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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Varotsos C.A., Franzke CLE, Efstathiou M.N., Degermendzhi A.G.
Заглавие : Evidence for two abrupt warming events of SST in the last century
Колич.характеристики :10 с
Место публикации : Theor. Appl. Climatol.: SPRINGER WIEN, 2014. - Vol. 116, Is. 1-2. - С. 51-60. - ISSN 0177-798X, DOI 10.1007/s00704-013-0935-8. - ISSN 1434-4483
Примечания : Cited References: 60
Предметные 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.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Trusova M.Y., Gladyshev M.I.
Заглавие : Phylogenetic diversity of winter bacterioplankton of eutrophic Siberian reservoirs as revealed by 16S rRNA gene sequences
Колич.характеристики :8 с
Место публикации : Microb. Ecol.: SPRINGER-VERLAG, 2002. - Vol. 44, Is. 3. - P252-259. - ISSN 0095-3628, DOI 10.1007/s00248-002-2020-1
Примечания : Cited References: 34
Предметные рубрики: RIBOSOMAL-RNA ANALYSIS
COMMUNITY COMPOSITION
BACTERIAL DIVERSITY
LAKE
IDENTIFICATION
BIODIVERSITY
CULTIVATION
TAXONOMY
DYNAMICS
RIVER
Аннотация: Using 16S rRNA gene sequence analyses we investigated the bacterial diversity of winter bacterioplankton of two eutrophic Siberian reservoirs. These reservoirs show similarity in phytoplankton community composition in spring and autumn but tend to differ in summer in exhibiting cyanobacterial bloom. Forty-eight unique partial 16S RNA gene sequences retrieved from two libraries were mostly affiliated with the class Actinobacteria, beta subdivision of the class Proteobacteria, and the phylum Cytophaga-Flavobacterium-Bacteroides The clone library of the pond exhibiting summer cyanobacterial bloom showed more diversity in sequence composition. A significant number of bacterial 16S rRNA gene clones were closely related to freshwater bacteria previously found in different aquatic ecosystems. This finding confirms the assumption that some bacterial clades are globally distributed.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Somova L.A., Pechurkin N.S., Pisman T.I.
Заглавие : Increase of atmospheric CO2: Response patterns of a simple terrestrial man-made ecosystem
Колич.характеристики :5 с
Место публикации : SPACE LIFE SCIENCES: CLOSED ARTIFICIAL ECOSYSTEMS AND LIFE SUPPORT SYSTEMS. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 31: Meeting of F4 1 Session of the 34th Scientific Assembly of COSPAR (OCT, 2002, HOUSTON, TEXAS), Is. 7. - P1731-1735. - ISBN 0273-1177, DOI 10.1016/S0273-1177(03)00110-8
Примечания : Cited References: 22
Предметные рубрики: ELEVATED CARBON-DIOXIDE
MATHEMATICAL-MODEL
MICROORGANISMS
NITROGEN
LIMITATION
ENRICHMENT
DYNAMICS
SYSTEM
Аннотация: Simple models of terrestrial ecosystems with a limited number of components are an efficient tool to study the main laws of functioning of populations, including microbial ones, and their communities, as components of natural ecosystems, under variable environmental conditions. Among other factors are the increase of carbon dioxide in the atmosphere and limitation of plants' growth by biogenic elements. The main types of ecosystems' responses to changes in environmental conditions (a change in CO2 concentration) have been demonstrated in a "plants - rhizospheric microorganisms - artificial soil" simple experimental system. The mathematical model of interactions between plants and microorganisms under normal and elevated atmospheric CO2 and limitation by nutrients (nitrogen and phosphorus) yielded a qualitative agreement between calculated and experimental values of limiting substances concentrations and release rates of exudates. (C) 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrova E.V., Kudryasheva N.S., Visser AJWG, van Hoek A...
Заглавие : Characteristics of enclogenous flavin fluorescence of Photobacterium leiognathi luciferase and Vibrio fischeri NAD(P)H : FMN-oxidoreductase
Колич.характеристики :5 с
Место публикации : Luminescence: JOHN WILEY & SONS LTD, 2005. - Vol. 20: 11th International Symposium on Luminescence Spectrometry - Detection Techniques in Biomedical and Environmental Analysis (MAY 05-08, 2004, Beijing, JAPAN), Is. 3. - P205-209. - ISSN 1522-7235, DOI 10.1002/bio.815
Примечания : Cited References: 22
Предметные рубрики: FLAVODOXIN
ANISOTROPY
REDUCTASE
DYNAMICS
SYSTEM
Ключевые слова (''Своб.индексиров.''): bacterial bioluminescence--flavin fluorescence
Аннотация: The bioluminescent bacterial enzyme system NAD(P)H:FMN-oxidoreductase-luciferase has been used as a test system for ecological monitoring. One of the modes to quench bioluminescence is the interaction of xenobiotics with the enzymes, which inhibit their activity. The use of endogenous flavin fluorescence for investigation of the interactions of non-fluorescent compounds with the bacterial luciferase from Photobacterium leiognathi and NAD(P)H:FMN-oxidoreductase from Vibrio fischeri has been proposed. Fluorescence spectroscopy methods have been used to study characteristics of endogenous flavin fluorescence (fluorophore lifetime, the rotational correlation time). The fluorescence anisotropy behaviour of FMN has been analysed and compared to that of the enzyme-bound flavin. The fluorescence characteristics of endogenous flavin of luciferase and NAD(P)H:FMN-oxidoreductase have been shown to be applicable in studying enzymes' interactions with non-fluorescent compounds. Copyright (c) 2005 John Wiley & Sons, Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bartsev, Sergey I., Pochekutov, Aleksei A.
Заглавие : A continual model of soil organic matter transformations based on a scale of transformation rate
Колич.характеристики :4 с
Коллективы : Basic Research Program of the Presidium of RAS Project [12], Integration Project of SB RAS [21]
Место публикации : Ecol. Model.: ELSEVIER SCIENCE BV, 2015. - Vol. 302. - С. 25-28. - ISSN 0304-3800, DOI 10.1016/j.ecolmodel.2015.01.030. - ISSN 1872-7026(eISSN)
Примечания : Cited References:18. - This work is supported by Basic Research Program of the Presidium of RAS Project No. 12 and Integration Project of SB RAS No. 21.
Предметные рубрики: CARBON
DECOMPOSITION
DYNAMICS
NITROGEN
DECAY
Ключевые слова (''Своб.индексиров.''): soil organic matter--continual model of soil--soil formation
Аннотация: The study proposes a model of transformation and decomposition of soil organic matter, based on using the rate of matter transformation as a continual scale of its transformation degree. The model is represented by one partial derivative differential equation that has an analytical solution. This model has only two adjustable parameters, while the number of experimentally determined parameters depends on how detailed the description of the plant litter is supposed to be. The model has been tested, and model parameters have been evaluated by comparing model predictions with the literature data on the stock of soil organic matter in different types of ecosystems. (C) 2015 Elsevier B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Artamonova V. S., Makhrov A. A., Gladyshev M. I., Sushchik N. N., Dgebuadze Y. Y.
Заглавие : Polyunsaturated Fatty Acid Content in Muscle Tissue Is Associated with the Duration of Embryo Development in Salmonoid Fishes (Salmonoidei)
Колич.характеристики :3 с
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [16-14-10001]
Место публикации : Dokl. Biochem. Biophys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2020. - Vol. 491, Is. 1. - С. 59-61. - ISSN 1607-6729, DOI 10.1134/S1607672920020039. - ISSN 1608-3091(eISSN)
Примечания : Cited References:14. - The study was supported by the Russian Science Foundation (project no. 16-14-10001).
Предметные рубрики: DYNAMICS
FOOD
Аннотация: A hypothesis was advanced and grounded that the total content of eicosapentaenoic (EPA, 20:5n-3) and docosahexaenoic (DHA, 22:6n-3) acids in fish muscle tissue is associated with the species-specific (taxon-specific) duration of embryo development. A meta-analysis of the original and published data was performed using fishes of the families Coregonidae and Salmonidae as an example. Fishes with longer embryo development times, which are observed at lower temperatures, were found to have significantly higher EPA + DHA contents in muscles as compared with the species that belong to the same families but have shorter embryo development times. This association was explained by the fact that an embryo forms more cells per unit tissue volume at lower temperatures, which requires a greater specific amount of cell membranes and, therefore, greater amounts of EPA and DHA to produce them.
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