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Вид документа : Статья из журнала
Шифр издания : 577.34/И 73
Автор(ы) : Болсуновский, Александр Яковлевич, Трофимова, Елена Александровна, Дементьев, Дмитрий Владимирович, Карпов, Антон Дмитриевич
Заглавие : Интенсивность накопления урана-238 представителями разных экологических уровней экосистемы р. Енисей
Коллективы : Институт биофизики Сибирского отделения Российской Академии наук (Красноярск)
Место публикации : Вестник Томского государственного университета. Биология. - Томск: Национальный исследовательский Томский государственный университет, 2016. - № 2 (34) . - С. 161-171. - DOI 10.17223/19988591/34/11
ISSN: 1998-8591
УДК : 577.34 + 597.5
Ключевые слова (''Своб.индексиров.''): коэффициент накопления--трофический уровень--philolimnogammarus viridis--fointinalis antipyretica--thymallus arcticus--esox lucius)
Аннотация: В результате многолетних исследований (2010-2013) получены данные по накоплению урана-238 в гидробионтах разных трофических уровней экосистемы р. Енисей. Пробы водного мха (Fointinalis antipyretica), зообентоса (Philolimnogammarus viridis и Ph. Cyaneus), сибирского хариуса (Thymallus arcticus) и щуки (Esox lucius) отбирали в районе ранее зарегистрированного повышенного содержания урана в воде р. Енисей (вблизи радиоактивных сбросов Горно-химического комбината Росатома). Показано, что уран способен эффективно накапливаться из воды в биомассе всех исследованных гидробионтов. Максимальные коэффициенты накопления (КН) урана получены для водного мха, что многократно превышает КН урана для зообентоса и мышечной ткани рыб. Средние значения КН урана для зообентоса статистически значимо превышают КН в мышцах рыб за весь период наблюдения. Не выявлено статистически значимых отличий в накоплении урана рыбами разного трофического уровня (хариус и щука)The aim of the research was a comparative evaluation of the intensity of uranium-238 accumulation in the biomass of aquatic organisms, occupying different trophic levels in the ecosystem of the Yenisei river. Previously, uranium-238 at concentrations higher than the background ones was detected in water and sediment samples of the Yenisei River collected close to the discharge site of one of the Rosatom facilities (the Mining-and-Chemical Combine). However, radioecological studies of the Yenisei River ecosystem have not focused on uranium isotopes in aquatic organisms so far. The toxic effects of uranium on living organisms are known to be based on its both radioactive and chemical properties. We conducted a study on accumulation of uranium-238 in aquatic organisms at different trophic levels in the Yenisei River ecosystem between 2010 and 2013. We collected samples of aquatic moss (Fointinalis antipyretica), zoobenthos (Philolimnogammarus viridis and Ph. cyaneus), arctic grayling (Thymallus arcticus), and pike (Esox lucius) from the Yenisei region at a distance of 85-90 km downstream of Krasnoyarsk (5-10 km downstream of the radioactive discharge of the Mining-and-Chemical Combine). Data on samples are shown in Table 1. We determined uranium concentration in the samples of aquatic organisms by neutron activation analysis, in water - by ICP-MS (Table 2). The study shows that uranium can be effectively concentrated from water and accumulate in the biomass of all aquatic organisms used in experiments. The highest uranium concentration factors (CFs) were obtained for aquatic moss, and they were several times higher than the uranium CFs for zoobenthos and fish muscles. Based on the uranium concentration from water, all aquatic organisms of the Yenisei River used in this study can be ranked as follows: aquatic moss gammarids grayling = pike. No statistically significant difference has been found between uranium accumulation by fish of different trophic levels (Arctic grayling and pike). The uranium CFs obtained in this study is comparable with the literature data on the CFs of artificial radionuclides for aquatic moss and fish of the Yenisei River
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Белобров П.И., Воеводин В.А., Ерохин В.В., Львов Ю.М., Петушков В.Н., Пузырь А.П., Родионова Н.С.
Заглавие : Взаимодействие бактериальной люцефаразы с амфифильными молекулами в растворе, на поверхности воды и в пленках Ленгмюра-Блоджетт : научное издание
Коллективы :
Место публикации : Препр. - 1988. - N 92Б. - С. 1-28
ГРНТИ : 34.17.09
Предметные рубрики: БИОЛЮМИНЕСЦЕНЦИЯ
ЛЮЦИФЕРАЗА
СВОЙСТВА
БИОСЕНСОРЫ
BACTERIA LUCIFERASE
Р ОРЕ Т Е III SOLUTION WATER FILMS
В О Е О
Аннотация: Исследованы амфифильные свойства бакт. люциферазы в различных условиях и ее взаимодействие с длинноцепоч. алифатич. альдегидом и соответствующей жирной к-той. Методом малоуглового рассеяния рентген. лучей определены радиусы инерции фермента в р-ре и найдены зависимости их от состояния люциферазы. Исследована реология монослоев, полученных из белка, субстрата, продукта и их комбинаций со строго определенными соотношениями на поверхности различных субфаз. Соответствующие 'пи'-А изотермы показывают, что во всех случаях образуются твердые двумерные пленки, сжимаемость к-рых сильно зависит от соотношения компонент. Монослои перенесены на твердую подложку и получены мультислойные пленки на разных носителях. Рентгеновское исследование позволило определить ближний порядок в толстых пленках, к-рый также зависит от соотношения компонент. Метод позволяет конструировать регулярные неоднородности распределения люциферазы в монослое. Результаты электр. микроскопии чистых и смешанных ионо- и бислоев, перенесенных на твердые подложки, свидетельствуют в пользу микроэмульсионной модели амфифильности люциферазы. Получены ленгмюровские пленки с сохранением активности. Это открывает путь к новому поколению люциферазных твердотельных биосенсоров. Библ. 21
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaya O. P., Yolgina O. E., Morozova I. I.
Заглавие : Zooplankton of Lake Pyasino and the Rivers Flowing into It after the Diesel Spill in 2020
Колич.характеристики :11 с
Коллективы : Siberian Branch of the Russian Academy of SciencesRussian Academy of Sciences [223-EP-2020/07]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 4. - С. 380-390. - ISSN 1995-4255, DOI 10.1134/S199542552104003X. - ISSN 1995-4263(eISSN)
Примечания : Cited References:35. - This work was supported by economic agreement no. 223-EP-2020/07 with the Siberian Branch of the Russian Academy of Sciences.
Предметные рубрики: NONPREDATORY MORTALITY
OIL-SPILLS
RECORDS
BASIN
STATE
Аннотация: At the beginning of August, 2 months after 20 000 t of diesel fuel spilled into the Bezymyanny Stream (which took it out to the Daldykan and Ambarnaya rivers), the large Norilsk expedition of the Siberian Branch, Russian Academy of Sciences, sampled net zooplankton at 13 stations located in both sections of these rivers and Lake Pyasino with the Pyasina River outflowing from it. A comparative analysis of the species composition, abundance, biomass, and saprobity index of zooplankton at these stations has been carried out. The productions of rotifer and crustacean zooplankton and potential production of planktivorous fish in Lake Pyasino have been calculated. Based on the state of zooplankton, a gradual improvement in water quality has been observed from river areas exposed to the oil products to the northern part of the lake and the River Pyasina outflow. The low abundance and biomass of zooplankton in the lake (43 800 +/- 17 550 ind./m(3), 112.8 +/- 26.2 mg/m(3), on average) due to the dominance of rotifers (Ploesoma truncatum (Levander), Bipalpus hudsoni (Imhof), and Conochilus unicornis Rousselet) resulted in low values of zooplankton production and the potential production of planktivorous fish (0.85 kg/ha per season).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Neubauer, Darshan, Kolmakova, Olesya, Woodhouse, Jason, Taube, Robert, Mangelsdorf, Kai, Gladyshev, Michail, Premke, Katrin, Grossart, Hans-Peter
Заглавие : Zooplankton carcasses stimulate microbial turnover of allochthonous particulate organic matter
Колич.характеристики :16 с
Коллективы : Projekt DEAL
Место публикации : ISME J.: SPRINGERNATURE, 2021. - Article in press. - ISSN 1751-7362, DOI 10.1038/s41396-020-00883-w. - ISSN 1751-7370(eISSN)
Примечания : Cited References:83. - Open Access funding enabled and organized by Projekt DEAL.
Предметные рубрики: FRESH-WATER
SEASONAL-CHANGES
CARBON
LAKE
DECOMPOSITION
DEGRADATION
Аннотация: Carbon turnover in aquatic environments is dependent on biochemical properties of organic matter (OM) and its degradability by the surrounding microbial community. Non-additive interactive effects represent a mechanism where the degradation of biochemically persistent OM is stimulated by the provision of bioavailable OM to the degrading microbial community. Whilst this is well established in terrestrial systems, whether it occurs in aquatic ecosystems remains subject to debate. We hypothesised that OM from zooplankton carcasses can stimulate the degradation of biochemically persistent leaf material, and that this effect is influenced by the daphnia:leaf OM ratio and the complexity of the degrading microbial community. Fresh Daphnia magna carcasses and C-13-labelled maize leaves (Zea mays) were incubated at different ratios (1:1, 1:3 and 1:5) alongside either a complex microbial community (50 mu m) or solely bacteria (0.8 mu m). C-13 stable-isotope measurements of CO2 analyses were combined with phospholipid fatty acids (PLFA) analysis and DNA sequencing to link metabolic activities, biomass and taxonomic composition of the microbial community. Our experiments indicated a significantly higher respiration of leaf-derived C when daphnia-derived OM was most abundant (i.e. daphnia:leaf OM ratio of 1:1). This process was stronger in a complex microbial community, including eukaryotic microorganisms, than a solely bacterial community. We concluded that non-additive interactive effects were a function of increased C-N chemodiversity and microbial complexity, with the highest net respiration to be expected when chemodiversity is high and the degrading community complex. This study indicates that identifying the interactions and processes of OM degradation is one important key for a deeper understanding of aquatic and thus global carbon cycle.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tang K.W., Gladyshev M.I., Dubovskaya O.P., Kirillin G..., Grossart H.P.
Заглавие : Zooplankton carcasses and non-predatory mortality in freshwater and inland sea environments
Колич.характеристики :16 с
Коллективы : Humboldt Foundation; Ministry of Education and Science of Russian Federation (Siberian Federal University) [B-15]; Leibniz-Association [SAW-2011-IGB-2]; German Science foundation [KI-853/7-1, GR1540/20-1]
Место публикации : J. Plankton Res.: OXFORD UNIV PRESS, 2014. - Vol. 36, Is. 3. - С. 597-612. - ISSN 0142-7873, DOI 10.1093/plankt/fbu014. - ISSN 1464-3774
Примечания : Cited References: 168. - This work was supported by the Humboldt Foundation (Fellowship for Experienced Researchers to K. W. T.); Siberian Branch of Russian Academy of Science (Partner Project No. 8 to M. I. G. and O.P.D.); Federal Tasks of Ministry of Education and Science of Russian Federation (project B-15 of Siberian Federal University to M. I. G.); the Leibniz-Association (SAW-2011-IGB-2 to G. K.); and the German Science foundation (KI-853/7-1 to G. K., GR1540/20-1 to H. P. G.). The manuscript benefited from the constructive comments from three reviewers.
Предметные рубрики: SMALL-SCALE TURBULENCE
NON-CALANOID COPEPODS
AGGREGATES LAKE SNOW
DAPHNIA-GALEATA
MIDSUMMER DECLINE
NONCONSUMPTIVE MORTALITY
CRUSTACEAN ZOOPLANKTON
CLIMATE-CHANGE
VERTICAL-DISTRIBUTION
POPULATION-GROWTH
Ключевые слова (''Своб.индексиров.''): carbon flux--inland waters--lakes--live--dead sorting--non-predatory mortality--zooplankton carcasses
Аннотация: Zooplankton carcasses are ubiquitous in marine and freshwater systems, implicating the importance of non-predatory mortality, but both are often overlooked in ecological studies compared with predatory mortality. The development of several microscopic methods allows the distinction between live and dead zooplankton in field samples, and the reported percentages of dead zooplankton average 11.6 (minimum) to 59.8 (maximum) in marine environments, and 7.4 (minimum) to 47.6 (maximum) in fresh and inland waters. Common causes of non-predatory mortality among zooplankton include senescence, temperature change, physical and chemical stresses, parasitism and food-related factors. Carcasses resulting from non-predatory mortality may undergo decomposition leading to an increase in microbial production and a shift in microbial composition in the water column. Alternatively, sinking carcasses may contribute significantly to vertical carbon flux especially outside the phytoplankton growth seasons, and become a food source for the benthos. Global climate change is already altering freshwater ecosystems on multiple levels, and likely will have significant positive or negative effects on zooplankton non-predatory mortality. Better spatial and temporal studies of zooplankton carcasses and non-predatory mortality rates will improve our understanding of this important but under-appreciated topic.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shulepina S. P., Dubovskaya O. P., Glushchenko L. A.
Заглавие : Zoobenthos of Lake Pyasino and the Rivers Flowing into It after the Diesel Spill of 2020
Колич.характеристики :8 с
Коллективы : Siberian Branch, Russian Academy of SciencesRussian Academy of Sciences [223-EP-2020/07]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 4. - С. 391-398. - ISSN 1995-4255, DOI 10.1134/S1995425521040077. - ISSN 1995-4263(eISSN)
Примечания : Cited References:32. - This work was supported by the Siberian Branch, Russian Academy of Sciences, contract no. 223-EP-2020/07.
Предметные рубрики: CRUDE-OIL SPILL
Аннотация: The species composition and quantitative characteristics of the zoobenthos in Lake Pyasino and rivers flowing into it after a diesel spill have been analyzed. The production of zoobenthos and potential production of benthivorous fish in Lake Pyasino have been calculated. A small number of zoobenthos species and low values of abundance and biomass are revealed. In the Bezymyanny Stream, the mouth of the Daldykan River, and the Ambarnaya River, oligochaetes Limnodrilus hoffmeisteri Claparede and Tubifex tubifex (O. F. Muller) dominate in the zoobenthos abundance and biomass. In Lake Pyasino and the Pyasina River outflow, larvae of caddis flies, chironomids, stoneflies, and amphipods prevail. In the area of the deepwater silted station of Lake Pyasino, oligochaetes L.hoffmeisteri develop, the proportion of which in the benthic fauna at this station (40 and 79% of the total biomass and abundance, respectively) is maximal. The amphipod Monoporeia affinis (Lindstrom) dominates in terms of biomass at this station. A decrease in the chironomid diversity, an increase in the proportion of polysaprobic oligochaetes, and lower values of the Shannon index in Lake Pyasino in 2020 when compared to 1992 are found. The low abundance (2181 +/- 2048 ind./m(2)) and biomass (2.01 +/- 1.85 g/m(2)) of zoobenthos in the lake results in low values of zoobenthos production and the potential production of benthivorous fish (3 kg/ha per season). Based on the state of zoobenthos, an improvement in water quality has been observed from river sections exposed to the oil spill to the lake and the source of the River Pyasina.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Diaz-De-Quijano D., Vladimirovich Ageev A., Anatolevna Ivanova E., Valerevna Anishchenko O.
Заглавие : Winter atmospheric nutrient and pollutant deposition on Western Sayan Mountain lakes (Siberia)
Место публикации : Biogeosciences: Copernicus GmbH, 2021. - Vol. 18, Is. 5. - С. 1601-1618. - ISSN 17264170 (ISSN), DOI 10.5194/bg-18-1601-2021
Аннотация: The world map of anthropogenic atmospheric nitrogen deposition and its effects on natural ecosystems is not described with equal precision everywhere. In this paper, we report atmospheric nutrient, sulfate and spheroidal carbonaceous particle (SCP) deposition rates, based on snowpack analyses of a formerly unexplored Siberian mountain region. Then, we discuss their potential effects on lake phytoplankton biomass limitation. We estimate that the nutrient depositions observed in the late-season snowpack (4016 mgNO3-Nm2 and 0.580.13 mg TP-Pm2; TP for total phosphorous) would correspond to yearly depositions lower than 11971 mgNO3-Nm2 yr1 and higher than 1.710.91 mg TP-Pm2 yr1. These yearly deposition estimates would approximately fit the predictions of global deposition models and correspond to the very low nutrient deposition range, although they are still higher than world background values. In spite of the fact that such a low atmospheric nitrogen deposition rate would be enough to induce nitrogen limitation in unproductive mountain lakes, phosphorus deposition was also extremely low, and the resulting lake water N: P ratio was unaffected by atmospheric nutrient deposition. In the end, the studied lakes' phytoplankton appeared to be split between phosphorus and nitrogen limitation. We conclude that these pristine lakes are fragile sensitive systems exposed to the predicted climate warming, increased winter precipitation, enhanced forest fires and shifts in anthropogenic nitrogen emissions that could finally couple their water chemistry to that of atmospheric nutrient deposition and unlock temperature-inhibited responses of phytoplankton to nutrient shifts. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Diaz A. V., Ageev, Aleksander Vladimirovich, Ivanova, Elena Anatolevna, Anishchenko, Olesia Valerevna
Заглавие : Winter atmospheric nutrient and pollutant deposition on Western Sayan Mountain lakes (Siberia)
Колич.характеристики :18 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-04-00960]; Ministry of Science and Higher Education of the Russian Federation [5-100, FSRZ-2020-0014]
Место публикации : Biogeosciences: COPERNICUS GESELLSCHAFT MBH, 2021. - Vol. 18, Is. 5. - С. 1601-1618. - ISSN 1726-4170, DOI 10.5194/bg-18-1601-2021. - ISSN 1726-4189(eISSN)
Примечания : Cited References:86. - This research has been supported by the Russian Foundation for Basic Research (grant no. 20-04-00960) and the Ministry of Science and Higher Education of the Russian Federation (postdoctoral program project no. 5-100, grant no. FSRZ-2020-0014).
Предметные рубрики: FLY-ASH PARTICLES
NITROGEN DEPOSITION
PHOSPHORUS DEPOSITION
Аннотация: The world map of anthropogenic atmospheric nitrogen deposition and its effects on natural ecosystems is not described with equal precision everywhere. In this paper, we report atmospheric nutrient, sulfate and spheroidal carbonaceous particle (SCP) deposition rates, based on snowpack analyses of a formerly unexplored Siberian mountain region. Then, we discuss their potential effects on lake phytoplankton biomass limitation. We estimate that the nutrient depositions observed in the late-season snowpack (40 +/- 16 mgNO(3)-Nm(-2) and 0.58 +/- 0.13 mg TP-Pm-2; TP for total phosphorous) would correspond to yearly depositions lower than 119 +/- 71 mgNO(3)-Nm(-2) yr(-1) and higher than 1.71 +/- 0.91 mg TP-Pm-2 yr(-1). These yearly deposition estimates would approximately fit the predictions of global deposition models and correspond to the very low nutrient deposition range, although they are still higher than world background values. In spite of the fact that such a low atmospheric nitrogen deposition rate would be enough to induce nitrogen limitation in unproductive mountain lakes, phosphorus deposition was also extremely low, and the resulting lake water N: P ratio was unaffected by atmospheric nutrient deposition. In the end, the studied lakes' phytoplankton appeared to be split between phosphorus and nitrogen limitation. We conclude that these pristine lakes are fragile sensitive systems exposed to the predicted climate warming, increased winter precipitation, enhanced forest fires and shifts in anthropogenic nitrogen emissions that could finally couple their water chemistry to that of atmospheric nutrient deposition and unlock temperature-inhibited responses of phytoplankton to nutrient shifts.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik, Nadezhda N., Yurchenko, Yuri A., Belevich, Olga E., Kalachova, Galina S., Kolmakova, Anzhelika A., Gladyshev, Michail I.
Заглавие : Waterbugs (Heteroptera: Nepomorpha and Gerromorpha) as sources of essential n-3 polyunsaturated fatty acids in Central Siberian ecoregions
Колич.характеристики :15 с
Коллективы : Russian Foundation for Basic Research [13-04-00860]; Russian Federal Tasks of Fundamental Research [51.1.1, VI.51.1.9]; Russian Federation [NSh-9249.2016.5]
Место публикации : Freshw. Biol.: WILEY-BLACKWELL, 2016. - Vol. 61, Is. 10. - С. 1787-1801. - ISSN 0046-5070, DOI 10.1111/fwb.12818. - ISSN 1365-2427(eISSN)
Примечания : Cited References:77. - The work was supported by award no. 13-04-00860 from the Russian Foundation for Basic Research and by the Russian Federal Tasks of Fundamental Research (projects no. 51.1.1 and VI.51.1.9). The research was partially supported by grant NSh-9249.2016.5 from the President of the Russian Federation.
Предметные рубрики: FRESH-WATER
TERRESTRIAL ECOSYSTEMS
BUGS HETEROPTERA
AQUATIC INSECTS
Ключевые слова (''Своб.индексиров.''): essential fatty acids--heteroptera--subsidies--terrestrial consumers--waterbugs--water-land transfers
Аннотация: 1. Aquatic systems are considered to be a main source of essential long-chain n-3 polyunsaturated fatty acids (PUFA), which are preferentially synthesized by microalgae and transferred along food chains to terrestrial consumers. Emerging aquatic insects comprise a significant part of this transfer of the essential PUFA from water to land. Quantitative data on PUFA content and composition are available mainly for rheophilic insects while taxa that are characteristic of wetlands and stagnant water bodies, such as aquatic Heteroptera, remain relatively unstudied. 2. We investigated the role of various waterbug taxa (Heteroptera: Nepomorpha and Gerromorpha) inhabiting different ecoregions in temperate Central Siberia (Russia) as potential sources of PUFA. The ecoregions were steppe, forest-steppe, hemiboreal forest and montane coniferous forest. Although these waterbugs insects are aquatic in both larval and adult stages, they can disperse through the landscape and transfer essential PUFAs from water to land so making them potentially available to terrestrial consumers. 3. Species of Naucoridae, Notonectidae and Corixidae were generally dominant in all ecoregions, attaining maximum biomass in the steppe. We showed that habitat or ecoregion played a major role in the variability of fatty acid composition of Notonectidae and Gerridae but not Corixidae. In contrast, the biochemical composition of the only naucoridae, Ilyocoris cimicoides, was largely affected by life stage. 4. Both the dominant families and species within them differed with respect to their mass-specific contents of essential long-chain PUFA of the n-3 family, namely eicosapentaenoic and docosahexaenoic acids. Corixid species had the highest content of these two essential PUFAs among the waterbug studies, and relative to literature reports for other aquatic insects. Corixids thus appear to be a potentially important vector for transfer of the essential biochemical compounds from water to land, especially in steppe ecoregions with numerous ephemeral water bodies.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalachova G.S., Gladyshev M.I., Sushchik N.N., Makhutova O.N.
Заглавие : Water moss as a food item of the zoobenthos in the Yenisei River
Место публикации : Central European Journal of Biology. - 2011. - Vol. 6, Is. 2. - С. 236-245. - ISSN 1895104X (ISSN) , DOI 10.2478/s11535-010-0115-0
Ключевые слова (''Своб.индексиров.''): acetylenic fatty acids--bryophytes--fontinalis--gammarids--stable isotope analysis--trichopterans--animalia--bryophyta--bryophytes--chironomidae--ephemeroptera--eulimnogammarus viridis--fontinalis--fontinalis antipyretica--gammaridae--invertebrata--trichoptera
Аннотация: Bryophytes are abundant in streams and are a habitat for many invertebrates, but their contribution to the diet of fluvial zoobenthos is still debated. To estimate the amount of bryophyte-derived organic matter assimilated by benthic invertebrates, we used a combination of fatty acid and stable isotope analyses during a four-year monthly study of a littoral site in the Yenisei River (Siberia, Russia). Acetylenic acids, which are highly specific biomarkers of the water moss Fontinalis antipyretica, were found in lipids of all dominant benthic animals: gammarids, ephemeropterans, chironomids and trichopterans. The dominant zoobenthic species, Eulimnogammarus viridis, had maximum levels of the biomarkers in its biomass during winter, and minimum levels in summer. The zoobenthos in the studied site regularly consume and assimilate bryophyte-derived organic matter as a minor supplemental food. This consumption increases in winter, when the main food source of the zoobenthos, epilithic biofilms, are probably scarce. В© 2010 Versita Warsaw and Springer-Verlag Wien.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Kudenko Y.A., Ushakova S.A., Tirranen L.S., Gribovskaya I.A., Gros J.-B., Lasseur C.
Заглавие : Use of human wastes oxidized to different degrees in cultivation of higher plants on the soil-like substrate intended for closed ecosystems
Место публикации : Advances in Space Research. - 2010. - Vol. 46, Is. 6. - С. 744-750. - ISSN 02731177 (ISSN) , DOI 10.1016/j.asr.2010.02.024
Ключевые слова (''Своб.индексиров.''): life support systems--microflora--mineralized human wastes--phototrophic unit--wet incineration--alternating electromagnetic field--bioregenerative life support systems--degree of oxidations--denitrifying microorganisms--growth and development--higher plants--human waste--life support systems--mass exchange--microbiotas--microflora--microscopic fungi--mineralized human wastes--nutrient solution--oxidation level--phytopathogenic bacteria--plant productivity--soil-like substrate--wheat plants--biomolecules--electromagnetic fields--irrigation--magnetic field effects--metabolism--metabolites--oxidation--plants (botany)--soils--solvent extraction--wastes--waste incineration
Аннотация: To close mass exchange loops in bioregenerative life support systems more efficiently, researchers of the Institute of Biophysics SB RAS (Krasnoyarsk, Russia) have developed a procedure of wet combustion of human wastes and inedible parts of plants using H2O2 in alternating electromagnetic field. Human wastes pretreated in this way can be used as nutrient solutions to grow plants in the phototrophic unit of the LSS. The purpose of this study was to explore the possibilities of using human wastes oxidized to different degrees to grow plants cultivated on the soil-like substrate (SLS). The treated human wastes were analyzed to test their sterility. Then we investigated the effects produced by human wastes oxidized to different degrees on growth and development of wheat plants and on the composition of microflora in the SLS. The irrigation solution contained water, substances extracted from the substrate, and certain amounts of the mineralized human wastes. The experiments showed that the human wastes oxidized using reduced amounts of 30% H2O2: 1 ml/g of feces and 0.25 ml/ml of urine were still sterile. The experiments with wheat plants grown on the SLS and irrigated by the solution containing treated human wastes in the amount simulating 1/6 of the daily diet of a human showed that the degree of oxidation of human wastes did not significantly affect plant productivity. On the other hand, the composition of the microbiota of irrigation solutions was affected by the oxidation level of the added metabolites. In the solutions supplemented with partially oxidized metabolites yeast-like microscopic fungi were 20 times more abundant than in the solutions containing fully oxidized metabolites. Moreover, in the solutions containing incompletely oxidized human wastes the amounts of phytopathogenic bacteria and denitrifying microorganisms were larger. Thus, insufficiently oxidized sterile human wastes added to the irrigation solutions significantly affect the composition of the microbiological component of these solutions, which can ultimately unbalance the system as a whole. В© 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petushkov V.N., van Stokkum IHM, Gobets B..., van Mourik F..., Lee J..., van Grondelle R..., Visser AJWG
Заглавие : Ultrafast fluorescence relaxation spectroscopy of 6,7-dimethyl-(8-ribityl)-lumazine and riboflavin, free and bound to antenna proteins from bioluminescent bacteria
Колич.характеристики :6 с
Место публикации : J. Phys. Chem. B: AMER CHEMICAL SOC, 2003. - Vol. 107, Is. 39. - P10934-10939. - ISSN 1520-6106, DOI 10.1021/jp034266e
Примечания : Cited References: 52
Предметные рубрики: TIME-RESOLVED FLUORESCENCE
VIBRIO-FISCHERI Y1
FEMTOSECOND SOLVATION DYNAMICS
FLAVIN ADENINE-DINUCLEOTIDE
PHOTOBACTERIUM-LEIOGNATHI
BIOLOGICAL WATER
SOLVENT DYNAMICS
DIELECTRIC-RELAXATION
MOLECULAR-DYNAMICS
TRYPTOPHAN
Аннотация: The solvation dynamics of interesting bioluminescent chromophores have been determined, using subpicosecond and wavelength-resolved fluorescence spectroscopy, in combination with global analysis of the multidimensional data sets. The systems investigated comprise the free ligands 6,7-dimethyl-(8-ribityl)-lumazine (lumazine) and riboflavin in an aqueous buffer and both ligands when noncovalently bound to two bacterial bioluminescent antenna proteins: lumazine protein (from Photobacterium leiognathi) and the blue fluorescent protein (from Vibrio fischeri Y1). Fluorescence spectral relaxation of the free ligands is complete within a few picoseconds. Subsequently, the fluorescence intensity increases by similar to7% on a time scale of 15-30 ps. Fluorescence spectral relaxation of the protein-bound ligands is largely complete within 1 ps but reveals a small red shift with a minor, but distinctly longer, relaxation time than that of the free ligands, which is tentatively assigned to the relaxation of protein-bound water in the vicinity of the excited chromophore.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petushkov V.N., Van Stokkum I.H.M., Gobets B., Van Mourik F., Lee J., Van Grondelle R., Visser A.J.W.G.
Заглавие : Ultrafast fluorescence relaxation spectroscopy of 6,7-dimethyl-(8-ribityl)-lumazine and riboflavin, free and bound to antenna proteins from bioluminescent bacteria
Место публикации : Journal of Physical Chemistry B. - 2003. - Vol. 107, Is. 39. - С. 10934-10939. - ISSN 15206106 (ISSN)
Ключевые слова (''Своб.индексиров.''): bacteria--bioluminescence--chemical relaxation--chromophores--dielectric properties--proteins--solvents--bioluminescent bacteria--dimethyl ribityl lumazine--photobacterium leiognathi--riboflavin--ultrafast fluorescence relaxation spectroscopy--fluorescence
Аннотация: The solvation dynamics of interesting bioluminescent chromophores have been determined, using subpicosecond and wavelength-resolved fluorescence spectroscopy, in combination with global analysis of the multidimensional data sets. The systems investigated comprise the free ligands 6,7-dimethyl-(8-ribityl)-lumazine (lumazine) and riboflavin in an aqueous buffer and both ligands when noncovalently bound to two bacterial bioluminescent antenna proteins: lumazine protein (from Photobacterium leiognathi) and the blue fluorescent protein (from Vibrio fischeri Y1). Fluorescence spectral relaxation of the free ligands is complete within a few picoseconds. Subsequently, the fluorescence intensity increases by ?7% on a time scale of 15-30 ps. Fluorescence spectral relaxation of the protein-bound ligands is largely complete within 1 ps but reveals a small red shift with a minor, but distinctly longer, relaxation time than that of the free ligands, which is tentatively assigned to the relaxation of protein-bound water in the vicinity of the excited chromophore.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Puzyr A. P., Burov A. E., Medvedeva S. E., Burova O. G., Bondar V. S.
Заглавие : Two forms of substrate for the bioluminescent reaction in three species of basidiomycetes
Место публикации : Mycol.: Taylor and Francis Ltd., 2019. - Vol. 10, Is. 2. - С. 84-91. - ISSN 21501203 (ISSN) , DOI 10.1080/21501203.2019.1583688
Ключевые слова (''Своб.индексиров.''): cold and hot extracts--culture liquid--enzymatic system--hispidin--luminous fungi--substrate of luminescent reaction
Аннотация: The luminescent response of the enzymatic system of Armillaria borealis on the cold and hot extracts from cell-free culture liquids of Inonotus obliquus, Pholiota sp. and A. borealis was examined. The greatest influence on the light emission produced by the luminescent system of A. borealis was provided by the temperature at which the probes were prepared for assay. Boiling a culture liquid on water bath for a few minutes promoted a multifold increase in the luminescence. The results of luminescence assay suggest that the substance involved in the bioluminescent reaction in higher fungi is presented in culture liquids and mycelia in two forms. In one form, it is ready to interact with the enzymatic system and in the second form, it becomes accessible for the reaction after heat treatment. The pool of thermoactivated substance was found to be much large than the amount of the ready accessible one. We suggest that predecessors of hispidin, which is fungal luciferin precursor, are responsible for this phenomenon. They are not involved in bioluminescence at their original state and are converted into the substrate under the influence of high temperature. © 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Granin N.G., Jewson D..., Gnatovskii R.Y., Levin L.A., Zhdanov A.A., Averin A.I., Gorbunova L.A., Tsekhanovskii V.V., Doroshchenko L.F., Min'ko N.P., Grachev M.A.
Заглавие : Turbulent mixing in the water layer just below the ice and its role in development of diatomic algae in Lake Baikal
Колич.характеристики :5 с
Место публикации : Dokl. Akad. Nauk: MEZHDUNARODNAYA KNIGA, 1999. - Vol. 366, Is. 6. - P835-839. - ISSN 0869-5652
Примечания : Cited References: 15
Предметные рубрики: LIFE-CYCLE
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovskii A.Ya., Bondareva L.G.
Заглавие : Tritium in water bodies of the Yenisei Basin in the impact zone of the mining-and-chemical plant of the Ministry of the Nuclear Power Industry of the Russian Federation
Место публикации : Russian Journal of Ecology. - 2005. - Vol. 36, Is. 1. - С. 52-56. - ISSN 10674136 (ISSN) , DOI 10.1007/s11184-005-0009-y
Ключевые слова (''Своб.индексиров.''): pore water--the integrated mining chemical plant--the yenisei--tritium--tritium--tritium
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A.Y., Bondareva L.G.
Заглавие : Tritium in surface waters of the Yenisei River basin
Колич.характеристики :10 с
Место публикации : J. Environ. Radioact.: ELSEVIER SCI LTD, 2003. - Vol. 66, Is. 3. - P285-294. - ISSN 0265-931X, DOI 10.1016/S0265-931X(02)00132-7
Примечания : Cited References: 11
Ключевые слова (''Своб.индексиров.''): tritium--yenisei river basin--surface and ground waters--nuclear reactor--deep-well injection of radionuclides
Аннотация: This paper reports an investigation of the tritium content in the surface waters of the Yenisei River basin near the Mining and Chemical Combine (MCC). In 2001 the maximum tritium concentration in the Yenisei River did not exceed 4 +/- 1 Bq l(-1), which is consistent with the data of 1998-99. However, it has been found that there are surface waters containing enhanced tritium as compared with the background values for the Yenisei River. For instance, in the Ploskii Stream and the Shumikha River the maximum tritium concentrations amount to 168 and 81 Bq l(-1), respectively. The source of tritium in these surface waters is the last operating reactor at the MCC, which still uses the Yenisei water as coolant. In water and sediment samples of the Bolshaya Tel River (a tributary of the Yenisei River) the tritium content turned out to be at least 10 times higher than the background values for the Yenisei River. The measurements conducted at the RPA RADON (Moscow) revealed not only tritium but also the artificial radionuclide C-14 in the Bolshaya Tel samples. The data obtained suggest that the Bolshaya Tel River receives the major part of tritium from sediments rather than from the water catchment area. This allows the conclusion that there is water exchange between the surface waters and the radioactively contaminated underground horizons of the "Severny" testing site. (C) 2002 Elsevier Science Ltd. All rights reserved.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A.Y., Bondareva L.G.
Заглавие : Tritium in surface waters of the Yenisei River basin
Место публикации : Journal of Environmental Radioactivity. - 2003. - Vol. 66, Is. 3. - С. 285-294. - ISSN 0265931X (ISSN) , DOI 10.1016/S0265-931X(02)00132-7
Ключевые слова (''Своб.индексиров.''): deep-well injection of radionuclides--nuclear reactor--surface and ground waters--tritium--yenisei river basin--cooling water--nuclear reactors--sediments--surface waters--river basins--tritium--carbon 14--surface water--tritium--groundwater--nuclear power plant--radioactive pollution--surface water--tritium--article--catchment--measurement--radioactive contamination--river--sediment--environmental monitoring--geologic sediments--mining--power plants--reference values--russia--tritium--water pollutants, radioactive--russian federation--tritium
Аннотация: This paper reports an investigation of the tritium content in the surface waters of the Yenisei River basin near the Mining and Chemical Combine (MCC). In 2001 the maximum tritium concentration in the Yenisei River did not exceed 4 В± 1 Bq l-1, which is consistent with the data of 1998-99. However, it has been found that there are surface waters containing enhanced tritium as compared with the background values for the Yenisei River. For instance, in the Ploskii Stream and the Shumikha River the maximum tritium concentrations amount to 168 and 81 Bq l-1, respectively. The source of tritium in these surface waters is the last operating reactor at the MCC, which still uses the Yenisei water as coolant. In water and sediment samples of the Bolshaya Tel River (a tributary of the Yenisei River) the tritium content turned out to be at least 10 times higher than the background values for the Yenisei River. The measurements conducted at the RPA RADON (Moscow) revealed not only tritium but also the artificial radionuclide 14C in the Bolshaya Tel samples. The data obtained suggest that the Bolshaya Tel River receives the major part of tritium from sediments rather than from the water catchment area. This allows the conclusion that there is water exchange between the surface waters and the radioactively contaminated underground horizons of the "Severny" testing site. В© 2002 Elsevier Science Ltd. All rights reserved.
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20.

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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