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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Kalachova G.S., Makhutova O.N.
Заглавие : Stable isotope composition of fatty acids in organisms of different trophic levels in the yenisei river
Место публикации : PLoS ONE. - 2012. - Vol. 7, Is. 3. - Ст.e34059. - ISSN 19326203 (ISSN) , DOI 10.1371/journal.pone.0034059
Ключевые слова (''Своб.индексиров.''): carbon 13--fatty acid--carbon--apatania crymophila--article--benthos--eulimnogammarus viridis--fatty acid analysis--fatty acid desaturation--fontinalis antipyretica--food chain--food web--freshwater fish--isotope analysis--lipid composition--microalga--moss--nonhuman--pelagic zone--river ecosystem--russian federation--stable isotope analysis--thymallus arcticus--trophic level--animal--chemistry--larva--metabolism--river--bryophyta--gammaridae--trichoptera--animals--carbon isotopes--fatty acids--food chain--larva--microalgae--rivers
Аннотация: We studied four-link food chain, periphytic microalgae and water moss (producers), trichopteran larvae (consumers I), gammarids (omnivorous - consumers II) and Siberian grayling (consumers III) at a littoral site of the Yenisei River on the basis of three years monthly sampling. Analysis of bulk carbon stable isotopes and compound specific isotope analysis of fatty acids (FA) were done. As found, there was a gradual depletion in 13C contents of fatty acids, including essential FA upward the food chain. In all the trophic levels a parabolic dependence of ? 13C values of fatty acids on their degree of unsaturation/chain length occurred, with 18:2n-6 and 18:3n-3 in its lowest point. The pattern in the ? 13C differences between individual fatty acids was quite similar to that reported in literature for marine pelagic food webs. Hypotheses on isotope fractionation were suggested to explain the findings. В© 2012 Gladyshev et al.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Kravchuk E.S., Ivanova E.A., Ageev A.V., Kalachova G.S.
Заглавие : Seasonal dynamics of long-chain polyunsaturated fatty acids in littoral benthos in the upper Yenisei river
Место публикации : Aquatic Ecology. - 2007. - Vol. 41, Is. 2. - С. 349-365. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-006-9065-z
Ключевые слова (''Своб.индексиров.''): essential compounds--periphytonic microalgae--riverine food chain--zoobenthos--amphipod--annelid--benthos--biomass--diatom--dominance--fatty acid--food chain--larva--littoral environment--seasonal variation--eurasia--krasnoyarsk [russian federation]--russian federation--yenisei river--amphipoda--annelida--arthropoda--bacillariophyta--chironomidae--gammaridae--hexapoda--invertebrata--oligochaeta (metazoa)--trichoptera
Аннотация: We studied composition and concentrations of fatty acids (FAs) in benthos from pebbly littoral region of the Yenisei River in a sampling site near Krasnoyarsk city (Siberia, Russia) for 1 year from March 2003 to February 2004. Special attention was paid to major long-chain polyunsaturated fatty acids (PUFAs) of the ?3 family: eicosapentaenoic acid (EPA, 20:5?3) and docosahexaenoic acids (DHA, 22:6?3). In phytobenthos, which was dominated by diatoms, the annual maxima of EPA and DHA pool occurred in spring and early summer. In zoobenthos, EPA and DHA pool peaked in autumn, due mainly to an increase of the biomass of dominant taxa (gammarids) and to a moderate increase of the PUFA content per body weight. Seasonal peaks of EPA in overwintering insect larvae (chironomids and caddisflies) generally coincided with those of biomass of these larvae, while there was no such trend for amphipods and oligochaetes. In spring and early summer, the main part of ?3 PUFA, 40-97% of total amount, in the littoral region was contained in biomass of producers, i.e., benthic microalgae, and in autumn it was transferred to primary consumers-benthic invertebrates, which contained ?76-93% of total ?3 PUFAs. В© 2006 Springer Science+Business Media, B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Kalachova G.S., Makhutova O.N., Ageev A.V.
Заглавие : Comparison of seasonal dynamics of the essential PUFA contents in benthic invertebrates and grayling Thymallus arcticus in the Yenisei river
Место публикации : Comparative Biochemistry and Physiology - B Biochemistry and Molecular Biology. - 2006. - Vol. 145, Is. 3-4. - С. 278-287. - ISSN 10964959 (ISSN) , DOI 10.1016/j.cbpb.2006.05.014
Ключевые слова (''Своб.индексиров.''): benthic invertebrates--grayling--polyunsaturated fatty acids--riverine food web--essential fatty acid--long chain fatty acid--polyunsaturated fatty acid--amphipoda--animal tissue--annelid worm--article--benthos--chironomidae--comparative study--controlled study--dominant inheritance--ecosystem--evolution--fatty acid analysis--female--fish--fly--invertebrate--larva--male--metabolic regulation--nonhuman--nutrient dynamics--priority journal--river--seasonal variation--statistical significance--thymallus arcticus--animals--fatty acids, unsaturated--food chain--gastrointestinal contents--invertebrates--muscles--rivers--russia--salmonidae--seasons--amphipoda--chironomidae--diptera--gammaridae--invertebrata--oligochaeta (metazoa)--thymallus arcticus--trichoptera
Аннотация: Seasonal dynamics of contents of essential polyunsaturated fatty acids (PUFA) in dominant groups of benthic invertebrates: gammarids (Gammaridae, Amphipoda), oligochaetes (Oligochaeta), chironomid larvae (Chironomidae, Diptera) and caddisfly larvae (Trichoptera), and dominant benthivorous fish, Siberian grayling Thymallus arcticus, have been studied in ecosystem of the large Siberian river. During the year of the study most benthic invertebrate taxa showed significant variations in the contents of both C-18 and long chain C-20-22 PUFAs. In contrast, the fish, which consumed the zoobenthos, had no significant seasonal variations in long chain PUFAs' contents. Thereby, the fish, as organisms of relatively higher evolution level than invertebrates, was supposed to have more strict metabolic control of long chain PUFAs' contents. Evidence was obtained that the studied fish species, grayling, may be capable to convert dietary EPA into DHA. В© 2006 Elsevier Inc. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tang K.W., Gladyshev M.I., Dubovskaya O.P., Kirillin G..., Grossart H.P.
Заглавие : Zooplankton carcasses and non-predatory mortality in freshwater and inland sea environments
Колич.характеристики :16 с
Коллективы : Humboldt Foundation; Ministry of Education and Science of Russian Federation (Siberian Federal University) [B-15]; Leibniz-Association [SAW-2011-IGB-2]; German Science foundation [KI-853/7-1, GR1540/20-1]
Место публикации : J. Plankton Res.: OXFORD UNIV PRESS, 2014. - Vol. 36, Is. 3. - С. 597-612. - ISSN 0142-7873, DOI 10.1093/plankt/fbu014. - ISSN 1464-3774
Примечания : Cited References: 168. - This work was supported by the Humboldt Foundation (Fellowship for Experienced Researchers to K. W. T.); Siberian Branch of Russian Academy of Science (Partner Project No. 8 to M. I. G. and O.P.D.); Federal Tasks of Ministry of Education and Science of Russian Federation (project B-15 of Siberian Federal University to M. I. G.); the Leibniz-Association (SAW-2011-IGB-2 to G. K.); and the German Science foundation (KI-853/7-1 to G. K., GR1540/20-1 to H. P. G.). The manuscript benefited from the constructive comments from three reviewers.
Предметные рубрики: SMALL-SCALE TURBULENCE
NON-CALANOID COPEPODS
AGGREGATES LAKE SNOW
DAPHNIA-GALEATA
MIDSUMMER DECLINE
NONCONSUMPTIVE MORTALITY
CRUSTACEAN ZOOPLANKTON
CLIMATE-CHANGE
VERTICAL-DISTRIBUTION
POPULATION-GROWTH
Ключевые слова (''Своб.индексиров.''): carbon flux--inland waters--lakes--live--dead sorting--non-predatory mortality--zooplankton carcasses
Аннотация: Zooplankton carcasses are ubiquitous in marine and freshwater systems, implicating the importance of non-predatory mortality, but both are often overlooked in ecological studies compared with predatory mortality. The development of several microscopic methods allows the distinction between live and dead zooplankton in field samples, and the reported percentages of dead zooplankton average 11.6 (minimum) to 59.8 (maximum) in marine environments, and 7.4 (minimum) to 47.6 (maximum) in fresh and inland waters. Common causes of non-predatory mortality among zooplankton include senescence, temperature change, physical and chemical stresses, parasitism and food-related factors. Carcasses resulting from non-predatory mortality may undergo decomposition leading to an increase in microbial production and a shift in microbial composition in the water column. Alternatively, sinking carcasses may contribute significantly to vertical carbon flux especially outside the phytoplankton growth seasons, and become a food source for the benthos. Global climate change is already altering freshwater ecosystems on multiple levels, and likely will have significant positive or negative effects on zooplankton non-predatory mortality. Better spatial and temporal studies of zooplankton carcasses and non-predatory mortality rates will improve our understanding of this important but under-appreciated topic.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaya, Olga P., Tang, Kam W., Gladyshev, Michail I., Kirillin, Georgiy, Buseva, Zhanna, Kasprzak, Peter, Tolomeev, Aleksandr P., Grossart, Hans-Peter
Заглавие : Estimating In Situ Zooplankton Non-Predation Mortality in an Oligo-Mesotrophic Lake from Sediment Trap Data: Caveats and Reality Check
Колич.характеристики :17 с
Коллективы : Russian Foundation for Basic Research, Belarusian Republican Foundation for Fundamental Research [14-05-90005-Bel-a, B14R-066], Humboldt Fellowship for Experienced Researchers (Germany), Russian Federal Tasks of Fundamental Research [51.1.1], German Science Foundation [GR 1540/20-1, KI-853/8-1]
Место публикации : PLoS One: PUBLIC LIBRARY SCIENCE, 2015. - Vol. 10, Is. 7. - Ст.e0131431. - ISSN 1932-6203, DOI 10.1371/journal.pone.0131431
Примечания : Cited References:60. - This work was supported by joint projects of Russian Foundation for Basic Research and Belarusian Republican Foundation for Fundamental Research (No 14-05-90005-Bel-a to O.P.D and A.P.T., and No B14R-066 to Zh.B.). K.W.T. was supported by a Humboldt Fellowship for Experienced Researchers (Germany), M.I.G. was supported by Russian Federal Tasks of Fundamental Research (project No. 51.1.1), H.P.G. and G.K. were supported by grants from the German Science Foundation (GR 1540/20-1 and KI-853/8-1).
Предметные рубрики: FRESH-WATER
NONCONSUMPTIVE MORTALITY
NONPREDATORY MORTALITY
Аннотация: Background Mortality is a main driver in zooplankton population biology but it is poorly constrained in models that describe zooplankton population dynamics, food web interactions and nutrient dynamics. Mortality due to non-predation factors is often ignored even though anecdotal evidence of non-predation mass mortality of zooplankton has been reported repeatedly. One way to estimate non-predation mortality rate is to measure the removal rate of carcasses, for which sinking is the primary removal mechanism especially in quiescent shallow water bodies. Objectives and Results We used sediment traps to quantify in situ carcass sinking velocity and non-predation mortality rate on eight consecutive days in 2013 for the cladoceran Bosmina longirostris in the oligo-mesotrophic Lake Stechlin; the outcomes were compared against estimates derived from in vitro carcass sinking velocity measurements and an empirical model correcting in vitro sinking velocity for turbulence resuspension and microbial decomposition of carcasses. Our results show that the latter two approaches produced unrealistically high mortality rates of 0.58-1.04 d(-1), whereas the sediment trap approach, when used properly, yielded a mortality rate estimate of 0.015 d(-1), which is more consistent with concurrent population abundance data and comparable to physiological death rate from the literature. Ecological implications Zooplankton carcasses may be exposed to water column microbes for days before entering the benthos; therefore, non-predation mortality affects not only zooplankton population dynamics but also microbial and benthic food webs. This would be particularly important for carbon and nitrogen cycles in systems where recurring mid-summer decline of zooplankton population due to non-predation mortality is observed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaya, Olga P., Tolomeev, Aleksandr P., Kirillin, Georgiy, Buseva, Zhanna, Tang, Kam W., Gladyshev, Michail I.
Заглавие : Effects of water column processes on the use of sediment traps to measure zooplankton non-predatory mortality: a mathematical and empirical assessment
Колич.характеристики :16 с
Коллективы : German Research Foundation (DFG) [GR-1540/29-1]; Russian Foundation for Basic Research (RFBR) [16-54-12048]; Russian Federal Tasks of Fundamental Research [51.1.1]; RF President Council on Grants for leading RF scientific schools [9249.2016.5]
Место публикации : J. Plankton Res.: OXFORD UNIV PRESS, 2018. - Vol. 40, Is. 1. - С. 91-106. - ISSN 0142-7873, DOI 10.1093/plankt/fbx066. - ISSN 1464-3774(eISSN)
Примечания : Cited References:49. - This work was a part of the joint German-Russian Project "Mortality of Zooplankton in lake ecosystems and its potential contribution to carbon mineralization in pelagic zone" supported by the German Research Foundation (DFG no. GR-1540/29-1) and the Russian Foundation for Basic Research (RFBR no. 16-54-12048). The work also was partly supported by Russian Federal Tasks of Fundamental Research (project no. 51.1.1) and by grant (no. 9249.2016.5) from the RF President Council on Grants for leading RF scientific schools.
Предметные рубрики: NONCONSUMPTIVE MORTALITY
CRUSTACEAN ZOOPLANKTON
VERTICAL-DISTRIBUTION
Ключевые слова (''Своб.индексиров.''): zooplankton--arctodiaptomus salinus--non-predatory mortality--sediment--trap--carcasses--stratified lake
Аннотация: Zooplankton populations can at times suffer mass mortality due to non-predatory mortality (NPM) factors, and the resulting carcasses can be captured by sediment traps to estimate NPM rate. This approach assumes sinking to be the primary process in removing carcasses, but in reality, carcasses can also be removed by ingestion, turbulent mixing and microbial degradation in the water column. We present mathematical formulations to calculate NPM from sediment trap data by accounting for carcass removal by processes in addition to sinking, and demonstrate their application in a study in Lake Shira, Russia. Carcass abundance of the major calanoid copepod Arctodiaptomus salinus decreased with depth, indicating the effect of carcass removal from the water column. The estimated NPM values (0.0003-0.103 d(-1)) were comparable with previously reported physiological death rates. We further used independent data to partition carcass removal due to detritivory, turbulent mixing and microbial degradation. Estimated ingestion by the amphipod Gammarus lacustris could account for the disappearance of copepod carcasses above the traps. Wind-driven turbulence could also extend the carcass exposure time to microbial degradation. Collectively, these water column processes would facilitate the remineralization of carcasses in the water column, and diminish the carcass carbon flux to the benthos.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M. I.
Заглавие : Oil Spills in Fresh Waters and State of Ecosystem of Lake Pyasino before the Incidental Spill of 2020
Колич.характеристики :10 с
Коллективы : Siberian Branch of the Russian Academy of SciencesRussian Academy of Sciences [223-EP2020/07]; Basic Research of the Russian Federation [51.1.1]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 4. - С. 313-322. - ISSN 1995-4255, DOI 10.1134/S1995425521040041. - ISSN 1995-4263(eISSN)
Примечания : Cited References:50. - This work was supported by Federal Tasks no. 223-EP2020/07 with the Siberian Branch of the Russian Academy of Sciences and by State Assignment as a part of Basic Research of the Russian Federation, topic no. 51.1.1.
Предметные рубрики: POLYUNSATURATED FATTY-ACIDS
PECHORA BASIN
RIVER
ZOOPLANKTON
Аннотация: This article presents the history of large oil spills in freshwaters, considering the processes of physicochemical and biological degradation of oil. It discusses the toxicity of oil for hydrobionts and effects of oil pollution on communities of plankton, benthos, and ichthyofauna, as well as challenges in mitigating the environmental impact of oil spills. The discussion is concerned with the state of the ecosystem in Lake Pyasino before the incidental spill of 2020, specifically, hydrochemical indicators; species composition; and abundance and biomass of plankton, benthos, and fish. Candidate technologies for restoring the Lake Pyasino ecosystem are reviewed, including "bottom-up" biomanipulation.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chertoprud M. V., Krylenko S. V., Lukinych A. I., Glazov P. M., Dubovskaya O. P., Chertoprud E. S.
Заглавие : Specific Features of the Macrozoobenthic Communities of Small Arctic Lakes in Eurasia
Колич.характеристики :14 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-04-00145]; Meeresenten project (Bundesamt fur Naturschutz, BfN) [100308472]; Federal Agency for Nature Protection of Germany (Conservation Bundesamtfur Naturschutz, BfN), grant MEERESENTEN [3516821500]; Norwegian Institute for Nature Research (NINA); Research Council of NorwayResearch Council of Norway [227024, 246726]; Basic Research Program of the Russian Federation [51.1.1]; Ministry of Science and Higher Education of the Russian Federation to the Siberian Federal University [FSRZ-2020-0006]; [AAAA-A19119021990093-8]
Место публикации : Inland Water Biol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 4. - С. 401-414. - ISSN 1995-0829, DOI 10.1134/S1995082921030056. - ISSN 1995-0837(eISSN)
Примечания : Cited References:58. - The primary processing of the material and statistical analysis of the data were carried out with financial support from the Russian Foundation for Basic Research (project No. 20-04-00145). Field works on Kolguev Island were sup-ported by the Meeresenten project (Bundesamt fur Naturschutz, BfN; online ID 100308472), the Federal Agency for Nature Protection of Germany (Conservation Bundesamtfur Naturschutz, BfN), grant MEERESENTEN (3516821500), and State assignment.AAAA-A19119021990093-8; works on Svalbard were funded by the Norwegian Institute for Nature Research (NINA) and Research Council of Norway, projects no. 227024 and 246726. Research on the Putorana Plateau was supported by a state task as part of the Basic Research Program of the Russian Federation, topic no. 51.1.1, and the State Assignment of the Ministry of Science and Higher Education of the Russian Federation to the Siberian Federal University, project no. FSRZ-2020-0006.
Предметные рубрики: WATER BODIES
ECOSYSTEMS
ZOOBENTHOS
RECOVERY
SVALBARD
IMPACT
PONDS
Аннотация: The taxonomic structure, typology, species richness, and total abundance of bentic and littoral macroinvertebrate communities from small lakes of the Arctic and Subarctic zones are considered on the basis of original data from three northern Palearctic regions (the foot of the Putorana Plateau, Kolguev Island, and Western Svalbard Island). A comparative analysis of the communities of these regions has been carried out. The features of High Arctic insular, Low Arctic, subarctic, and boreal lake communities are discussed using a large volume of literature data. The complex pattern of changes in the total benthos biomass of small lakes has been revealed: it decreases in the subarctic taiga, increases in the hypoarctic tundra, and decreases again in the High Arctic.
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