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Temperature dependence of exchange inhomogeneity characteristics in amorphous CoP alloys / R. S. Iskhakov, G. I. Fish, R. G. Khlebopros // Solid State Communications. - 1983. - Vol. 45, Is. 11. - P961-962 . - ISSN 0038-1098
Кл.слова (ненормированные):
COBALT PHOSPHORUS ALLOYS
Аннотация: It has been first shown experimentally that stochastical characteristics of exchange fluctuation in amorphous alloy CoP (P = 9-12 at.%) are mainly caused by compositional (chemical) disorder, i.e. by the degree of supersaturation of solid solution but not by the type of structural state. В© 1983.

Scopus
Держатели документа:
L.V. Kirensky Institute of Physics, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Iskhakov, R.S.; Fish, G.I.; Khlebopros, R.G.

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Utilization of substrate when growing oyster mushroom Pleurotus florida Fovose [Текст] / N. S. Manukovsky, V. S. Kovalev, I. V. Gribovskaya // Mikol. Fitopatol. - 1998. - Vol. 32, Is. 6. - P. 43-46. - Cited References: 8 . - ISSN 0026-3648

РУБ Mycology

Аннотация: Content of biogenic elements in the residual substrate after growing of oyster mushroom Pleurotus florida Fovose on wheat straw was studied. It was calculated, that masses of sulphur, calcium and magnesium in the residual substrate were more than 90 % of their initial masses in wheat straw used for growing. Therefore the accumulation of these elements in the substrate under its repeated recycling for mushroom growing is possible. On the contrary the lack of phosphorus is expected. After washing content of all biogenic elements tested in residual substrate, except for calcium, was lower than their content in wheat straw. The decreasing of mushroom yield under increasing rate of residual substrate in its mixture with wheat straw was shown. Washing of residual substrate did not lead to decreasing of yield.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Manukovsky, N.S.; Kovalev, V.S.; Gribovskaya, I.V.

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Effect of biohumus on growth of oyster fungus Pleurotus ostreatus and Agaricus bisporus [Текст] / N. S. Manukovsky, V. S. Kovalev // Mikol. Fitopatol. - 1998. - Vol. 32, Is. 5. - P. 67-70. - Cited References: 8 . - ISSN 0026-3648

РУБ Mycology

Аннотация: The influence of biohumus on the yeild of oester mushroom has been studied. It was shown, that the highest yeild 9.73 g of dry mass per 100 g of dry substrate mass was an the substrate, containing 25 % of biohumus and 75 % of wheat straw. The possible cause of this effect could arise from increasing phosphorus content in the substrate. The hughest growth rate of champignon mycelium was 2.2-2.4 mm/day on the substrate, containing 94-96 % of wheat grains and 4-6 % of biohumus.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Manukovsky, N.S.; Kovalev, V.S.

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Chemical composition of water conditioned by crowded Moina macrocopa (Crustacea: Cladocera) / G. S. Kalacheva [et al.] // Russian Journal of Ecology. - 2000. - Vol. 31, Is. 2. - P113-117 . - ISSN 1067-4136
Кл.слова (ненормированные):
Chemical analysis -- Chemical composition -- Cladocera -- Metabolic products
Аннотация: The chemical composition of water conditioned by colonies of Moina macrocopa and involved in the regulation of their life cycle was analyzed in comparison with water samples from natural water bodies. Dechlorinated tap water was used as the control medium. The results showed that metabolism of crustaceans leads to an increase in the concentrations of phosphorus and nitrogen in all forms, the appearance of protein and carbohydrate fractions, and changes in the composition of lipid fractions in the water conditioned by their colonies. The contents of all organic components are very low, which makes their identification difficult. Concentrations of substances identified in the conditioned water do not exceed those occurring in nature. В© 2000 MAIK "Nauka/Interperiodica".

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

Доп.точки доступа:
Kalacheva, G.S.; Zadereev, E.S.; Gubanov, V.G.; Gribovskaya, I.V.

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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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On the vertical distribution of microorganisms in Lake Baikal during spring deep-water renewal [Text] / V. V. Parfenova [et al.] // Microbiology. - 2000. - Vol. 69, Is. 3. - P. 357-363. - Cited References: 21 . - ISSN 0026-2617

РУБ Microbiology

Кл.слова (ненормированные):
bacterial population -- phytoplankton and organic matter -- deep-water renewal processes
Аннотация: The vertical distribution of microorganisms during spring deep-water renewal in Lake Baikal was studied. The downward advection of trophogenic waters was found to create conditions for the extensive growth of microorganisms capable of decomposing and mineralizing organic carbon, nitrogen, and phosphorus in deep water layers. These processes occur annually at spring thermal bars near the underwater slope of Lake Baikal, whereas in its pelagic zone. the deep intrusions of waters rich in organic material are observed only in the years when enhanced deep-water renewal is accompanied by a high spring yield of phytoplankton.

WOS
Держатели документа:
Russian Acad Sci, Limnol Inst, Siberian Div, Irkutsk 664033, Russia
Russian Acad Sci, Inst Biophys, Siberian Div, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Parfenova, V.V.; Shimaraev, M.N.; Kostornova, T.Y.; Domysheva, V.M.; Levin, L.A.; Dryukker, V.V.; Zhdanov, A.A.; Gnatovskii, R.Y.; Tsekhanovskii, V.V.; Logacheva, N.F.

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Chemical composition of water conditioned by crowded Moina macracopa (Crustacea : Cladocera) [Text] / G. S. Kalacheva [et al.] // Russ. J. Ecol. - 2000. - Vol. 31, Is. 2. - P. 113-117, DOI 10.1007/BF02828365. - Cited References: 25 . - ISSN 1067-4136

РУБ Ecology
Рубрики:
DAPHNIA-PULEX
   ZOOPLANKTON
   PARAMETERS
   INDUCTION
Кл.слова (ненормированные):
Cladocera -- metabolic products -- chemical analysis -- chemical composition
Аннотация: The chemical composition of water conditioned by colonies of Moina macrocopa and involved in the regulation of their life cycle was analyzed in comparison with water samples from natural water bodies. Dechlorinated tap water was used as the control medium. The results showed that metabolism of crustaceans leads to an increase in the concentrations of phosphorus and nitrogen in all forms, the appearance of protein and carbohydrate fractions, and changes in the composition of lipid fractions in the water conditioned by their colonies. The contents of all organic components are very low, which makes their identification difficult. Concentrations of substances identified in the conditioned water do not exceed those occurring in nature.

WOS
Держатели документа:
Russian Acad Sci, Siberian Div, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kalacheva, G.S.; Zadereev, E.S.; Gubanov, V.G.; Gribovskaya, I.V.

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Intracellular phosphorus pool of the cyanobacterium spirulina platensis / A. Ya. Bolsunovskii, S. V. Kosinenko // Microbiology. - 2000. - Vol. 69, Is. 1. - P116-118 . - ISSN 0026-2617
Аннотация: An intracellular phosphorus pool in a monoculture of the cyanobacterium Spirulina platensis was assessed using radioactive and nonradioactive phosphorus. The derived dependence of specific growth rate on the intracellular content of mineral phosphorus can be presented in the form of the Droop equation. It was found that the stage of replenishment of the intracellular phosphorus pool may affect the phosphorus turnover estimation in aquatic environments from the results of short-term measurements of phosphorus uptake. В© 2000 MAIK "Nauka/Interperiodica".

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

Доп.точки доступа:
Bolsunovskii, A.Ya.; Kosinenko, S.V.

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Intracellular phosphorus pool of the cyanobacterium spirulina platensis / A. Ya. Bolsunovsk, S. V. Kosinenko // Mikrobiologiya. - 2000. - Vol. 69, Is. 1. - С. 135-137 . - ISSN 0026-3656
Кл.слова (ненормированные):
phosphorus -- article -- biomass -- Cyanobacterium -- growth, development and aging -- metabolism -- Biomass -- Cyanobacteria -- Phosphorus
Аннотация: An intracellular phosphorus pool in a monoculture of the cyanobacterium Spirulina platensis was assessed using radioactive and nonradioactive phosphorus. The derived dependence of specific growth rate on the intracellular content of mineral phosphorus can be presented in the form of the Droop equation. It was found that the stage of replenishment of the intracellular phosphorus pool may affect the phosphorus turnover estimation in aquatic environments from the results of short-term measurements of phosphorus uptake.

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

Доп.точки доступа:
Bolsunovsk, A.Ya.; Kosinenko, S.V.

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10.

Experimental investigations of the intensity of phosphorus radionuclide uptake by samples of algobacterial community of the Yenisei River / A. Ya. Bolsunovskij, S. V. Kosinenko // Radiatsionnaya Biologiya. Radioekologiya. - 2001. - Vol. 41, Is. 1. - С. 119-123 . - ISSN 0869-8031
Кл.слова (ненормированные):
phosphorus -- alga -- article -- bacterium -- microbiology -- radiation exposure -- Russian Federation -- water pollution -- Algae -- Bacteria -- Phosphorus Radioisotopes -- Siberia -- Water Microbiology -- Water Pollution, Radioactive -- Algae -- Ecosystems -- Phosphorus -- Radioactivity -- Radioisotopes -- River pollution -- Algobacterial community -- Radioecological concentration -- Yenisei River -- Biological radiation effects
Аннотация: The experiments in which phosphorus radionuclide was added to samples of algobacterial community of the Yenisei River taken near the production area of the Mining-and-Chemical Combine (Zheleznogorsk) made possible determining the uptake rates and coefficients of radionuclide accumulation by microorganisms. Radios between processes of adsorption and accumulation of phosphorus radionuclide by components of water seston (suspended matter) have been determined. The portion of the specific radioactivity of phosphorus adsorbed by unit mass of seston (and algae) has been found to be not more than 7% of the activity accumulated by algal cells.

Scopus
Держатели документа:
Inst. of Biophysics, Siberian Branch, RAS, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovskij, A.Ya.; Kosinenko, S.V.

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11.

Formation of the vertical heterogeneity in the Lake Shira ecosystem: The biological mechanisms and mathematical model / A. G. Degermendzhy [et al.] // Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - P271-297, DOI 10.1023/A:1015621508971 . - ISSN 1386-2588
Кл.слова (ненормированные):
Hydrogen sulphide -- Phytoplankton -- Stratification control -- Sulphate-reducing bacteria -- Sulphur cycle -- Vertical model -- biological production -- community structure -- ecosystem modeling -- nutrient cycling -- plankton -- saline lake -- seasonal variation -- vertical distribution -- Russian Federation -- algae -- Arctodiaptomus -- Bacteria (microorganisms) -- Calanoida -- Chlorophyta -- Copepoda -- Crustacea -- Cyanobacteria -- Dictyosphaerium -- Lyngbya -- Lyngbya contorta
Аннотация: Data on the seasonal changes in vertical heterogeneity of the physical-chemical and biological parameters of the thermally stratified Shira Lake ecosystem (Khakasia, Siberia) in 1996-2000 have been analyzed. The interaction mechanisms involving: (1) The plankton populations in aerobic and anaerobic zones, involving the cycling of carbon and sulphur, (2) the primary production limitation (by light and phosphorus) and inhibition (by light), and (3) the kinetic characteristics of plankton populations have been elucidated. A mathematical model of the vertical structure of the lake's plankton populations, based on the ecosystem description and on vertical turbulent diffusion of the matter, has been constructed. The green alga Dictyosphaerium tetrachotomum (Chlorophyta) and the cyanobacterium Lyngbya contorta (Cyanophyta), which dominated the phytoplankton biomass, were taken as oxygen producers. Arctodiaptomus salinus (a calanoid copepod) has been assumed as the main grazer in Shira Lake as it dominated the zooplankton biomass. Four groups of microorganisms involved in the sulphur cycle formation have been distinguished: sulphur, sulphur purple, sulphur green and SRB. H2S is oxidized to sulphate (only the green sulphur bacteria oxidize it to sulphur), and sulphate is reduced to H2S, forming neither sulphur nor its water-soluble compounds. The role of grazing, light and nutrient limitation, in forming the vertical inhomogeneities, particularly in lowering the depth of the maximal cyanobacterial biomass, has been demonstrated. When the model takes into account both light limitation and nutrient limitation of algal growth by P and consumption of algae by crustaceans: (a) in the scenario where the P is formed only by the cycling and decomposition of autochthonous organic matter, both the green algae and cyanobacteria are eliminated; (b) in the scenario involving an additional P flux in the deep water layers the peak of the cyanobacteria is at a depth of 10 m, and its amplitude is close to the one observed in the lake. The position of the peak remains stable owing to the 'double' limitation mechanism: light 'from above' and P 'from below'. Another mechanism responsible for the deep position of the peak of cyanobacteria was analyzed mathematically based on the model involving the experimentally proven assumption of the growth inhibition by light in the epilimnion and the light limitation in the hypolimnion. The main result is: the peak is positioned stable at its depth and does not change with time. The analytical and numerical calculations made for this positioning mechanism yielded the formulae relating the depth of the maximum of algal biomass, the 'width' of the peak base and the peak amplitude and a number of parameters (algae elimination, turbulent diffusion coefficient, sedimentation rate, light extinction coefficient and light intensity). The theoretical curves for the stratification of chemical and biological parameters have been brought in conformity with field observations, e.g. for the different patterns for the peaks, and the biomass maxima of cyanobacteria, purple and green sulphur bacteria, oxygen, and hydrogen sulphide. The calculations revealed that for an adequate assessment of the parameters for the hydrogen sulphide zone it is necessary to introduce flows of allochthonous organic matter. For the first time, theoretically, based on the form of the sulphur distribution curve, the allochthonous input of organic matter and the inflow of hydrogen sulphide from the bottom have been discriminated. The theoretical limit for the depth up to which the hydrogen-sulphide zone can ascend under the impact of allochthonous organic loading, has been determined.

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

Доп.точки доступа:
Degermendzhy, A.G.; Belolipetsky, V.M.; Zotina, T.A.; Gulati, R.D.

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12.

Predictive radioecological mathematical model of the Yenisei river / A. G. Degermendzhi, L. G. Kosolapova, V. M. Belolipetskij // Radiatsionnaya Biologiya. Radioekologiya. - 2002. - Vol. 42, Is. 4. - С. 433-439 . - ISSN 0869-8031
Кл.слова (ненормированные):
Cesium -- Contamination -- Mathematical models -- Phosphorus -- Radioisotopes -- River pollution -- Cesium 137 -- Phosphorus 32 -- Radioecology -- The Yenisei river -- Ecosystems -- Bacteria (microorganisms) -- fresh water -- article -- ecosystem -- pollutant -- Russian Federation -- theoretical model -- Ecosystem -- Fresh Water -- Models, Theoretical -- Radioactive Pollutants -- Russia
Аннотация: A one-dimensional mathematical model of the Yenisei river ecosystem including hydrological, ecosystem and radioecologicl blocks has been developed. The model was used to evaluate contribution of different processes (transfer by water masses, dilution, radioactive decay, bioaccumulation) into self-purification of the river water from a radiation pollution. The pollution density of ecosystem components (bacteria, phyto-, zooplankton, phyto-, zoobenthos, detritus) with 137Cs and 32P is calculated.

Scopus
Держатели документа:
Inst. of Biophysics, Siberian Branch, RAS, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Degermendzhi, A.G.; Kosolapova, L.G.; Belolipetskij, V.M.

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13.

Recycling efficiencies of C,H,O,N,S, and P elements in a biological life support system based on micro-organisms and higher plants / J. B. Gros [et al.] // Advances in Space Research. - 2003. - Vol. 31, Is. 1. - P195-199, DOI 10.1016/S0273-1177(02)00739-1 . - ISSN 0273-1177
Кл.слова (ненормированные):
Biomass -- Biosynthesis -- Chemical elements -- Earth atmosphere -- Ecosystems -- Life support systems (spacecraft) -- Manned space flight -- Microorganisms -- Plants (botany) -- Wastes -- Compartments -- Space research -- carbon -- carbon dioxide -- hydrogen -- nitrogen -- oxygen -- phosphorus -- sulfur -- space technology -- article -- biological model -- biomass -- chemistry -- comparative study -- computer simulation -- growth, development and aging -- metabolism -- methodology -- microbiology -- microclimate -- plant -- waste management -- Biomass -- Carbon -- Carbon Dioxide -- Computer Simulation -- Ecological Systems, Closed -- Environmental Microbiology -- Hydrogen -- Life Support Systems -- Models, Biological -- Nitrogen -- Oxygen -- Phosphorus -- Plants, Edible -- Sulfur -- Waste Management
Аннотация: MELiSSA is a microorganism based artificial ecosystem conceived as a tool for understanding the behavior of ecosystems and developing the technology for future Manned Space Missions. MELiSSA is composed of four compartments colonized by the microorganisms required by the function of this ecosystem : breakdown of waste produced by men, regeneration of atmosphere and biosynthesis of edible biomass. This paper reports the mass balance description of a Biological Life Support System composed of the MELiSSA loop and of a Higher Plant Compartment working in parallel with the photosynthetic Spirulina compartment producing edible biomass. The recycling efficiencies of the system are determined and compared for various working conditions of the MELiSSA loop with or without the HPC. В© 2002 Published by Elsevier Science Ltd on behalf of COSPAR.

Scopus
Держатели документа:
Lab. de Genie Chimique/Biochimique, Universite B. Pascal, Aubiere cedex 63177, France
ESA/Estec, YVC, P.O. Box 299, Noordwijk, AG 2200, Netherlands
Institute of Biophysics, Siberian branchs RAS, Academgorodok, Krasnoyarsk 630036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gros, J.B.; Poughon, L.; Lasseur, C.; Tikhomirov, A.A.

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14.

Increase of atmospheric CO2: Response patterns on a simple terrestrial man-made ecosystem / L. A. Somova, N. S. Pechurkin, T. I. Pisman // Advances in Space Research. - 2003. - Vol. 31, Is. 7. - P1731-1735, DOI 10.1016/S0273-1177(03)80019-4 . - ISSN 0273-1177
Кл.слова (ненормированные):
Carbon dioxide -- Earth atmosphere -- Ecosystems -- Environmental impact -- Mathematical models -- Microorganisms -- Plants (botany) -- Soils -- Man-made ecosystems -- Space research -- biosphere -- carbon dioxide enrichment -- terrestrial ecosystem -- carbon dioxide -- nitrogen -- phosphorus -- article -- atmosphere -- biological model -- chemistry -- dose response -- drug effect -- ecosystem -- growth, development and aging -- metabolism -- microbiology -- microclimate -- plant root -- wheat -- Atmosphere -- Carbon Dioxide -- Dose-Response Relationship, Drug -- Ecosystem -- Environment, Controlled -- Models, Biological -- Nitrogen -- Phosphorus -- Plant Roots -- Soil Microbiology -- Triticum
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. В© 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

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

Доп.точки доступа:
Somova, L.A.; Pechurkin, N.S.; Pisman, T.I.

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15.

Increase of atmospheric CO2: Response patterns of a simple terrestrial man-made ecosystem [Text] / L. A. Somova, N. S. Pechurkin, T. I. Pisman ; ed. M Nelson [et al.] // 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. - P. 1731-1735, DOI 10.1016/S0273-1177(03)00110-8. - Cited References: 22 . - ISBN 0273-1177

РУБ Engineering, Aerospace + Astronomy & Astrophysics + Ecology + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
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.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Somova, L.A.; Pechurkin, N.S.; Pisman, T.I.; Nelson, M \ed.\; Pechurkin, NS \ed.\; Dempster, WF \ed.\; Somova, LA \ed.\; Somo, , LA \ed.\

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16.

Kinetic characteristics of the theoretical ecosystems with different extent of openness / Ya. V. Galayda [et al.] // Advances in Space Research. - 2005. - Vol. 35, Is. 9 SPEC. ISS. - P1516-1520, DOI 10.1016/j.asr.2005.01.034 . - ISSN 0273-1177
Кл.слова (ненормированные):
Mathematic modeling -- Net primary production -- Residual concentration of biogenic limiting substances -- Trophic chain length -- Mathematic modeling -- Net primary production -- Residual concentration of biogenic limiting substances -- Trophic chain length -- Characterization -- Degradation -- Kinetic theory -- Mathematical models -- Nitrogen -- Phosphorus -- Recycling -- Surface waters -- Ecosystems -- biological model -- biomass -- bioremediation -- conference paper -- ecosystem -- food chain -- microclimate -- Biodegradation, Environmental -- Biomass -- Ecological Systems, Closed -- Ecosystem -- Food Chain -- Life Support Systems -- Models, Biological
Аннотация: In this paper, the influence of the extent of openness of ecosystem that is defined by the dilution rate, which characterizes the extent of flowage of the pond, on the intensity of the biotic circulation in ecosystems with different regulation types, number of trophic links and extent of closing has been investigated. We considered open systems, we took into account the return of the limiting substances, such as nitrogen and phosphorous, into the cycle by degradation of detritus and products of vital functions of consumers. It was shown by the numerical calculations that the increase of the dilution rate in without recycle ecosystems leads to increase of the net primary production up to the maximum value corresponding to the two-link trophic chain (biogenic substance and producer) and then, to gradually decrease. The residual concentration of biogenic limiting substances monotone increases. Net primary production and residual concentration of biogenic limiting substances in systems with recycle with even number of links behaves similarly to that in without recycle ecosystems. In the systems with recycle with the odd number of links that values lies on the stable level. We showed that in wide range of the dilution rate the recycling of the ecosystem can highly increase the net primary production and reduce residual concentration of biogenic limiting substances. The influence of the dilution rate on numbers of links that may exist in the system was analyzed. В© 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Krasnoyarsk State University, Svobodny 79, Krasnoyarsk 660041, Russian Federation
Institute of Biophysics, SB, RAS, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Galayda, Ya.V.; Pechurkin, N.S.; Shirobokova, I.M.; Pisman, T.I.

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17.

Influence of high concentrations of mineral salts on production process and NaCl accumulation by Salicornia europaea plants as a constituent of the LSS phototroph link / N. A. Tikhomirova [et al.] // Advances in Space Research. - 2005. - Vol. 35, Is. 9 SPEC. ISS. - P1589-1593, DOI 10.1016/j.asr.2005.01.055 . - ISSN 0273-1177
Кл.слова (ненормированные):
BLSS -- Intensity of PAR -- Mineral nutrition -- Productivity -- Salicornia europaea -- Biomass -- Concentration (process) -- Nitrogen -- Nutrition -- Photosynthesis -- Productivity -- Sodium chloride -- Bioregenerative life support systems (BLSS) -- Intensity of PAR -- Mineral nutrition -- Salicornia europaea -- Plants (botany) -- calcium -- magnesium -- nitrogen -- phosphorus -- potassium -- sodium chloride -- sulfur -- urea -- biomass -- conference paper -- culture medium -- dose response -- drug effect -- goosefoot -- growth, development and aging -- human -- light -- metabolism -- microclimate -- radiation exposure -- urine -- Biomass -- Calcium -- Chenopodiaceae -- Culture Media -- Dose-Response Relationship, Drug -- Ecological Systems, Closed -- Humans -- Life Support Systems -- Light -- Magnesium -- Nitrogen -- Phosphorus -- Potassium -- Sodium Chloride -- Sulfur -- Urea -- Urine
Аннотация: Use of halophytes (salt-tolerant vegetation), in a particular vegetable Salicornia europaea plants which are capable of utilizing NaCl in rather high concentrations, is one of possible means of NaCl incorporation into mass exchange of bioregenerative life support systems. In preliminary experiments it was shown that S. europaea plants, basically, could grow on urine pretreated with physicochemical processing and urease-enzyme decomposing of urea with the subsequent ammonia distillation. But at the same time inhibition of the growth process of the plants was observed. The purpose of the given work was to find out the influence of excessive quantities of some mineral elements contained in products of physicochemical processing of urine on the production process and NaCl accumulation by S. europaea plants. As the content of mineral salts in the human liquid wastes (urine) changed within certain limits, two variants of experimental solutions were examined. In the first variant, the concentration of mineral salts was equivalent to the minimum salt content in the urine and was: K - 1.5 g/l, P - 0.5 g/l, S - 0.5 g/l, Mg - 0.07 g/l, Ca - 0.2 g/l. In the second experimental variant, the content of mineral salts corresponded to the maximum salt content in urine and was the following: K - 3.0 g/l, P - 0.7 g/l, S - 1.2 g/l, Mg - 0.2 g/l, Ca - 0.97 g/l. As the control, the Tokarev nutrient solution containing nitrogen in the form of a urea, and the Knop nutrient solution with nitrogen in the nitrate form were used. N quantity in all four variants made up 177 mg/l. Air temperature was 24 В°C, illumination was continuous. Light intensity was 690 ?mol/m2s of photosynthetically active radiation. NaCl concentration in solutions was 1%. Our researches showed that the dry aboveground biomass of an average plant of the first variant practically did not differ from the control and totaled 11 g. In the second variant, S. europaea productivity decreased and the dry aboveground biomass of an average plant totaled 8 g. The increase of K quantity in the experimental solutions resulted in an elevated content of the element in the plants. The increase of K uptake in the second experimental variant was accompanied by a 30-50% decrease of Na content in comparison with the other variants. Comparative Na content in the other variants was practically identical. N, Mg and P content in the control and experimental variants was also practically identical. The increase of S quantity in the second experimental variant also increased S uptake by the plants. But Ca quantity, accumulated in aboveground plants biomass in the experimental variants was lower than in the control. NaCl uptake by plants, depending on the concentration of mineral salts in the experimental solutions, ranged from 8 g (maximum salt content) up to 15 g (minimum salt content) on a plant growth area that totaled 0.032 m2. Thus, high concentrations of mineral salts simulating the content of mineral salts contained in urine did not result in a significant decrease of S. europaea productivity. The present work also considers the influence of higher light intensity concentrations on productivity and NaCl accumulation by S. europaea plants grown on experimental solutions with high salt content. В© 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.

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

Доп.точки доступа:
Tikhomirova, N.A.; Ushakova, S.A.; Kovaleva, N.P.; Gribovskaya, I.V.; Tikhomirov, A.A.

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18.

Effect of NaCl concentration on productivity and mineral composition of Salicornia europaea as a potential crop for utilization NaCl in LSS / S. A. Ushakova [et al.] // Advances in Space Research. - 2005. - Vol. 36, Is. 7. - P1349-1353, DOI 10.1016/j.asr.2004.09.017 . - ISSN 0273-1177
Кл.слова (ненормированные):
Life support system -- NaCl -- Salicornia europaea -- Space biology -- Calcium -- Concentration (process) -- Minerals -- Photosynthesis -- Plants (botany) -- Salinity measurement -- Sodium chloride -- Vegetation -- Life support systems -- Liquid wastes -- NaCl -- Salicornea europea -- Space biology -- Space research
Аннотация: The accumulation of solid and liquid wastes in manmade ecosystems presents a problem that has not been efficiently solved yet. Urine, containing NaCl, are part of these products. This is an obstacle to the creation of biological systems with a largely closed material cycling, because the amount of solid and liquid wastes in them must be reduced to a minimum. A possible solution to the problem is to select plant species capable of utilizing sufficiently high concentrations of NaCl, edible for humans, and featuring high productivity. Until recently, the life support systems have included the higher plants that were either sensitive to salinization (wheat, many of the legumes, carrot, potato, maize) or relatively salt-resistant (barley, sugar beet, spinach). Salicomia europaea, whose above-ground part is fully edible for humans, is one of the most promising candidates to be included in life support systems. It is reported in the literature that this plant is capable of accumulating up to 50% NaCl (dry basis). Besides, excessive accumulation of sodium ions should bring forth a decrease in the uptake of potassium ions and other biogenic elements. The aim of this work is to study the feasibility of using S. europaea plants in growth chambers to involve NaCl into material cycling. Plants were grown in vegetation chambers at the irradiance of 100 or 150 W/m2 PAR (photosynthetically active radiation) and the air temperature 24 В°C, by two methods. The first method was to grow the plants on substrate - peat. The peat was supplemented with either 3% NaCl (Variant 1) or 6% NaCl (Variant 2) of the oven-dry mass of the peat. The second method was to grow the plants in water culture, using the solution with a full complement of nutrients, which contained 0.0005% of NaCl, 1% or 2%. The study showed that the addition of NaCl to the substrate or to the solution resulted in the formation of more succulent plants, which considerably increased their biomass. The amount of NaCl uptake was the highest in the plants grown in water culture, 2.6 g per plant. As the sodium uptake increased, the consumption of potassium and the sum of the reduced N forms decreased twofold. The uptake of calcium and magnesium by plants decreased as the NaCl concentration increased; the smallest amounts were taken up by S. europaea grown in water culture. Salinity had practically no effect on the uptake of phosphorus and sulfur. Thus, S. europaea is a promising candidate to be included in life support systems; of special interest is further research on growing these plants in water culture. В© 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.

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

Доп.точки доступа:
Ushakova, S.A.; Kovaleva, N.P.; Gribovskaya, I.V.; Dolgushev, V.A.; Tikhomirova, N.A.

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19.

Seasonal dynamics of akinetes of Anabaena flos-aquae in bottom sediments and water column of small Siberian reservoir / E. S. Kravchuk, E. A. Ivanova, M. I. Gladyshev // Aquatic Ecology. - 2006. - Vol. 40, Is. 3. - P325-336, DOI 10.1007/s10452-006-9031-9 . - ISSN 1386-2588
Кл.слова (ненормированные):
Akinetes -- Cyanobacteria -- Cyanobacterial blooms -- Resting stages -- abundance -- alga -- intertidal environment -- open water -- population dynamics -- reservoir -- sediment -- water column -- Eurasia -- Siberia -- Anabaena -- Anabaena flos-aquae -- Cyanobacteria
Аннотация: Seasonal dynamics of Anabaena flos-aquae (Lyngb.) Breb., including vegetative cells, akinetes and akinete envelopes, in bottom sediments and water column at both littoral and deeper central stations of a small Siberian reservoir was studied. Two types of akinetes were observed: in the first half of summer Anabaena formed akinetes, which served for vegetative reproduction and germinated in water column soon after differentiation, while in the second half of summer the akinetes produced served as a resting stages, which were deposited to bottom sediments. Canonical correlation analyses revealed that decrease of water temperature was the main environmental factor that stimulated the akinete formation. In contrast to the general opinion, concentration of inorganic phosphorus slightly, but positively influenced the akinete formation. Thus, akinetes formed in response to the temperature decrease, needs a certain level of this nutrient. At littoral and open-water stations abundance and seasonal dynamics of akinetes in water column and their sinking pattern were very similar. However, seasonal dynamics of abundance of akinetes in sediments in these two reservoir locations differed: whereas the abundance of akinetes in open water increased permanently during the summer, that in the littoral decreased soon after their sedimentation. The cause for decrease in abundance of akinetes in bottom sediments in winter is unknown. В© Springer 2006.

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Держатели документа:
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:
Kravchuk, E.S.; Ivanova, E.A.; Gladyshev, M.I.

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20.

Influence of sestonic elemental and essential fatty acid contents in a eutrophic reservoir in Siberia on population growth of Daphnia (longispina group) / M. I. Gladyshev [et al.] // Journal of Plankton Research. - 2006. - Vol. 28, Is. 10. - P907-917, DOI 10.1093/plankt/fbl028 . - ISSN 0142-7873
Кл.слова (ненормированные):
eutrophic environment -- fatty acid -- multiple regression -- particulate organic nitrogen -- plankton -- population growth -- reservoir -- seston -- Eurasia -- Siberia -- Daphnia
Аннотация: Dependence of specific integral population growth rate or specific production rate of populations with random size and age structure on elemental and essential fatty acid composition of natural seston was studied in a laboratory flow-through system using a multiple regression. Under a comparatively high content of particulate phosphorus (P), the best single predictor of the growth appeared to be content of eicosapentaenoic acid (EPA, 20:5?3), as it was found earlier for somatic growth of even-aged populations of Daphnia. Regression equation with two independent variables, EPA and particulate nitrogen (N), gave a significantly better fit for the population growth as the dependent variable than the equation with EPA as the single independent variable. Interestingly, there was no significant correlation between N as the single variable and the growth. The essential ?3 fatty acid and N appeared to be complementary indicators of the food quality, which probably limited different constituents (reproductive and somatic) of the integral population growth under the high content of particulate P. В© The Author 2006. Published by Oxford University Press. All rights reserved.

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

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Dubovskaya, O.P.; Makhutova, O.N.; Kalachova, G.S.

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