 genera of calanoid, cyclopoid, and harpacticoid copepods. Longitudinal trends in rotifer and micro-crustacean diversity were revealed by change in species composition from Europe to eastern Siberia. The most common and widespread species were 19 ubiquitous taxa that included Kellicottia longispina (Rotifera), Chydorus sphaericus s. lat. (Cladocera), Heterocope borealis, Acanthocyclops vernalis, and Moraria duthiei (Copepoda). The highest number of rare species was recorded in the well-studied region of the Bolshezemelskaya tundra and in the Putorana Plateau. The total number of copepod and rotifer species in both Arctic lakes and ponds tended to increase with latitude. Relative species richness of copepods was positively associated with waterbody area, elevation, and precipitation, while relative species richness of cladocerans was positively related to temperature. This result is consistent with known thermophilic characteristics of cladocerans and the cold tolerance properties of copepods, with the former being dominant in shallow, warmer waterbodies of some western regions, and the latter being dominant in large cold lakes and waterbodies of eastern regions. Rotifers showed a negative association with these factors. Alpha- and ?-diversity of zooplankton in the Russian Arctic were strongly related to waterbody type. Lake zooplankton communities were more diverse than those in pond and pool systems. Moreover, the highest ?-diversity values were observed in regions that showed a greater breadth in latitude and highly heterogeneous environmental conditions and waterbody types (Bolshezemelskaya tundra and Putorana Plateau). Redistribution of freshwater micro-fauna caused by human activities occurred in the 1990s and 2000s. As a result of climate warming, a few cladoceran species appear to have extended their range northward. Nevertheless, the rotifer and micro-crustacean fauna composition and diversity of the majority of Arctic regions generally remain temporally conservative, and spatial differences in composition and species richness are chiefly associated with the differences between the warmer European and colder east Siberian climates. © 2020 John Wiley & Sons Ltd.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fefilova, Elena, Dubovskaya, Olga, Frolova, Larisa, Abramova, Ekaterina, Kononova, Olga, Nigamatzyanova, Gulnara, Zuev, Ivan, Kochanova, Elena
Заглавие : Biogeographic patterns of planktonic and meiobenthic fauna diversity in inland waters of the Russian Arctic
Колич.характеристики :17 с
Коллективы : Federal Tasks of Department of Animals Ecology of the Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences [AAAA-A17-117112850235-2]; Institute of Biophysics of Federal Research Center "Krasnoyarsk Science Center" of Siberian Branch of Russian Academy of Sciences [51.1.1]; Siberian Federal University [FSRZ-2020-0006]
Место публикации : Freshw. Biol.: WILEY, 2020. - Article in press. - ISSN 0046-5070, DOI 10.1111/fwb.13624. - ISSN 1365-2427(eISSN)
Примечания : Cited References:63. - We would like to thank A. Kotov, N. Korovchinsky, A. Sinev, E. Bekker, N. Smirnov (all from Severtsov Institute of Ecology and Evolution of RAS) for their assistance in Cladocera identification. We are very grateful to Jennifer Lento (University of New Brunswick, Canada) for helping us obtain elevation, temperature, and precipitation data from World Climate and ArcticDEM (NGA-NSF). We are also grateful to Willem Goedkoop for helpful comments on an earlier version of the manuscript. The study was performed in part as Federal Tasks of Department of Animals Ecology of the Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences (AAAA-A17-117112850235-2), and also of Institute of Biophysics of Federal Research Center "Krasnoyarsk Science Center" of Siberian Branch of Russian Academy of Sciences (project No. 51.1.1) and the Siberian Federal University (project No. FSRZ-2020-0006). Monitoring investigations in the Lena River Delta were conducted under the framework of Russian-German, "Lena" expeditions (Alfred Wegener Institute, Potsdam, Germany) with logistic and technical support of Scientific Research Station "Samoylov Island" (Trofimuk Institute of Petroleum-Gas, Geology and Geophysics SB RAS, Novosibirsk). We are grateful to three anonymous reviewers, Guest Editor, Dr Joseph Culp, and the Chief Editor, Prof. Belinda Robson for their useful comments to improve the manuscript.
Предметные рубрики: GLOBAL DIVERSITY
CRUSTACEAN ZOOPLANKTON
CLADOCERA
ANOMOPODA
Аннотация: Broad-scale assessment of biodiversity is needed for detection of future changes across substantial regions of the Arctic. Presently, there are large data and information gaps in species composition and richness of the freshwater planktonic and meiobenthos communities of the Russian Arctic. Analysis of these data is very important for identifying the spatial distribution and temporal changes in species richness and diversity of rotifers, cladocerans, and copepods in the continental Russian Arctic. We investigated biogeographic patterns of freshwater plankton and meiobenthos fromc. 67 degrees to 73 degrees N by analysing data over the period 1960-2017. These data include information on the composition of rotifers, cladocerans, and copepods obtained from planktonic and meiobenthic samples, as well as from subfossil remains in bottom sediments of seven regions from the Kola Peninsula in the west, to the Indigirka River Basin (east Siberia) in the east. Total richness included 175 species comprised of 49 rotifer genera, 81 species from 40 cladoceran genera, and 101 species from 42 genera of calanoid, cyclopoid, and harpacticoid copepods. Longitudinal trends in rotifer and micro-crustacean diversity were revealed by change in species composition from Europe to eastern Siberia. The most common and widespread species were 19 ubiquitous taxa that includedKellicottia longispina(Rotifera),Chydorus sphaericuss. lat. (Cladocera),Heterocope borealis,Acanthocyclops vernalis, andMoraria duthiei(Copepoda). The highest number of rare species was recorded in the well-studied region of the Bolshezemelskaya tundra and in the Putorana Plateau. The total number of copepod and rotifer species in both Arctic lakes and ponds tended to increase with latitude. Relative species richness of copepods was positively associated with waterbody area, elevation, and precipitation, while relative species richness of cladocerans was positively related to temperature. This result is consistent with known thermophilic characteristics of cladocerans and the cold tolerance properties of copepods, with the former being dominant in shallow, warmer waterbodies of some western regions, and the latter being dominant in large cold lakes and waterbodies of eastern regions. Rotifers showed a negative association with these factors. Alpha- and beta-diversity of zooplankton in the Russian Arctic were strongly related to waterbody type. Lake zooplankton communities were more diverse than those in pond and pool systems. Moreover, the highest beta-diversity values were observed in regions that showed a greater breadth in latitude and highly heterogeneous environmental conditions and waterbody types (Bolshezemelskaya tundra and Putorana Plateau). Redistribution of freshwater micro-fauna caused by human activities occurred in the 1990s and 2000s. As a result of climate warming, a few cladoceran species appear to have extended their range northward. Nevertheless, the rotifer and micro-crustacean fauna composition and diversity of the majority of Arctic regions generally remain temporally conservative, and spatial differences in composition and species richness are chiefly associated with the differences between the warmer European and colder east Siberian climates.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalacheva G.S., Zadereev E.S., Gubanov V.G., Gribovskaya I.V.
Заглавие : Chemical composition of water conditioned by crowded Moina macracopa (Crustacea : Cladocera)
Колич.характеристики :5 с
Место публикации : Russ. J. Ecol.: MAIK NAUKA/INTERPERIODICA, 2000. - Vol. 31, Is. 2. - P113-117. - ISSN 1067-4136, DOI 10.1007/BF02828365
Примечания : Cited References: 25
Предметные рубрики: DAPHNIA-PULEX
ZOOPLANKTON
PARAMETERS
INDUCTION
Ключевые слова (''Своб.индексиров.''): cladocera--metabolic products--chemical analysis--chemical composition
Аннотация: The chemical composition of water conditioned by colonies of Moina macrocopa and involved in the regulation of their life cycle was analyzed in comparison with water samples from natural water bodies. Dechlorinated tap water was used as the control medium. The results showed that metabolism of crustaceans leads to an increase in the concentrations of phosphorus and nitrogen in all forms, the appearance of protein and carbohydrate fractions, and changes in the composition of lipid fractions in the water conditioned by their colonies. The contents of all organic components are very low, which makes their identification difficult. Concentrations of substances identified in the conditioned water do not exceed those occurring in nature.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S.
Заглавие : Chemical interactions between planktonic crustaceans
Колич.характеристики :9 с
Место публикации : Zhurnal Obshchei Biol.: MEZHDUNARODNAYA KNIGA, 2002. - Vol. 63, Is. 2. - P159-167. - ISSN 0044-4596
Примечания : Cited References: 52
Предметные 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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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S.
Заглавие : Chemical Interactions between Planktonic Crustaceans
Место публикации : Zhurnal Obshchei Biologii. - 2002. - Vol. 63, Is. 2. - С. 166-167. - ISSN 00444596 (ISSN)
Ключевые слова (''Своб.индексиров.''): animal--animal communication--chemistry--crustacea--ecosystem--physiology--phytoplankton--plankton--review--zooplankton--animal communication--animals--crustacea--ecosystem--phytoplankton--plankton--zooplankton
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 (non-specidic) influence - toxic substances of "biocondition substances" according to classification of Novikov and Kharlamova (2000).
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18.

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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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E. S., Drobotov A. V., Lopatina T. S., Ovchinnikov S. D., Tolomeev A. P.
Заглавие : Comparison of rapid methods used to determine the concentration, size structure and species composition of algae
Место публикации : J. Sib. Fed. Univ. - Biol.: Siberian Federal University, 2021. - Vol. 14, Is. 1. - С. 5-27. - ISSN 19971389 (ISSN), DOI 10.17516/1997-1389-0338
Аннотация: Traditionally, the abundance, cell size distribution and species identification of algae are determined by microscopic counts. In recent years, various rapid methods have been developed for routine algal studies. However, each of these methods has its drawbacks. It is important for aquatic ecologists to understand the advantages, disadvantages, and limitations of these methods. We compared the sensitivity of three rapid methods (multichannel fluorimeter FluoroProbe, imaging flow cytometer FlowCam, and CASY particle counter) to changes in cell abundance of three algae species (Chlorella vulgaris Beyerinck, Arthrospira platensis Gomont, and Nostoc sp.). We also assessed the ability of rapid methods to estimate the cell abundance of different species in the mixed samples. All instruments showed high sensitivity to changes in the cell abundance of different algae species and a mixture of these species. Any one of these methods, once calibrated, can be reliably used to estimate the abundance of a single-species/laboratory culture of microalgae. At the same time, FlowCam, without preliminary calibration, recorded the cell abundance closest to microscopic counts. When analysing a mixture of three microalgae differing in their cell sizes and spectral characteristics, FluoroProbe showed the highest accuracy in assessing the proportions of species in the mixture and FlowCam - in assessing their abundance. To study mixtures of algae and/or natural phytoplankton communities, it is advisable to use jointly a flow cytometer and a multichannel fluorimeter. The images of algae saved by the flow cytometer, if necessary, can be used to identify them, with a certain accuracy, to the species. Information on cells size and spectral characteristics obtained by two methods will be detailed enough to perform such common tasks as studying trophic interactions between phyto- and zooplankton or creating warning systems to inform of unwanted blooms of phytoplankton and their individual groups (for example, cyanobacteria). © Siberian Federal University. All rights reserved.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Makhutova O.N., Dubovskaya O.P., Kravchuk E.S., Kalachova G.S., Khromechek E.B.
Заглавие : Correlations between fatty acid composition of seston and zooplankton and effects of environmental parameters in a eutrophic Siberian reservoir
Место публикации : Limnologica. - 2010. - Vol. 40, Is. 4. - С. 343-357. - ISSN 00759511 (ISSN) , DOI 10.1016/j.limno.2009.12.004
Ключевые слова (''Своб.индексиров.''): eicosapentaenoic acid--fatty acids--phytoplankton--temperature--zooplankton--canonical analysis--correlation--eutrophic environment--fatty acid--multivariate analysis--phytoplankton--seasonal variation--seston--taxonomy--temperature effect--water temperature--zooplankton--algae--bacillariophyta--ciliophora--cyanobacteria--cyclopoida--rotifera
Аннотация: During two sampling seasons we analyzed on weekly basis fatty acid (FA) composition of seston fraction 130?m and zooplankton fraction 130?m, and compared them using a multivariate canonical correlation analysis (CCA). Besides, we evaluated a possible impact of water temperature and inorganic nutrients on FA composition of the seston and the zooplankton.In spite of significant differences in percentages of several individual FAs, we found very strong canonical correlation (cross-correlation, 1-week lag) between FA composition of the seston and the zooplankton. The most important factor, providing the overall canonical cross-correlation between FA profiles of the seston and the zooplankton fractions was eicosapentaenoic acid (20:5?3, EPA). FA composition of the zooplankton fraction had comparatively poor correlations with taxonomic composition of the zooplankton. Thus, seasonal variations of FA composition of the zooplankton were determined primarily by seasonal changes in FA composition of the seston, rather than by taxonomic differences of FA profiles between rotifers, cyclopoids and cladocerans. FA composition of the seston was strongly affected by its taxonomic composition, namely by that of phytoplankton. According to CCA, the highest factor loadings pertained to diatoms interacting with their marker acids, including EPA, and cyanobacteria and greens, interacting with their marker acids. Ciliates and small rotifers composed considerable and sometimes major part of the seston biomass, but according to CCA their contributions to seasonal variations of the total FA profile of the seston were insignificant. This finding indirectly support the conclusion of the other authors, that the main source of FAs presented in ciliates and rotifers must be sought in algae and that they do not modify FA composition of food consumed, apart from repackaging it.Water temperature was the principal environmental parameter which drove the overall variations of FA composition. Factor loadings for the inorganic nutrients were comparatively negligible. The main contribution in the seasonal variation of FA composition of the seston was given by negative interaction between water temperature and percentage of EPA in the seston. В© 2009 Elsevier GmbH.
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