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Ecology of purple sulfur bacteria in the highly stratified meromictic Lake Shunet (Siberia, Khakassia) in 2002-2009 / D. Y. Rogozin, V. V. Zykov, A. G. Degermendzhi // Microbiology (Russian Federation). - 2012. - Vol. 81, Is. 6. - P727-735, DOI 10.1134/S0026261712060148 . - ISSN 0026-2617
Кл.слова (ненормированные):
bacteriochlorophyll a -- chemocline -- meromictic lake -- purple sulfur bacteria -- seasonal dynamics -- Bacteria (microorganisms) -- Chromatiaceae
Аннотация: Phototrophic sulfur bacteria form dense accumulations in the chemocline zones of stratified lakes where light reaches the sulfide-containing layers of water. Many works are dedicated to the ecophysiology of these microorganisms in meromictic lakes. However, the role of these microorganisms in the trophic network of these ecosystems, the ways of biomass utilization, and the contribution to the turnover of biogenic elements have so far been insufficiently understood. This work deals with the analysis of many years' seasonal dynamics of the biomass of purple sulfur bacteria and the physicochemical conditions of their environment in Lake Shunet (Siberia, Khakassia, Russia), unraveling the causes of their anomalous development in the chemocline of this lake, as well as the comparative analysis of such type of ecosystems. Lake Shunet is characterized by markedly pronounced stratification and the high density of purple sulfur bacteria (PSB) in the chemocline, which is comparable to that of Lake Mahoney (Canada) where the number of PSB is the greatest among those known in the world. It was shown that, in the period 2002-2009, the total amount of bacterio-chlorophyll a in the water column of Lake Shunet increased and did not correlate with the seasonal variations in temperature and illumination in the chemocline. It was established that PSB cells in the purple layer experienced the effect of self-shading. The sedimentation rate of purple sulfur bacteria in Lake Shunet was low due to the pronounced density gradient in the chemocline zone. Thus, the high number of PSB in the chemocline was due to the combination of strong illumination, a high sulfide concentration, and a high water density gradient, which was responsible for stable stratification and contributed to the accumulation of the cells in a narrow layer. The data obtained could be useful for the paleoreconstruction of climatically deter-mined changes in the level of the lake and its periods of meromixis by the presence of carotenoids and bacte-riochlorophylls in the bottom sediments. В© 2012 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rogozin, D.Y.; Zykov, V.V.; Degermendzhi, A.G.

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Carotenoids of phototrophic organisms in bottom sediments of meromictic Lake Shira (Siberia, Russia) as an indicator of past stratification / D. Y. Rogozin [et al.] // Doklady Biological Sciences. - 2011. - Vol. 439, Is. 1. - P228-231, DOI 10.1134/S0012496611040077 . - ISSN 0012-4966
Кл.слова (ненормированные):
carotenoid -- chlorophyll -- water -- animal -- article -- chemistry -- ecosystem -- lake -- metabolism -- microbiology -- photosynthesis -- phototrophy -- pigmentation -- Russian Federation -- sediment -- Animals -- Carotenoids -- Chlorophyll -- Ecosystem -- Geologic Sediments -- Lakes -- Photosynthesis -- Phototrophic Processes -- Pigmentation -- Russia -- Siberia -- Water -- Water Microbiology

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 5050, Krasnoyarsk 660036, Russian Federation
Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk 630090, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rogozin, D.Y.; Zykov, V.V.; Kalugin, I.A.; Daryin, A.V.; Degermendzhy, A.G.

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Estimation of periphytic microalgae gross primary production with DCMU-fluorescence method in Yenisei River (Siberia, Russia) / V. I. Kolmakov [et al.] // Journal of Applied Phycology. - 2008. - Vol. 20, Is. 3. - P289-297, DOI 10.1007/s10811-007-9246-8 . - ISSN 0921-8971
Кл.слова (ненормированные):
Chlorophyll fluorescence -- Gross primary production -- Periphytic microalgae
Аннотация: Periphyton (epilithon) gross primary production (GPP) was estimated using the DCMU-fluorescence method in the Yenisei River. In the unshaded littoral zone, chlorophyll a concentration (Chl a) and GPP value varied from 0.83 to 973.74 mg m-2and 2-304,425 O2 m-2 day -1 (0.64-95 133 mg C m-2 day-1), respectively. Positive significant correlation (r=0.8) between daily GPP and periphyton Chl a was found. Average ratio GPP:Chl a for periphyton was 36.36 mg C mg Chl a m -2 day-1. The obtained GPP values for the Yenisei River have a high significant correlation with values predicted by a conventional empirical model for stream periphyton. We concluded that the DCMU-fluorescence method can be successfully used for measuring of gross primary production of stream phytoperiphyton at least as another useful tool for such studies. В© 2007 Springer Science+Business Media B.V.

Scopus
Держатели документа:
Siberian Federal University, Svobodny av.79, Krasnoyarsk 660041, Russian Federation
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Krasnoyarsk State Agricultural University, Mira av., 88, Krasnoyarsk 660049, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kolmakov, V.I.; Anishchenko, O.V.; Ivanova, E.A.; Gladyshev, M.I.; Sushchik, N.N.

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Research of the meteorological factors influence on the fluorescence measurements of subsurface phytoplankton in blooming reservoir / O. V. Anishchenko, V. I. Komakov, M. I. Gladyshev // Doklady Akademii Nauk. - 2004. - Vol. 397, Is. 1. - С. 124-127 . - ISSN 0869-5652
Кл.слова (ненормированные):
Bacteria -- Fluorescence -- Meteorological problems -- Precipitation (meteorology) -- Reservoirs (water) -- Solar radiation -- Wind effects -- Meteorological effects -- Algae
Аннотация: The reaction of algae and cyano-bacteria photosynthetic apparatus on atmospheric sediments, incident solar radiation and wind velocity was estimated by measuring chlorophyll fluorescence using three-beam fluorescent diagnostics. As shown, wind in the spring positively affects the chlorophyll concentration but causes negative effect on phytoplankton photosynthetic activity in other seasons. Under conditions of high-intensity solar irradiation confervoid and colonial cyanobacteria, possessing gas vacuoles, have an advantage over plankton eukaryotic algae. Other response differences weren't observed.

Scopus
Держатели документа:
Inst. Biofiziki SO RAN, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Anishchenko, O.V.; Komakov, V.I.; Gladyshev, M.I.

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A circadian rhythm of grazing of microalgae by a laboratory cultureof Ceriodaphnia quadrangula / V. I. Kolmakov [et al.] // Biofizika. - 2002. - Vol. 47, Is. 4. - P676 . - ISSN 0006-3029
Кл.слова (ненормированные):
Daily rhythm of grazing -- Flowing-through cultivator -- Fluorescence -- Microalgae -- Photoperiod -- Statistical spectral analysis -- algae -- Animalia -- Ceriodaphnia quadrangula -- Chlorella vulgaris -- Chlorophyta
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.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Slate University, pr. Svobodnyi 79, Krasnoyarsk, 660042, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kolmakov, V.I.; Levin, L.A.; Dubovskaya, O.P.; Gladyshev, M.I.

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Circadian rhythms of feeding with microalgae of Ceriodaphnia quadrangula in laboratory culture / V. I. Kolmakov [и др.] // Biofizika. - 2002. - Vol. 47, Is. 4. - С. 673-676 . - ISSN 0006-3029
Кл.слова (ненормированные):
chlorophyll -- alga -- animal -- article -- chemistry -- circadian rhythm -- Crustacea -- fluorometry -- growth, development and aging -- photoperiodicity -- physiology -- Algae -- Animals -- Chlorophyll -- Circadian Rhythm -- Crustacea -- Fluorometry -- Photoperiod
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.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kolmakov, V.I.; Levin, L.A.; Dubovskaia, O.P.; Gladyshev, M.I.

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Growth and survival of cyanobacteria in water from blooming and nonblooming ponds under experimental conditions. / M. I. Gladyshev [et al.] // Doklady Biological Sciences. - 2000. - Vol. 375. - P607-609 . - ISSN 0012-4966
Кл.слова (ненормированные):
chlorophyll -- fresh water -- phosphorus -- Anabaena -- Arctic -- article -- biomass -- comparative study -- Cyanobacterium -- growth, development and aging -- microbiology -- pH -- plant -- Russian Federation -- season -- Anabaena -- Arctic Regions -- Biomass -- Chlorophyll -- Cyanobacteria -- Fresh Water -- Hydrogen-Ion Concentration -- Phosphorus -- Plants -- Russia -- Seasons

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Kolmakov, V.I.; Kravchuk, E.S.; Ivanova, E.A.; Trusova, M.Y.; Gribovskaya, I.V.; Zhilenkov, M.D.

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Gut content analysis of Gammarus lacustris from a Siberian lake using biochemical and biophysical methods / M. I. Gladyshev [et al.] // Hydrobiologia. - 2000. - Vol. 431, Is. 2-3. - P155-163 . - ISSN 0018-8158
Кл.слова (ненормированные):
Chlorophyll fluorescence -- Fatty acid composition -- Viable gut passage -- crustacean -- diet -- saline lake -- seston -- stomach content -- Russian Federation
Аннотация: We studied the gut contents of Gammarus lacustris from the littoral of Shira lake, a Siberian salt lake, by microscopic analysis in conjunction with measuring of fluorescence of chlorophyll and composition of fatty acids. Gammarus ingested primarily fresh seston, probably settled on the bottom. Additionally, the amphipods obtained essential polyunsaturated fatty acids of ?3 family by selectively consuming bottom sediment particles. A considerable part of the ingested seston comprised cells of Botryococcus sp., which passed the intestinal tract in living form and their photosynthetic activity increased. This viable gut passage was likely one of the causes of bloom of Botryococcus in the littoral. Unlike a number of literature data, there was no selective digestion of any fatty acid species, including polyunsaturated acids, in the intestinal tract.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State University, Svobodny av., 79, Krasnoyarsk, 660042, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Emelianova, A.Y.; Kalachova, G.S.; Zotina, T.A.; Gaevsky, N.A.; Zhilenkov, M.D.

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The vertical distribution of zooplankton in brackish meromictic lake with deep-water chlorophyll maximum / Y. S. Zadereev, A. P. Tolomeyev // Hydrobiologia. - 2007. - Vol. 576, Is. 1. - P69-82, DOI 10.1007/s10750-006-0294-x . - ISSN 0018-8158
Кл.слова (ненормированные):
Anoxic hypolimnion -- Deep water chlorophyll maximum -- Meromictic lake -- Stratification -- Vertical distribution -- Zooplankton -- Algae -- Chlorophyll -- Growth kinetics -- Lakes -- Saline water -- Anoxic hypolimnion -- Deep water chlorophyll maximum -- Meromictic lake -- Stratification -- Vertical distribution -- Zooplanktons -- Biodiversity -- biomass -- brackish water -- chlorophyll -- green alga -- meromictic lake -- reproduction -- stratification -- vertical distribution -- zooplankton -- Eurasia -- Khakassia -- Lake Shira -- Russian Federation -- Arctodiaptomus salinus -- Brachionus plicatilis -- Chlorophyta -- Copepoda -- Hexarthra oxiuris -- Rotifera
Аннотация: We examined the dynamics of the vertical stratification of physical, chemical and biological factors in a brackish meromictic lake with a deep-water chlorophyll maximum (Shira Lake, Russia, Khakasia) during the growing season and estimated how the vertical distribution of these factors influences the vertical distribution of the zooplankton community. The vertical distribution of zooplankton was restricted by the anoxic hypolimnion. Nauplii and younger copepodides (C1-C3) of the copepod, Arctodiaptomus salinus, and the rotifer, Brachionus plicatilis, were found in the upper warm waters. During summer stratification the maximum of A. salinus biomass, which consisted mainly of older copepodides (C4-C5) and females, was associated with the deep-water maximum of biomass of green algae, which are the preferred diet for this species. The vertical distribution of the rotifer Hexarthra oxiuris was bimodal with numerical peaks in the epi- and hypolimnion. Reproduction peaks of dominant species were separated in time. The reproduction peak of A. salinus was at the beginning of summer when A. salinus constituted up to 99% of total zooplankton biomass. The development of rotifers was detected after the reproduction peak of A. salinus when the biomass of rotifers reached 50% of total zooplankton biomass. В© 2007 Springer Science+Business Media B.V.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zadereev, Y.S.; Tolomeyev, A.P.

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10.

Ground truth methods as a part of space mapping of inland water phytopigment dynamics / A. P. Shevyrnogov, A. F. Sid'ko // Advances in Space Research. - 1998. - Vol. 22, Is. 5. - P705-708, DOI 10.1016/S0273-1177(97)01137-X . - ISSN 0273-1177
Кл.слова (ненормированные):
chlorophyll -- optical property -- spectral reflectance -- Russian Federation
Аннотация: Spectral radiance and reflectance of the Krasnoyarsk reservoir water surface were studied from 1974 until 1989. Spectral brightness coefficient (SBC) curves have been found to record chlorophyll absorption band in the red part of the spectrum ? = 680 nm and spectral indices of 'yellow matter' absorption in the short-wave part ? = 400-500 nm. Blue-green algae SBC curves record phycocyanine absorption peak at ?max = 630 mm. The peak is inherent in this type of algae only.

Scopus
Держатели документа:
Institue of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.P.; Sid'ko, A.F.

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11.

Observed trends of chlorophyll concentration in the surface layer of the northern and central Atlantic (1979-1983) / A. P. Shevyrnogov, G. S. Vysotskaya // Advances in Space Research. - 1998. - Vol. 22, Is. 5. - P701-704, DOI 10.1016/S0273-1177(97)01136-8 . - ISSN 0273-1177
Кл.слова (ненормированные):
chlorophyll -- primary production -- remote sensing -- Atlantic Ocean
Аннотация: To preserve and utilize the biosphere it is imperative that we understand the long-term dynamics of the primary production process on our planet. Variability of chlorophyll concentration in the ocean is one of the most important components of this process. However, size and access make its investigation labour-intensive. Dependence of primary production on high variability of hydrophysical phenomena in the ocean (fluctuations of currents, frontal zones, etc.) makes it difficult to locate points to measure chlorophyll concentration dynamics. To locate such quasistationary zones with respect to seasonal dynamics of chlorophyll concentration by satellite data the Institute of Biophysics (Russian Academy of Sciences, Siberian Branch) has developed a geoinformation system. Its use made it possible to locate such zones over the entire ocean. The work shows zones on the Central and Northern Atlantic. They form the ground to analyse perennial dynamics of chlorophyll concentration. The quasistationary zones are proposed for systematic monitoring of phytopigment concentration by space-borne and marine craft.

Scopus
Держатели документа:
Institue of Biophysics, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation
Computer Center, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.P.; Vysotskaya, G.S.

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12.

Quasistationary areas of chlorophyll concentration in the world ocean as observed satellite data / A. P. Shevyrnogov, G. S. Vysotskaya, J. I. Gitelson // Advances in Space Research. - 1996. - Vol. 18, Is. 7. - P129-132, DOI 10.1016/0273-1177(95)00955-8 . - ISSN 0273-1177
Кл.слова (ненормированные):
chlorophyll concentration -- chlorophylls -- CZCS -- ocean chlorophyll concentration -- phytopigment dynamics -- productivity -- quasistationary areas -- remote sensing -- satellite data -- seasonal changes -- world ocean
Аннотация: To estimate the seasonal progress of the production process over the planet and its long-standing trend it is important to measure not only the spatial distributions of pigment that represent the rates of photosynthesis but also their time variability. Anthropogenic impact on natural complexes can be efficiently estimated by satellite observations of phytopigment dynamics. This study presents CZCS satellite data processed to reveal spatial inhomogeneity in the seasonal course of chlorophyll concentration in the world ocean on a global scale. Areas with quasistationary and non-stationary seasonal changes in chlorophyll concentration are revealed for the 7.5 years period of CZCS operation. Areas in the world ocean with maximum absolute and relative differences in chlorophyll concentration during different seasons were found. Results are illustrated with a chart of areas in the Atlantic Ocean discerned by dynamic parameters.

Scopus
Держатели документа:
Institute of Biophysics, Academgorodok 660036 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.P.; Vysotskaya, G.S.; Gitelson, J.I.

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13.

Seasonal changes in spectral brightness of agricultural crops as a function of chlorophyll content and plant conditions / A. F. Sid'ko, A. P. Shevyrnogov // Mapping Sciences and Remote Sensing. - 1999. - Vol. 36, Is. 2. - P79-91 . - ISSN 0749-3878
Кл.слова (ненормированные):
brightness temperature -- crop -- optical method -- physiology -- seasonal variation
Аннотация: The results of multiyear research on the condition of agricultural crops are analyzed on the basis of data on the reflectance of plants during their growing season. A universal method is proposed for assessing the physiological state and content of plant pigments on the basis of the chlorophyll potential S(t) in the red absorption band ? = 680 nm, as determined from spectral brightness coefficients.

Scopus
Держатели документа:
Biophysics Institute, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Sid'ko, A.F.; Shevyrnogov, A.P.

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14.

Measurement of chlorophyll in surface waters from an airplane / I. A. Terskov, I. I. Gitel'zon, A. P. Shevyrnogov // Doklady Biophysics. - 1976. - Vol. Vol.226-228. - P30-33 . - ISSN 0012-4974
Кл.слова (ненормированные):
chlorophyll -- methodology

Scopus
Держатели документа:
L.V. Kirenskii Inst. Phys., Acad. Sci. USSR, Siberian Branch, Krasnoyarsk, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Terskov, I.A.; Gitel'zon, I.I.; Shevyrnogov, A.P.

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15.

Ocean processes revealing by seasonal dynamics of surface chlorophyll concentration (by satellite data) / A. Shevyrnogov, G. Vysotskaya // Proceedings of SPIE - The International Society for Optical Engineering. - 2011. - Vol. 8175: Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2011 (21 September 2011 through 22 September 2011, Prague) Conference code: 87287. - Ст. 1, DOI 10.1117/12.897819
Кл.слова (ненормированные):
Chlorophyll concentration -- MODIS -- Ocean -- Sea surface temperature -- SeaWiFs -- Chlorophyll concentration -- MODIS -- Ocean -- Sea surface temperatures -- SeaWiFs -- Atmospheric temperature -- Band structure -- Chlorophyll -- Dynamics -- Ecology -- Hydrophilicity -- Productivity -- Remote sensing -- Satellites -- Sea ice -- Space optics -- Spatial distribution -- Surface properties -- Time series -- Time series analysis -- Oceanography
Аннотация: Continuous monitoring of phytopigment concentrations and sea surface temperature in the ocean by space-borne methods makes possible to estimate ecological condition of biocenoses in critical areas. In the papers of the authors (Shevyrnogov A.P., Vysotskaya G.S., Gitelzon J.I. 1996) existence of zones, which are quasi-stationary with similar seasonal dynamics of chlorophyll concentration at surface layer of ocean, was shown. Results were obtained on the base of processing of time series of satellite images SeaWiFS. It was shown that fronts and frontal zones coincide with dividing lines between quasi-stationary areas, especially in areas of large oceanic streams. The usage of the seasonal dynamics gives a possibility to circumvent influence of high-frequency component in investigation of dynamics of spatial distribution of surface streams. In addition, an analyses of unstable ocean productivity phenomena, stood out time series of satellite images, showed existence of areas with different types of instability in the all Global ocean. They are observed as adjacent nonstationary zones of different size, which are associated by different ways with known oceanic phenomena. It is evident that dynamics of a spatial distribution of biological productivity and sea surface temperature can give an additional knowledge of complicated picture of surface oceanic layer hydrology. В© 2011 SPIE.

Scopus
Держатели документа:
Institute of Biophysics of SB RAS, Akademgorodok, 660036, Krasnoyarsk, Russian Federation
Institute of Computational Modeling of SB RAS, Akademgorodok, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, Kyrensky st., 26, Krasnoyarsk, 660074, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.

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16.

Long-term dynamics of chlorophyll concentration in the ocean surface layer (by space data) / A. Shevyrnogov, G. Vysotskaya // Advances in Space Research. - 2007. - Vol. 39, Is. 1. - P197-202, DOI 10.1016/j.asr.2006.10.015 . - ISSN 0273-1177
Кл.слова (ненормированные):
Dynamics -- Ocean -- Phytopigment -- Climatology -- Concentration (process) -- Hydrology -- Marine biology -- Ocean currents -- Plants (botany) -- Biosphere -- Ocean -- Phytopigments -- Chlorophyll
Аннотация: To preserve the biosphere and to use it efficiently, it is necessary to gain a deep insight into the dynamics of the primary production process on our planet. Variability of chlorophyll concentration in the ocean is one of the most important components of this process. These investigations are, however, very labor-consuming, because of the difficulties related to the accessibility of the water surface and its large size. In this work long-term changes in chlorophyll concentration in the surface layer of the ocean have been analyzed on the basis of the CZCS data for 7.5 years from 1979 to 1986 and the SeaWiFS data from 1997 to 2004. It has been shown that the average chlorophyll concentration calculated in all investigated areas varies moderately. However, when analyzing spatially local trends, the areas have been detected that have significant rise and fall of chlorophyll concentrations. Some interesting features of the long-term dynamics of chlorophyll concentration have been found. The opposite directions of long-term trends (essential increase or decrease) cannot be explained only by large-scale hydrological phenomena in the ocean (currents, upwellings, etc.). The measured chlorophyll concentration results from the balance between production and destruction processes. Which process dominates is determined by various hydrophysical, hydrobiological, and climatic processes, leading to sharp rises or falls of the concentration. It is important to estimate the scale of the areas in which this or that process dominates. Therefore, the study addresses not only the dynamics of the mean value but also the dynamics of the areas in which the dominance of certain factors has led to a sharp fall or rise in chlorophyll concentration. Thus, the obtained results can be used to estimate long-term changes in the ocean biota. В© 2006 COSPAR.

Scopus
Держатели документа:
Institute of Biophysics of SB RAS, Krasnoyarsk, 660036 Akademgorodok, Russian Federation
Institute of Computational Modeling of SB RAS, Krasnoyarsk, 660036 Akademgorodok, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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Shevyrnogov, A.; Vysotskaya, G.

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17.

Spatial and temporal anomalies of sea surface temperature in global scale (by space-based data) / A. Shevyrnogov, G. Vysotskaya, E. Shevyrnogov // Advances in Space Research. - 2004. - Vol. 33, Is. 7. - P1179-1183, DOI 10.1016/S0273-1177(03)00369-7 . - ISSN 0273-1177
Кл.слова (ненормированные):
Anomalies -- Chlorophyll -- Hydrological structure -- Space-based data -- Temperature -- Chlorophyll -- Data reduction -- Oceanography -- Satellites -- Surface properties -- Temperature measurement -- Satellite images -- Spatial distribution -- Space research -- AVHRR -- chlorophyll -- remote sensing -- satellite imagery -- sea surface temperature
Аннотация: The work presents the data on the spatial distribution of temperature anomalies in the Global Ocean, based on the long-term measurements with the AVHRR satellite equipment. It is noteworthy that such results can be only obtained by using long time series of satellite images. To obtain them by ship-borne methods is actually impossible. The proposed anomaly criterion is equal to a difference between minimum/maximum and average temperature, normed for the mean square deviation. The difference is calculated from the whole time series (with regard to a season). Based on this criterion, anomalies can be distinguished on the background of usual seasonal dynamics at various absolute values of deviations of the measured parameter. Besides, rare, single, fluctuations can be also revealed. Based on the proposed criterion, connected zones have been defined. These zones occur almost in every part of the Global Ocean. The data obtained have been analyzed in association with the CZCS (1978-1986) and SeaWiFS satellite images in order to compare them with the areas of anomalous dynamics of chlorophyll concentration and the regions quasistationary in the seasonal dynamics of chlorophyll. Anomalies in the temperature dynamics are of exceptional importance for the formation of climatic deviations; they affect the ocean-atmosphere interaction and reflect variations in the hydrological structure of the surface waters. The work presents a comparison with the dynamics of chlorophyll concentration distribution determined from the SeaWiFS data for the Atlantic Ocean. В© 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.

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Держатели документа:
Institute of Biophysics of SB RAS, Krasnoyarsk, Akademgorodok 660036, Russian Federation
Inst Comp Modeling of SB RAS, Krasnoyarsk, Akademgorodok 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Shevyrnogov, E.

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18.

Results of analysis of spatial and temporal long-term stability of quasistationary areas in the Atlantic Ocean based on multi-satellite measurements (CZCS and SeaWiFS data) / A. Shevyrnogov, G. Vysotskaya, E. Shevyrnogov // Advances in Space Research. - 2004. - Vol. 33, Is. 7. - P1184-1188, DOI 10.1016/S0273-1177(03)00366-1 . - ISSN 0273-1177
Кл.слова (ненормированные):
Chlorophyll -- Hydrological structure -- Seasonal dynamics -- Space-based data -- Chlorophyll -- Data reduction -- Hydrology -- Oceanography -- Satellites -- Quasistationary -- Spatial distribution -- Space research -- chlorophyll -- CZCS -- oceanic circulation -- remote sensing -- SeaWiFS -- spatiotemporal analysis -- Atlantic Ocean
Аннотация: The paper analyzes the stability of areas in the Global Ocean, which are quasistationary with respect to the seasonal dynamics of chlorophyll concentration. Such areas were first discovered based on the CZCS data. They occur almost in all regions of the Global Ocean. They reflect typical seasonal dynamics of phytoplankton, which depends on both large ocean currents and local hydrological instability. It is related to the displacement of frontal zones and to local hydrological anomalies. Since the completion of the CZCS work there has been a 10 years gap in monitoring chlorophyll spatial distribution dynamics in the ocean. The reason is the long absence of equipment on the orbit, which would be suitable for the measurement of chlorophyll concentration. Recently, SeaWiFS data have been accumulated and their quantity is sufficient for the crude statistical analysis of image time series for 25 years. Thus, it has become possible to obtain data on the long-term stability of quasistationary areas and, therefore, on the stability of large-scale hydrological phenomena in the Atlantic Ocean. В© 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics of SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Inst Comp Modeling of SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Shevyrnogov, E.

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19.

A study of the stationary and the anomalous in the ocean surface chlorophyll distribution by satellite data / A. Shevyrnogov, G. Vysotskaya, E. Shevyrnogov // International Journal of Remote Sensing. - 2004. - Vol. 25, Is. 7-8. - P1383-1387 . - ISSN 0143-1161
Кл.слова (ненормированные):
Chlorophyll -- Data reduction -- Oceanography -- Planets -- Probability -- Satellite communication systems -- Biospheres -- Remote sensing -- chlorophyll -- concentration (composition) -- remote sensing -- satellite data -- sea surface
Аннотация: Variability of chlorophyll concentration in the ocean is one of the most important components of the primary production process on the planet. To preserve the biosphere and to make appropriate use of it, it is imperative to have a deep insight into the long-term dynamics of the primary production on the planet. To investigate the dynamics of chlorophyll concentration based on satellite data, the Institute of Biophysics (Russian Academy of Sciences, Siberian Branch) has developed a geoinformation system. It was used to detect the areas in the global ocean that are quasistationary in relation to seasonal dynamics of chlorophyll concentration. Areas such as these, found in the Indian Ocean, are described in this work. These areas form the basis for the analysis of long-term dynamics of chlorophyll concentration. In these quasistationary zones systematic monitoring of phytopigment concentration is conducted by space-borne and marine craft. The work presents long-term satellite-based data on the space distribution of anomalous deviations of chlorophyll concentration in the ocean. An anomaly criterion is proposed and maps of Pacific Ocean areas with a high probability of anomalies are presented. В© 2004 Taylor and Francis Ltd.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Inst. Computational Modeling SB RAS, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Shevyrnogov, E.

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20.

Trends of chlorophyll concentration in the surface layer of the Northern and Central Atlantic, a satellite data-based study / A. Shevyrnogov, G. Vysotskaya, E. Shevyrnogov // Advances in Space Research. - 2002. - Vol. 30, Is. 11. - P2535-2540, DOI 10.1016/S0273-1177(02)80332-5 . - ISSN 0273-1177
Кл.слова (ненормированные):
Chlorophyll -- Climatology -- Data reduction -- Ocean engineering -- Satellites -- Surface properties -- Chlorophyll concentration -- Space research -- chlorophyll -- pigment -- remote sensing -- seasonality -- surface water -- Atlantic Ocean
Аннотация: The new data on anomalies in seasonal dynamics of chlorophyll concentration in the ocean have altered the approach to the analysis of long-term trends of phytopigments in the surface layer of the ocean. Zones have been found in which at various times there was a many-fold increase in chlorophyll concentration versus its usual level. These changes are local in time and space. If anomalies in the long-term tendencies in the change of phytopigment surface distribution in the ocean are ignored in the analysis, the resulting picture will inadequately reflect the real processes. The work presents the results of the analysis of long-term trends of chlorophyll concentration on the basis of the CZCS satellite data in the Atlantic Ocean. The results are given as maps representing different variants of trends. The data obtained can be used to analyze the consequences of long-term changes of climate and changes in the interaction between the atmosphere and the ocean. В©2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics of SB RAS, Krasnoyarsk, Russian Federation
Inst. of Comp. Modelling of SB RAS, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Shevyrnogov, E.

Найти похожие