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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T.A., Trofimova E.A., Bolsunovsky A.Y., Anishenko O.V.
Заглавие : Experimental estimation of the possible use of submersed macrophytes for biotesting bottom sediments of the Yenisei River
Колич.характеристики :12 с
Коллективы : Russian Foundation for Basic Research [14-14-00076]; "Biological Diversity" program of the Presidium of the Russian Academy of Sciences [30.5]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2014. - Vol. 7, Is. 4. - С. 410-421. - ISSN 1995-4255, DOI 10.1134/S1995425514040131. - ISSN 1995-4263
Примечания : Cited References: 23. - We thank the staff of the Radioecology Laboratory and the Analytical Laboratory, Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, for gamma ray spectrometric and chemical analysis of the samples. This study is supported in part by the Russian Foundation for Basic Research, project no. 14-14-00076, and by "Biological Diversity" program no. 30.5 of the Presidium of the Russian Academy of Sciences.
Предметные рубрики: MYRIOPHYLLUM-SPICATUM
TOXICITY
SENSITIVITY
GROWTH
EXPOSURE
ATRAZINE
QUALITY
WATERS
TESTS
Ключевые слова (''Своб.индексиров.''): elodea canadensis--myriophyllum spicatum--bottom sediments--toxicity--technogenic radionuclides--heavy metals--biogens
Аннотация: The laboratory testing of bottom sediments (BSs) from the Yenisei River containing different concentrations of technogenic radionuclides, heavy metals, and biogenic elements (N and P) based on aquatic such plants as Elodea canadensis (Canadian waterweed) and Myriophyllum spicatum (Eurasian watermilfoil) has revealed a higher sensitivity of roots to the general quality of BSs than shoots: shoot length (9%) root length (11%) root number (15%) in M. spicatum; shoot length (22%) root length (42%) root number (44%) in E. canadensis. In contrast to M. spicatum, the growth parameters of roots and shoots in E. canadensis have differed in a significant statistical manner between most BS samples. A reverse correlation has been found between the increase in shoot length and the activity of technogenic radionuclides in BSs, which is mostly significant in E. canadensis (r (2)
WOS
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T.A., Trofimova E.A., Dementyev D.V., Bolsunovsky A.Y.
Заглавие : Bioaccumulation, inter-organ distribution, and retention of waterborne and dietary Am-241 in silver crucian carp
Колич.характеристики :12 с
Место публикации : Toxicol Environ. Chem.: TAYLOR & FRANCIS LTD, 2014. - Vol. 96, Is. 2. - С. 243-254. - ISSN 0277-2248, DOI 10.1080/02772248.2014.941368. - ISSN 1029-0486
Примечания : Cited References: 25
Предметные рубрики: YENISEI RIVER
TELEOST FISH
RADIONUCLIDES
METALS
AMERICIUM
EXPOSURE
ELEMENTS
ASSIMILATION
ELASMOBRANCH
DEPURATION
Ключевые слова (''Своб.индексиров.''): americium-241--assimilation--carassius auratus gibelio--force-feeding
Аннотация: The bioaccumulation of actinide Am-241 from food and water in bodies of freshwater fish (Carassius auratus gibelio, silver crucian carp) has been investigated in laboratory experiments. Homogenized biomass of submerged macrophytes labeled with Am-241 was injected into the fish gullet. Internal organs and tissues of crucian carp could be ranked according to activity concentration of dietary Am-241 after depuration of the digestive tract as follows: liver gonads bones muscles. Accumulation of waterborne Am-241 in internal organs and tissues of crucian carp mainly occurred via the digestive tract. While the concentration of Am-241 in liver of crucian carps decreased during depuration time, its concentration in bones increased indicating slower transfer of Am-241 to skeleton compared to muscles and liver. The retention of dietary Am-241 in the bodies of crucian carp reached 35%-46% of ingested Am-241: 20%-31% was retained in liver, 0.6%-0.8% in skeleton, and 1.4%-2.0% in muscles. The concentration factor of Am-241 from water was 0.4 for the whole body, 0.3 for liver, 0.01 for muscles, and 0.01 for skeleton. Trace amounts of Am-241 were recorded in viscera and muscles of a wild population of silver crucian carp inhabiting a radioactively contaminated part of the Yenisei River.
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Scopus
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tolomeyev A.P., Zadereev Y.S.
Заглавие : An in situ method for the investigation of vertical distributions of zooplankton in lakes: test of a two-compartment enclosure
Колич.характеристики :8 с
Место публикации : Aquat. Ecol.: SPRINGER, 2005. - Vol. 39, Is. 2. - P181-188. - ISSN 1386-2588, DOI 10.1007/s10452-004-5732-0
Примечания : Cited References: 21
Предметные рубрики: MIGRATION
DAPHNIA
RADIATION
COPEPODS
EXPOSURE
PATTERNS
LIGHT
Ключевые слова (''Своб.индексиров.''): anoxic hypolimnion--solar radiation--stratified lake--vertical migration--zooplankton
Аннотация: Two-section enclosures were designed for the investigation of the effect of various physicochemical and biological factors on vertical distribution of zooplankton in situ. The framework of the enclosure was a cylindrical polyethylene column without any partitions inside, in which the isolation of animals in different sections after in situ exposure was achieved by pinching the flexible central part of the column. Enclosures were tested at the brackish stratified meromictic Lake Shira (Russia, Khakasia). The absence of fish and carnivorous zooplankton in the lake suggests that the vertical distribution of zooplankton is mainly determined by physicochemical gradients in the water column. Experiments and field observations demonstrated that all age and size groups of Arctodiaptomus salinus and Brachionus plicatilis strongly avoided surface layers during the daylight. The escape of zooplankton from the anoxic hypolimnion was less active. Statistically significant avoidance was observed only for copepodites C4-C5 and females of A. salinus. The relatively simple construction of the columns and easy handling during the experiment were the factors that favoured the use of this device to perform in situ basic tests of the effect of different factors on the vertical distribution of zooplankton.
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