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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) : Barkhatov, Yu. V., Ushakova S. A., Shikhov V. N., Evgrafova, S. Yu., Tikhomirov A. A., Degermendzhi A. G.
Заглавие : The Influence of Temperature and Humidity on Greenhouse Gas Emission in Experiments on Imitation of the Full Vegetation Cycle of Tundra Ecosystems
Колич.характеристики :3 с
Коллективы : Russian Foundation for Basic Research; Krasnoyarsk Krai Government; Krasnoyarsk Regional Fund of Science [17-45-240884]; Russian Foundation for Basic Research [16-04-01677-a]; Institute of Biophysics, Siberian Branch, Russian Academy of Sciences [56.1.4.]
Место публикации : Dokl. Earth Sci.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2018. - Vol. 483, Is. 2. - С. 1539-1541. - ISSN 1028-334X, DOI 10.1134/S1028334X18120115. - ISSN 1531-8354(eISSN)
Примечания : Cited References:15. - This study was supported by the Russian Foundation for Basic Research, the Krasnoyarsk Krai Government and the Krasnoyarsk Regional Fund of Science (project no. 17-45-240884), the Russian Foundation for Basic Research (project no. 16-04-01677-a), and the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, governmental assignment, theme no. 56.1.4. for 2013-2020.
Предметные рубрики: POLYGONAL TUNDRA
METHANE EMISSION
CARBON
DELTA
LAKES
Аннотация: Laboratory experiments were conducted in a hermetically sealed growth chamber with two soil samples obtained from the arctic tundra zone with different levels of moisture. Samples were maintained at a growing season typical of the region from which they were taken, and for the sample with a high level of moisture it was made twice: with the temperature in accord with natural conditions and one increased by 2 degrees C. It has been shown that heating of the overmoistened tundra soil by 2 degrees C can increased the average carbon dioxide emissions by almost two times (from 75 to 100-150 mg m(-2) h(-1)). Upon the application of heat, no significant increase in methane emission was observed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fefilova, Elena, Dubovskaya, Olga, Kononova, Olga, Frolova, Larisa, Abramova, Ekaterina, Nigamatzyanova, Gulnara
Заглавие : Data on taxa composition of freshwater zooplankton and meiobenthos across Arctic regions of Russia
Колич.характеристики :7 с
Коллективы : Institute of Biophysics of the Federal Research Center "Krasnoyarsk Science Center" of the Siberian Branch of the Russian Academy of Sciences [51.1.1]; Siberian Federal University [FSRZ-2020-0006]; Russian Science FoundationRussian Science Foundation (RSF) [20-17-00135]; Kazan Federal University [671-2020-0049]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-05-00406]; Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [20-04-00145_a]
Место публикации : Data Brief: ELSEVIER, 2021. - Vol. 36. - Ст.107112. - ISSN 2352-3409, DOI 10.1016/j.dib.2021.107112
Примечания : Cited References:17. - The work was performed in part as Federal Tasks to the Department of Animal Ecology of the Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences (AAAA-A17-117112850235-2) (to EF and OK), to the Institute of Biophysics of the Federal Research Center "Krasnoyarsk Science Center" of the Siberian Branch of the Russian Academy of Sciences (project No. 51.1.1) and the Siberian Federal University (project No. FSRZ-2020-0006) (to OD). The paleolimnological part of this work was supported by grant from Russian Science Foundation (project 20-17-00135). L. Frolova and G. Nigamatzyanova were supported by the subsidy allocated to Kazan Federal University for the state assignment #671-2020-0049 in the sphere of scientific activities and by the Russian Foundation for Basic Research (grant 18-05-00406). The work was partly financially supported by the Russian Foundation for Basic Research (RFBR) grant: 20-04-00145_a (to EF). Monitoring investigations in the Lena River Delta were conducted under the framework of Russian-German, "Lena" expeditions (Alfred Wegener Institute, Potsdam, Germany) with logistic and technical support of Scientific Research Station "Samoylov Island" (the Trofimuk Institute of Petroleum-Gas, Geology and Geophysics SB RAS, Novosibirsk) (to EA).
Предметные рубрики: CRUSTACEA
RECORDS
LAKES
Аннотация: We present the presence/absence species list (Table 1) of rotifer, cladoceran, and copepod (Calanoida, Harpacticoida, and Cyclopoida) fauna from seven Arctic regions of Russia (the Kola Peninsula, the Pechora River Delta, the Bolshezemelskaya tundra, the Polar Ural, the Putorana Plateau, the Lena River Delta, and the Indigirka River Basin) based on our own and literature data. Our own records were obtained by analyzing samples of zooplankton, meiobenthos, and two cores of bottom sediments (from the Kola Peninsula and the Bolshezemelskaya tundra lakes) that we collected once in July or August in 1992, 1995-2017. To supplement the list, we used relevant literature with periods of research from the 1960s to the 2010s. The list is almost identical to "Dataset 2: Zooplankton and Meiofauna across Arctic Regions of Russia", which was analyzed but not published in [1]. The detailed analysis of this list revealed the specific composition of the aquatic fauna associated with the climatic and geographical factors [1]. The data provide information on the current state of biodiversity and species richness in Arctic fresh waters and can serve as the basis for monitoring these environments and predicting how they are likely to change in the future. (C) 2021 The Author(s). Published by Elsevier Inc.
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