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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gaevsky N.A., Kolmakov V.I., Anishchenko O.V., Gorbaneva T.B.
Заглавие : Using DCMU-fluorescence method for the identification of dominant phytoplankton groups
Колич.характеристики :12 с
Место публикации : J. Appl. Phycol.: SPRINGER, 2005. - Vol. 17, Is. 6. - P483-494. - ISSN 0921-8971, DOI 10.1007/s10811-005-2903-x
Примечания : Cited References: 28
Предметные рубрики: IN-VIVO
CHLOROPHYLL FLUORESCENCE
FLUOROMETRIC METHOD
SITU
PHOTOSYNTHESIS
CYANOBACTERIA
ALGAE
EVOLUTION
CULTURES
LAKES
Ключевые слова (''Своб.индексиров.''): algae--chlorophyll--fluorescence--vizualization
Аннотация: For the identification of ecologically significant dominant groups of phytoplanktonic algae a polychromatic DCMU-induced fluorescence method is recommended. A special fluorometer equipped with a system of replaceable filters is used to differentiate three regions of the spectrum (410 +/- 20, 510 +/- 20 and 540 +/- 10 nm) that can excite the basic light-harvesting pigments. Total and differential (for every algal taxon studied) chlorophyll a calculated from the fluorescence signals is in good agreement with biomass estimates from direct cell counts for several different trophic types of aquatic systems. This is made possible by the vizualization of the ratios of fluorescence signal values in their own coordinates: first, to decide whether it is necessary to correct linear equations in order to eliminate negative solutions; second, to determine the possibility of nulling the negative solution if a point is situated close to a side of the triangle; and third, to reduce the number of linear algebraic equations to two if the points are situated along one of the triangle sides or to one if the points are gathered at the apex. The polychromatic DCMU-induced fluorescence method can be used for monitoring natural phytoplankton populations to detect changes in their taxonomic structure.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Biel K.Y., Fomina I.R., Nazarova G.N., Soukhovolsky V.G., Khlebopros R.G., Nishio J.N.
Заглавие : Untangling metabolic and spatial interactions of stress tolerance in plants. 1. Patterns of carbon metabolism within leaves
Место публикации : Protoplasma. - 2010. - Vol. 245, Is. 1. - С. 49-73. - ISSN 0033183X (ISSN) , DOI 10.1007/s00709-010-0135-7
Ключевые слова (''Своб.индексиров.''): carbon metabolism--leaf anatomy--leaf form and function--maximal ecological utility--photosynthesis--stress tolerance spinacia oleracea--aspartate aminotransferase isoenzyme 1--bicarbonate--carbon--carbon dioxide--catalase--chlorophyll--malate dehydrogenase--oxygen--ribulosebisphosphate carboxylase--vegetable protein--article--enzymology--histology--light--metabolism--oxidation reduction reaction--photosynthesis--physiological stress--physiology--plant leaf--spinach--theoretical model--aspartate aminotransferase, cytoplasmic--bicarbonates--carbon--carbon dioxide--catalase--chlorophyll--light--malate dehydrogenase--models, theoretical--oxidation-reduction--oxygen--photosynthesis--plant leaves--plant proteins--ribulose-bisphosphate carboxylase--spinacia oleracea--stress, physiological--spinacia oleracea
Аннотация: The localization of the key photoreductive and oxidative processes and some stress-protective reactions within leaves of mesophytic C3 plants were investigated. The role of light in determining the profile of Rubisco, glutamate oxaloacetate transaminase, catalase, fumarase, and cytochrome-c-oxidase across spinach leaves was examined by exposing leaves to illumination on either the adaxial or abaxial leaf surfaces. Oxygen evolution in fresh paradermal leaf sections and CO2 gas exchange in whole leaves under adaxial or abaxial illumination was also examined. The results showed that the palisade mesophyll is responsible for the midday depression of photosynthesis in spinach leaves. The photosynthetic apparatus was more sensitive to the light environment than the respiratory apparatus. Additionally, examination of the paradermal leaf sections by optical microscopy allowed us to describe two new types of parenchyma in spinach-pirum mesophyll and pillow spongy mesophyll. A hypothesis that oxaloacetate may protect the upper leaf tissue from the destructive influence of active oxygen is presented. The application of mathematical modeling shows that the pattern of enzymatic distribution across leaves abides by the principle of maximal ecological utility. Light regulation of carbon metabolism across leaves is discussed. В© 2010 Springer-Verlag.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrnogov A., Vysotskaya G., Shevyrnogov E.
Заглавие : Trends of chlorophyll concentration in the surface layer of the Northern and Central Atlantic, a satellite data-based study
Место публикации : Advances in Space Research. - 2002. - Vol. 30, Is. 11. - С. 2535-2540. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(02)80332-5
Ключевые слова (''Своб.индексиров.''): 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.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shevyrnogov A..., Vysotskaya G..., Shevyrnogov E...
Заглавие : Trends of chlorophyll concentration in the surface layer of the northern and central Atlantic, a satellite data-based study
Колич.характеристики :6 с
Место публикации : EARTH'S ATMOSPHERE, OCEAN AND SURFACE STUDIES. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON-ELSEVIER SCIENCE LTD, 2002. - Vol. 30: A0 1, A0 4-A0 5, A3 1, C1 1 and C2 6 Symposia of the COSPAR Scientific Commissions A and C held at the 33rd COSPAR Scientific Assembly (JUL , 2000, WARSAW, POLAND), Is. 11. - P2535-2540. - ISBN 0273-1177, DOI 10.1016/S0273-1177(02)80332-5
Примечания : Cited References: 7
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. (C) 2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterenko T.V., Shikhov V.N., Tikhomiro A.A.
Заглавие : Thermoinduction of chlorophyll fluorescence and the age-related condition of higher plant leaves
Место публикации : Russian Journal of Plant Physiology. - 2001. - Vol. 48, Is. 2. - С. 244-251. - ISSN 10214437 (ISSN) , DOI 10.1023/A:1009016520582
Ключевые слова (''Своб.индексиров.''): development--leaf--thermoinduction of chlorophyll fluorescence--cucumis--cucumis sativus--embryophyta--lycopersicon esculentum--sativum--triticum aestivum
Аннотация: The age-related changes in the temperature dependence curves (TDC) of chlorophyll fluorescence were studied in leaf segments of wheat (Triticum aestivum L.), tomato (Lycopersicum esculentum Mill.), and cucumber (Cucumis sativum L.) plants grown under controlled photoculture conditions. Three major TDC patterns of chlorophyll fluorescence were identified within the temperature range of 25-70В°C, with each of the patterns corresponding to a certain phase of leaf development. The transition from one type of thermogram to another was a gradual and ordered process. The magnitude of the low-temperature TDC peak increased until leaves completely expanded and declined with leaf senescence. In the course of leaf senescence, the thermograms exhibited an additional shoulder, which further changed into a peak at 55-65В°C with increasing magnitude. Our data provide the basis for assessing leaf age from the type of chlorophyll fluorescence thermogram and the changes in the particular indices characteristic of TDC of chlorophyll fluorescence.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterenko T.V., Shikhov V.N., Tikhomirov A.A.
Заглавие : Thermoinduction of chlorophyll fluorescence and the age-related condition of higher plant leaves
Колич.характеристики :8 с
Место публикации : Russ. J. Plant Physiol.: MAIK NAUKA/INTERPERIODICA, 2001. - Vol. 48, Is. 2. - P244-251. - ISSN 1021-4437, DOI 10.1023/A:1009016520582
Примечания : Cited References: 27
Ключевые слова (''Своб.индексиров.''): thermoinduction of chlorophyll fluorescence--leaf--development
Аннотация: The age-related changes in the temperature dependence curves (TDC) of chlorophyll fluorescence were studied in leaf segments of wheat (Triticum aestivum L.), tomato (Lycopersicum esculentum Mill.), and cucumber (Cucumis sativum L.) plants grown under controlled photoculture conditions. Three major TDC patterns of chlorophyll fluorescence were identified within the temperature range of 25-70 degreesC, with each of the patterns corresponding to a certain phase of leaf development. The transition from one type of thermogram to another was a gradual and ordered process. The magnitude of the low-temperature TDC peak increased until leaves completely expanded and declined with leaf senescence. In the course of leaf senescence, the thermograms exhibited an additional shoulder, which further changed into a peak at 55-65 degreesC with increasing magnitude. Our data provide the basis for assessing leaf age from the type of chlorophyll fluorescence thermogram and the changes in the particular indices characteristic of TDC of chlorophyll fluorescence.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev Y.S., Tolomeyev A.P.
Заглавие : The vertical distribution of zooplankton in brackish meromictic lake with deep-water chlorophyll maximum
Место публикации : Hydrobiologia. - 2007. - Vol. 576, Is. 1. - С. 69-82. - ISSN 00188158 (ISSN) , DOI 10.1007/s10750-006-0294-x
Ключевые слова (''Своб.индексиров.''): 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.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterenko T. V., Shikhov V. N., Tikhomirov A. A.
Заглавие : The fluorescence method for determining of photosynthetic apparatus reactivity in plant leaves
Колич.характеристики :13 с
Место публикации : Zhurnal Obshchei Biol.: MEZHDUNARODNAYA KNIGA, 2019. - Vol. 80, Is. 3. - С. 187-199. - ISSN 0044-4596, DOI 10.1134/S0044459619030060
Примечания : Cited References:31
Предметные рубрики: ELECTRIC-POTENTIAL DIFFERENCE
FREQUENTLY ASKED QUESTIONS
CHLOROPHYLL
Аннотация: Presently, the most promising way of studying, forecasting, and enhancing of organisms' tolerance to harsh environmental impacts is considered to be the estimation of initial functional state of an organism's regulatory systems. To resolve the problem of photosynthetic apparatus (PSA) tolerance to harsh impacts at the level of such a complicated functional system as a plant leaf, it is necessary to assess integral responses of the leaf's PSA to the impact. At that, simple and versatile traits may have certain advantages. At present, chlorophyll fluorescence seems to be one of the main indices of PSA activity, which can be measured relatively fast and easy. One of the possible approaches to operational integrative assessment of PSA activity may consist in usage of the parameters introduced for the curves of chlorophyll fluorescence induction (CFI) slow phase. Temporal patterns of CFI are of special interest. The simplest index T-0.5 (i.e., half-time of chlorophyll fluorescence intensity decrease during the slow phase of CFI) appears to be an integral characteristic of activation rate with regard to a number of photo-assimilation and photo-protective processes in leaves. On basis of the studies, conducted earlier, and published data, we have analyzed the behavior of T-0.5 parameter with comparison to other CFI traits (namely: qN - non-photochemical quenching coefficient, ETR - electron transport rate, Phi(PSII) - effective quantum yield of PSII photochemistry, F-p/F-T ratio) under different conditions. The influence of leaf senescence, changes in intensity of excitation light, slight dehydration of plants and their recovery from water deficiency have been examined. The pattern of T-0.5 behavior, observed in laboratory experiments, and the results of its comparison with other indices of CFI give occasion to propose the usage of T-0.5 for indirect estimation of PSA activity when operational integrative monitoring of PSA state is required. Further studies are necessary for establishing quantitative relationships between PSA activity and fluorescence parameter T-0.5 under specific stress conditions.
WOS,
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko A.F., Vasil'yev V.A.
Заглавие : Spectral brightness of inland waters and its correlation with phytoplankton content and hydrooptical characteristics
Место публикации : Hydrobiological Journal. - 1988. - Vol. 24, Is. 5. - С. 64-71. - ISSN 00188166 (ISSN)
Ключевые слова (''Своб.индексиров.''): cyanobacteria--diatom--light attenuation--pyrrhophyte--spectral brightness--ussr, dnieper--ussr, krasnoyarsk reservoir--algae--bacillariophyta--chlorophyta--cyanobacteria--dinophyceae--uncultured cyanobacterium
Аннотация: Spectral brightness coefficients are correlated with indices of vertical attenuation of horizontal irradiance, water transparency, phytoplankton chlorophyll content, and phytoplankton distribution. Data were obtained from Krasnoyarsk Reservoir and the Dnieper reservoirs. When diatoms and pyrrhophytes predominate, the maximum spectral brightness is in the vicinity of 580 nm, but when blue-green algae predominate the maxima are in the vicinity of 550 and 720 nm. -from Authors
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrnogov A., Vysotskaya G., Shevyrnogov E.
Заглавие : Spatial and temporal anomalies of sea surface temperature in global scale (by space-based data)
Место публикации : Advances in Space Research. - 2004. - Vol. 33, Is. 7. - С. 1179-1183. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(03)00369-7
Ключевые слова (''Своб.индексиров.''): 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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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shevyrnogov A..., Vysotskaya G..., Shevyrnogov E...
Заглавие : Spatial and temporal anomalies of sea surface temperature in global scale (by space-based data)
Колич.характеристики :5 с
Место публикации : CLIMATE CHANGE PROCESSES IN THE STRATOSPHERE, EARTH-ATMOSPHERE-OCEAN SYSTEMS, AND OCEANOGRAPHIC PROCESSES FROM SATELLITE DATA. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON-ELSEVIER SCIENCE LTD, 2004. - Vol. 33: 2nd World Space Congress/34th COSPAR Scientific Assembly (OCT 10-19, 2002, HOUSTON, TX), Is. 7. - P1179-1183. - ISBN 0273-1177, DOI 10.1016/S0273-1177(03)00369-7
Примечания : Cited References: 6
Ключевые слова (''Своб.индексиров.''): temperature--anomalies--hydrological structure--chlorophyll--space-based data
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. (C) 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrgonov A., Vysotskaya G., Shevyrgonov E.
Заглавие : Spatial and temporal anomalies of chlorophyll concentration in Atlantic ocean (by space-based data)
Место публикации : Advances in Space Research. - 2002. - Vol. 30, Is. 11. - С. 2541-2546. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(02)80334-9
Ключевые слова (''Своб.индексиров.''): chlorophyll--data reduction--ocean engineering--probability--thermal effects--time series analysis--chlorophyll concentration--space research--chlorophyll--remote sensing--sea surface--spatiotemporal analysis--atlantic ocean
Аннотация: The work presents long-standing CZCS-satellite-based data about spatial distribution of anomalies in chlorophyll concentration and temperature of the ocean. An anomaly criterion is proposed. Maps of Atlantic ocean areas with elevated probability of anomalies are given. Properties of anomalous zones in different parts of the Atlantic ocean are discussed. Satellite-based maps of anomaly coefficients for chlorophyll concentration and temperature in the Atlantic ocean have been shown to feature substantial differences, the zones of elevated anomaly of chlorophyll concentration and temperature - to be close only in the vicinity of the Amazon outflow into the Atlantic ocean. Along with fundamental knowledge about dynamics of biological phenomena in the ocean the methods described may be used to reveal deviations due to anthropogenic impact. The methods presented may be used to process SeaWiFS prograna data. The data derived may be used to analyze long-standing time series to estimate randomness of cunent changes. В©2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shevyrnogov A..., Vysotskaya G..., Shevyrnogov E...
Заглавие : Spatial and temporal anomalies of chlorophyll concentration in Atlantic ocean (by space-based data)
Колич.характеристики :6 с
Место публикации : EARTH'S ATMOSPHERE, OCEAN AND SURFACE STUDIES. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON-ELSEVIER SCIENCE LTD, 2002. - Vol. 30: A0 1, A0 4-A0 5, A3 1, C1 1 and C2 6 Symposia of the COSPAR Scientific Commissions A and C held at the 33rd COSPAR Scientific Assembly (JUL , 2000, WARSAW, POLAND), Is. 11. - P2541-2546. - ISBN 0273-1177, DOI 10.1016/S0273-1177(02)80334-9
Примечания : Cited References: 5
Аннотация: The work-presents long-standing CZCS-satellite-based data about spatial distribution of anomalies in chlorophyll concentration and temperature of the ocean. An anomaly criterion is proposed. Maps of Atlantic ocean areas with elevated probability of anomalies are given. Properties of anomalous zones in different parts of the Atlantic ocean are discussed. Satellite-based maps of anomaly coefficients for chlorophyll concentration and temperature in the Atlantic ocean have been shown to feature substantial differences, the zones of elevated anomaly of chlorophyll concentration and temperature - to be close only in the vicinity of the Amazon outflow into the Atlantic ocean. Along with fundamental knowledge about dynamics of biological phenomena in the ocean the methods described may be used to reveal deviations due to anthropogenic impact. The methods presented may be used to process SeaWiFS program data. The data derived may be used to analyze long-standing time series to estimate randomness of current changes. (C) 2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : NESTERENKO T.V., SIDKO F.Y.
Заглавие : SLOW INDUCTION OF CHLOROPHYLL FLUORESCENCE IN CUCUMBER LEAF ONTOGENY
Колич.характеристики :9 с
Место публикации : SOVIET PLANT PHYSIOLOGY: PLENUM PUBL CORP, 1986. - Vol. 33, Is. 4. - P514-522. - ISSN 0038-5719
Примечания : Cited References: 17
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko A.F., Shevyrnogov A.P.
Заглавие : Seasonal dependence of the spectral brightness of agricultural crops on plant chlorophyll content and physiological parameters
Место публикации : Earth Observ. Remote Sens.: HARWOOD ACAD PUBL GMBH, 2000. - Vol. 16, Is. 3. - С. 487-500. - 14. - ISSN 1024-5251
Примечания : Cited References: 18
Аннотация: The paper analyses the results of multi-year studies of the state of agricultural crops based on plant reflectance during the growth period. A universal methodology for determining the physiological state, and plant phytopigment content from the value of the chlorophyll potential S(t) in the region of the red absorption band lambda = 680 nm, which can be determined from the SEC values, is presented. It is shown that addition of mineral fertilisers (and, in particular, nitrogen) to soils, in on average 10 days slows the process of chlorophyll breakdown in phytocoenoses in comparison with control areas.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko A.F., Shevyrnogov A.P.
Заглавие : Seasonal changes in spectral brightness of agricultural crops as a function of chlorophyll content and plant conditions
Место публикации : Mapping Sciences and Remote Sensing. - 1999. - Vol. 36, Is. 2. - С. 79-91. - ISSN 07493878 (ISSN)
Ключевые слова (''Своб.индексиров.''): 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.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrnogov A., Vysotskaya G., Shevyrnogov E.
Заглавие : 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)
Место публикации : Advances in Space Research. - 2004. - Vol. 33, Is. 7. - С. 1184-1188. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(03)00366-1
Ключевые слова (''Своб.индексиров.''): 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.
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18.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shevyrnogov A..., Vysotskaya G..., Shevyrnogov E...
Заглавие : 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)
Колич.характеристики :5 с
Место публикации : CLIMATE CHANGE PROCESSES IN THE STRATOSPHERE, EARTH-ATMOSPHERE-OCEAN SYSTEMS, AND OCEANOGRAPHIC PROCESSES FROM SATELLITE DATA. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON-ELSEVIER SCIENCE LTD, 2004. - Vol. 33: 2nd World Space Congress/34th COSPAR Scientific Assembly (OCT 10-19, 2002, HOUSTON, TX), Is. 7. - P1184-1188. - ISBN 0273-1177, DOI 10.1016/S0273-1177(03)00366-1
Примечания : Cited References: 6
Ключевые слова (''Своб.индексиров.''): chlorophyll--seasonal dynamics--hydrological structure--space-based data
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. (C) 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Anishchenko O.V., Komakov V.I., Gladyshev M.I.
Заглавие : Research of the meteorological factors influence on the fluorescence measurements of subsurface phytoplankton in blooming reservoir
Место публикации : Doklady Akademii Nauk. - 2004. - Vol. 397, Is. 1. - С. 124-127. - ISSN 08695652 (ISSN)
Ключевые слова (''Своб.индексиров.''): 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.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrnogov A. P., Botvich, I. Yu., Kononova N. A., Pis'man T. I.
Заглавие : Remote Ground-Based and Satellite Monitoring of Vegetation
Колич.характеристики :6 с
Коллективы : RAS Siberian Branch Integrated Basic Research Program "Interdisciplinary Integrative Studies" for 2018-2020 [74]
Место публикации : Her. Russ. Acad. Sci.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2018. - Vol. 88, Is. 6. - С. 469-474. - ISSN 1019-3316, DOI 10.1134/S1019331618060138. - ISSN 1555-6492(eISSN)
Примечания : Cited References:20. - This study was performed within the RAS Siberian Branch Integrated Basic Research Program "Interdisciplinary Integrative Studies" for 2018-2020 (project no. 74) and a state assignment (state registration AAAA-A17-117013050027-1).
Предметные рубрики: GROWTH
Аннотация: Prospects for remote ground and satellite sensing to monitor agricultural (agrocenoses) and grass (meadows and steppes) vegetation are considered. This helps assess chlorophyll contents, crop yields, impurities of territories and identify agrocenoses. Investigation of vegetation on salinized soils identified the necessity to consider the succession of limiting factors (temperature and the degree of soil salinization). The results of studies on grassland plant communities in Khakassia based on geobotanical descriptions and ground spectral measurements are presented, allowing the refinement of methods that improve the accuracy of deciphering satellite images of medium and low resolutions.
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