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V. V. Pendin L. V. Zabotkina V. O. Podborskaya V. V. Nevecherya 《Water Resources》2017,44(7):995-1005
Examples of the development of monitoring systems are considered for the case of local historical natural–technical systems of various classification levels. The authors’ scheme of classification of local HNTSs is given. The classification is aimed to systematize the diverse data on various HNTSs to form a single interrelated system basing on common principal features. Monitoring systems of local HNTSs of the Borodino Battlefield, Old Ryazan City, and Rostov Kremlin are used as examples to demonstrate their relevancy for solving problems of the complex of protection measures. 相似文献
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A. I. Kopylov A. F. Sazhin E. A. Zabotkina A. V. Romanenko N. D. Romanova P. R. Makarevich M. P. Wenger 《Oceanology》2016,56(6):789-798
The paper considers the concentrations and functional characteristics of viruses, bacteria, and heterotrophic nanoflagellates determined for the first time in the Laptev Sea in August-September, 2014. The abundance of bacteria, viruses, and heterotrophic nanoflagellates varied from 110.1 × 103 to 828.4 × 103 cells/mL, from 384.2 × 103 to 2932.8 × 103 particles/mL, and from 108 to 651 cells/mL, respectively. The daily bacterioplankton production varied from 4.2 × 103 to 381.7 × 103 cells/mL, with an average of 117.6 × 103 cells/mL. Electron transmission microscopy has for the first time shown that the frequency of visibly infected bacterial cells varied from 0.2 to 2.0% (0.8% on average) of NB. The average virus-induced mortality of bacteria was 6.3% of bacterioplankton production, with variations ranging from 1.4 to 16.9%. Grazing on bacteria by heterotrophic nanoflagellates contributed more to bacteria mortality than virus-induced bacterial lysis. By grazing on bacteria, heterotrophic nanoflagellates consumed large quantities of viruses located on the surface and inside bacterial cells. 相似文献
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Kopylov A. I. Kosolapov D. B. Zabotkina E. A. Romanenko A. V. Sazhin A. F. 《Oceanology》2021,61(2):220-232
Oceanology - The distribution of heterotrophic bacteria, viruses, and heterotrophic nanoflagellates was studied in the shelf waters of the East Siberian Sea along the meridional transect from the... 相似文献
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A.?I.?KopylovEmail author A.?F.?Sazhin E.?A.?Zabotkina A.?V.?Romanenko N.?D.?Romanova 《Oceanology》2017,57(1):105-113
The distribution of structural and functional characteristics of virioplankton in the north of the Ob River estuary and the adjacent Kara Sea shelf (between latitudes 71°44′44″ N and 73°45′24″ N) was studied with consideration of the spatial variations in the number (N B) and productivity (P B) of bacteria and water properties (temperature, salinity, density) by analyzing samples taken in September 2013. The number of plankton viruses (N V), the occurrence of visible infected bacteria cells, virus-induced mortality of bacteria, and virioplankton production in the studied region varied within (214?2917) × 103 particles/mL, 0.3?5.6% of NB, 2.2?64.4% of P B, and (6?17248) × 103 particles/(mL day), respectively. These parameters were the highest in water layers with a temperature of +7.3–7.5°C, salinity of 3.75?5.41 psu, and conventional density (στ) of 2.846?4.144. The number of bacterioplankton was (614?822) × 103 cells/mL, and the N V/N B ratio was 1.1?4.5. A large amount of virus particles were attached to bacterial cells and suspended matter. The data testify to the considerable role of viruses in controlling the number and production of heterotrophic bacterioplankton in the interaction zone of river and sea waters. 相似文献
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Oceanology - We studied vertical distribution of bacteria and viruses in different layers of the Arctic sea ice drilled at the North Pole. The sampled multi-year ice was characterized by uneven... 相似文献
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