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Evidence for two abrupt warming events of SST in the last century [Text] / C. A. Varotsos [et al.] // Theor. Appl. Climatol. - 2014. - Vol. 116, Is. 1-2. - P51-60, DOI 10.1007/s00704-013-0935-8. - Cited References: 60 . - ISSN 0177-798X. - ISSN 1434-4483

РУБ Meteorology & Atmospheric Sciences
Рубрики:
SCALING BEHAVIOR
   OZONE DEPLETION
   PERMAFROST THAW
   CLIMATE SYSTEM
   AIR-POLLUTION
   LONG-MEMORY
   TEMPERATURE
   OSCILLATION
   VARIABILITY
   DYNAMICS
Аннотация: We have recently suggested that the warming in the sea surface temperature (SST) since 1900, did not occur smoothly and slowly, but with two rapid shifts in 1925/1926 and 1987/1988, which are more obvious over the tropics and the northern midlatitudes. Apart from these shifts, most of the remaining SST variability can be explained by the El Nio Southern Oscillation and the Pacific Decadal Oscillation (PDO). Here, we provide evidence that the timing of these two SST shifts (around 60 years) corresponds well to the quasi-periodicity of many natural cycles, like that of the PDO, the global and Northern Hemisphere annual mean temperature, the Atlantic Multi-decadal Oscillation, the Inter-Tropical Convergence Zone, the Southwest US Drought data, the length of day, the air surface temperature, the Atlantic meridional overturning circulation and the change in the location of the centre of mass of the solar system. In addition, we show that there exists a strong seasonal link between SST and ENSO over the tropics and the NH midlatitudes, which becomes stronger in autumn of the Northern Hemisphere. Finally, we found that before and after each SST shift, the intrinsic properties of the SST time series obey stochastic dynamics, which is unaffected by the modulation of these two shifts. In particular, the SST fluctuations for the time period between the two SST shifts exhibit 1/f-type long-range correlations, which are frequently encountered in a large variety of natural systems. Our results have potential implications for future climate shifts and crossing tipping points due to an interaction of intrinsic climate cycles and anthropogenic greenhouse gas emissions.

WOS,
Scopus
Держатели документа:
[Varotsos, Costas A.
Efstathiou, Maria N.] Univ Athens, Climate Res Grp, Div Environm Phys & Meteorol, Fac Phys, Athens 15784, Greece
[Franzke, Christian L. E.] British Antarctic Survey, Nat Environm Res Council, Cambridge CB3 0ET, England
[Degermendzhi, Andrei G.] Russian Acad Sci, Inst Biophys, SB RAS, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Varotsos, C.A.; Franzke, CLE; Efstathiou, M.N.; Degermendzhi, A.G.

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Comparison of fatty acid composition of cladocerans and copepods from lakes of different climatic zones [Text] / O. N. Makhutova [et al.] // Contemp. Probl. Ecol. - 2014. - Vol. 7, Is. 4. - P474-483, DOI 10.1134/S1995425514040076. - 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. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
FRESH-WATER ZOOPLANKTON
   DOCOSAHEXAENOIC ACID
   SEASONAL DYNAMICS
   TROPHIC TRANSFER
   YENISEI RIVER
   LIVE FOOD
   GROWTH
   TEMPERATURE
   SESTON
   RESERVOIR
Кл.слова (ненормированные):
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.

WOS
Держатели документа:
[Makhutova, O. N.
Gladyshev, M. I.
Sushchik, N. N.
Dubovskaya, O. P.
Kalachova, G. S.] Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
[Gladyshev, M. I.
Sushchik, N. N.
Dubovskaya, O. P.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Buseva, Z. F.
Semenchenko, V. P.] Natl Acad Sci Belarus Bioresources, Sci & Pract Ctr, Minsk 220072, Byelarus
[Fefilova, E. B.
Kononova, O. N.
Baturina, M. A.] Russian Acad Sci, Komi Sci Ctr, Ural Branch, Inst Biol, Syktyvkar 167982, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
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.; 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]

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Microbial sulfate reduction in a brackish meromictic steppe lake [Text] / D. B. Kosolapov [et al.] // Aquat. Ecol. - 2003. - Vol. 37, Is. 3. - P. 215-226, DOI 10.1023/A:1025871300917. - Cited References: 43 . - ISSN 1386-2588

РУБ Ecology + Limnology + Marine & Freshwater Biology
Рубрики:
REDUCING BACTERIA
   SULFUR-COMPOUNDS
   LITTORAL SEDIMENT
   INORGANIC SULFUR
   EUTROPHIC LAKE
   SALT-LAKE
   RATES
   MARINE
   CYCLE
   TEMPERATURE
Кл.слова (ненормированные):
anoxic waters -- brackish meromictic lake -- littoral and profundal sediments -- sulfate reduction
Аннотация: Patterns of sulfate reduction were studied in water and sediments of Lake Shira, South Siberia, Russia. The lake was characterized by a high level of sulfate (91-116 mM). The concentration of hydrogen sulfide in the anoxic waters of the lake reached 0.6 mM. In summer the sulfate reduction rate in the water column, measured by radiometric technique, varied from 0.25 to 9.81 mumol sulfate l(-1) d(-1). There were two peaks of sulfate reduction activity: just below the chemocline and near the sediment surface. Sulfate reduction rate in the profundal silts ranged from 4.1 to 90.6 mumol l(-1) d(-1). The zone of the most active sulfate reduction was restricted to the surface sediment layers. The acceleration of sulfate reduction rate (up to 236 mumol l(-1) d(-1)) and the increase of density of viable sulfate reducers (up to 2x10(5) cells ml(-1)) were recorded in the littoral sediments adjacent to the mouth of the Son River and sewage discharge. It was apparently caused by the input of allochthonous organic substrates and also by a high environmental temperature. On an areal basis, sulfate reduction rate in the water was approximately 8 times higher than that in the profundal sediments. Sulfate reduction was the most important process of anaerobic oxidation of organic carbon in Lake Shira. In summer in the profundal zone of the lake, sulfate reducers were able to mineralize about 67% of the daily integrated primary production of phototrophic and chemotrophic organisms.

WOS
Держатели документа:
Russian Acad Sci, Inst Biol Inland Waters, Yaroslavl 152742, Russia
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kosolapov, D.B.; Rogozin, D.Y.; Gladchenko, I.A.; Kopylov, A.I.; Zakharova, E.E.

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Fatty Acid Content and Composition of the Yakutian Horses and Their Main Food Source: Living in Extreme Winter Conditions / K. A. Petrov, L. V. Dudareva, V. V. Nokhsorov [et al.] // Biomolecules. - 2020. - Vol. 10, Is. 2. - Ст. 315, DOI 10.3390/biom10020315. - Cited References:62. - This research was funded by the State Assignment within the framework of the fundamental research program of the Russian Federation, topic No. 51.1.1; the Government Assignment given by the Ministry of Science and Higher Education of the Russian Federation to Siberian Federal University in 2020 (Project "Biologically active substances in trophic chains of aquatic ecosystems as essential components of human diet and markers for fisheries resource conservation"; the state task of the Ministry of Education and Science of Russia (FSRG-2020-0019). . - ISSN 2218-273X

РУБ Biochemistry & Molecular Biology
Рубрики:
MEMBRANE-LIPIDS
   MEAT QUALITY
   TEMPERATURE
   CARCASS
   GROWTH
Кл.слова (ненормированные):
essential polyunsaturated fatty acids -- linoleic acid -- alpha-linolenic -- acid -- food quality -- muscle tissue -- subcutaneous adipose tissue -- liver -- green cryo-fodder
Аннотация: For the first time, seasonal changes in the content of total lipids (TLs) and phospholipids (PLs) were studied in fodder plants growing in Central Yakutia-a perennial cereal, smooth brome (Bromopsis inermis L.), and an annual cereal, common oat (Avena sativa L.). Both species have concentrated TLs and PLs in autumn under cold hardening. In addition, a significant increase in the content of fatty acids (FAs) of B. inermis was observed during the autumn decrease in temperature. The Yakutian horses, which fed on cereals enriched with nutrients preserved by natural cold (green cryo-fodder), accumulated significant amounts of 18:2n-6 and 18:3n-3, the total content of which in cereals was 75% of the total FA content. We found differences in the distribution of these two FAs in different tissues of the horses. Thus, liver was rich in 18:2n-6, while muscle and adipose tissues accumulated mainly 18:3n-3. Such a distribution may indicate different roles of these FAs in the metabolism of the horses. According to FA content, meat of the Yakutian horses is a valuable dietary product.

WOS
Держатели документа:
Russian Acad Sci, Inst Biol Problems Cryolithozone, Siberian Branch, 41 Lenina Av, Yakutsk 677000, Russia.
Russian Acad Sci, Siberian Inst Plant Physiol & Biochem, Siberian Branch, 132 Lermontova Str, Irkutsk 664033, Russia.
North Eastern Fed Univ, 48 Kulakovskogo Str, Yakutsk 677000, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Biophys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Petrov, Klim A.; Dudareva, Lyubov, V; Nokhsorov, Vasiliy V.; Stoyanov, Kirill N.; Makhutova, Olesia N.; Stoyanov, Kirill; Russian FederationRussian Federation [51.1.1]; Ministry of Science and Higher Education of the Russian Federation; Ministry of Education and Science of RussiaMinistry of Education and Science, Russian Federation [FSRG-2020-0019]

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Long-Chain Alkenones in Saline Meromictic Lakes of the North Minusinsk Depression (Southern Siberia): First Knowledge and Possible Correlation with Water-Level Dynamics / D. Y. Rogozin, A. O. Bulkhin, V. V. Zykov [et al.] // Contemp. Probl. Ecol. - 2020. - Vol. 13, Is. 6. - P643-655, DOI 10.1134/S199542552006013X. - Cited References:37. - This work was supported by the Russian Foundation for Basic Research (project no. 19-05-00428) and was jointly funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Krai and Krasnoyarsk Krai Foundation of Science under the scientific project "Bottom Sediments of Lake Uchum (Krasnoyarsk Krai) as a Source of Information for the Paleoclimate and Prediction of Healing Properties of a Water Body," project no. 18-45-243002 r_mol_a. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
TEMPERATURE
   SHIRA
   PALEOTEMPERATURE
   CALIBRATION
   SEDIMENTS
   ATLANTIC
Кл.слова (ненормированные):
long-chain alkenones -- haptophyte algae -- meromictic lakes -- water level -- climate -- paleolimnological reconstruction -- 18S rRNA gene -- metagenomics
Аннотация: Long-chain alkenones (LCAs)-lipides produced by some microalgae of the Haptophyta group in seas and continental water bodies-are promising paleomarkers of climate changes because they are well-preserved in bottom sediments. The hydrocarbon chain and the degree of unsaturation of double bonds of this class of lipides can vary depending on habitat conditions of their producers. For the first time, we have discovered LCAs in the bottom sediments of two saline meromictic lakes Shira and Uchum located in arid steppes of southern Siberia (the North Minusinsk Depression) and estimated the distribution of their total content, length, and the degree of unsaturation. The highly abundant population of producers of LCAs-haptophyte algae of the genus Isochrysis (Haptophyta)-is revealed in the water column of Lake Uchum. It is shown that the species composition of the haptophyte algae and composition of the LCAs in the lakes under study are similar to those in saline stratified lakes of North America (Saskatchewan, Canada) with a similar climate and salt composition. The abundance of the C37:4 alkenone in the bottom sediments in the last 100 years reflected the variations in lake salinity caused by the documented changes in the water level. In this way, it is shown that the LCAs may be used as a paleomarker of climate-driven changes in the water level of the saline lakes in southern Siberia.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Sobolev Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia.
Russian Acad Sci, Inst Chem Biol & Fundamental Med, Siberian Branch, Novosibirsk 630090, Russia.

Доп.точки доступа:
Rogozin, D. Y.; Bulkhin, A. O.; Zykov, V. V.; Ivanova, E. A.; Darin, A., V; Kalugin, I. A.; Baturina, O. A.; Kabilov, M. R.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-05-00428, 18-45-243002 r_mol_a]; Government of Krasnoyarsk Krai [18-45-243002 r_mol_a]; Krasnoyarsk Krai Foundation of Science [18-45-243002 r_mol_a]

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Transfer efficiency of carbon, nutrients, and polyunsaturated fatty acids in planktonic food webs under different environmental conditions / M. Karpowicz, I. Feniova, M. I. Gladyshev [et al.] // Ecol. Evol. - 2021, DOI 10.1002/ece3.7651. - Cited References:62. - This research was supported by the Polish National Science Centre (2016/21/B/NZ8/00434). The research was also supported by Federal Tasks for Institute of Biophysics SB RAS No. 51.1.1 and Federal Tasks for Siberian Federal University No. FSRG-2020-0019. The authors are thankful to Joanna Kozowska for her help in the collection of samples. . - Article in press. - ISSN 2045-7758

РУБ Ecology + Evolutionary Biology
Рубрики:
PHOSPHORUS STOICHIOMETRY
   LIGHT-INTENSITY
   ZOOPLANKTON
   TEMPERATURE
Кл.слова (ненормированные):
biogeochemical cycle -- dystrophication -- essential substances -- eutrophication -- food quality -- phytoplankton -- zooplankton
Аннотация: The trophic transfer efficiency (TTE) is an important indicator of ecosystem functioning. However, TTE data from freshwater food webs are ambiguous due to differences in time scales and methods. We investigated the transfer of essential substances (carbon, nutrients, and polyunsaturated fatty acids) through plankton communities in 30 Polish lakes with different trophic status in the middle of summer. The results of our study revealed that different essential substances were transferred from phytoplankton to zooplankton with varying efficiencies. The average TTE of C, N, P, and the sum of omega-3 PUFA were 6.55%, 9.82%, 15.82%, and 20.90%, respectively. Our results also show a large mismatch between the elemental and biochemical compositions of zooplankton and their food during the peak of the summer stagnation, which may further promote the accumulation of essential substances. There were also large differences in TTEs between trophic conditions, with the highest efficiencies in oligotrophic lakes and the lowest in dystrophic and eutrophic lakes. Therefore, our study indicates that disturbances like eutrophication and dystrophication similarly decrease the TTE of essential substances between phytoplankton and zooplankton in freshwater food webs.

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Держатели документа:
Univ Bialystok, Dept Hydrobiol, Fac Biol, Ciolkowskiego 1J, PL-15245 Bialystok, Poland.
Russian Acad Sci, Inst Ecol & Evolut, Moscow, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Siberian Branch, Inst Biophys,Fed Res Ctr, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Polish Acad Sci, Nencki Inst Expt Biol, Res Stn Mikolajki, Warsaw, Poland.
Oklahoma State Univ, Dept Integrat Biol, Stillwater, OK 74078 USA.

Доп.точки доступа:
Karpowicz, Maciej; Feniova, Irina; Gladyshev, Michail I.; Ejsmont-Karabin, Jolanta; Gorniak, Andrzej; Sushchik, Nadezhda N.; Anishchenko, Olesya V.; Dzialowski, Andrew R.; Polish National Science Centre [2016/21/B/NZ8/00434]; Federal Tasks for Institute of Biophysics SB RAS [51.1.1]; Federal Tasks for Siberian Federal University [FSRG-2020-0019]

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