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481.
In October and November of 2010, the gelatinous macroplankton in the northwestern Black Sea and at the Crimean shelf was represented by the scyphozoan jellyfish Aurelia aurita, three species of ctenophores (Beroe ovata, Mnemiopsis leidyi, and Pleurobrachia pileus), and three species of hydromedusae. A. aurita was more common at the shelf, M. leidyi and P. pileus prevailed at the deeper sea stations, and B. ovata was almost ubiquitous with a biomass from below 1 to 49 g/m2 A. aurita, which had an average biomass of 82–224 g/m2, was dominant at all the stations. M. leidyi, which had a biomass from below 1 to 115 g/m2, was recorded in October at only 14 of the 52 stations and in November at 20 of the 46 stations. The highest biomass of M. leidyi in October (105 to 116 g/m2) was recorded in the deep sea areas; in November, it was also the highest in these areas, but it reached at most 100 g/m2. The average daily ration of Aurelia ranged from 19.4 to 27.3 mg/m2 in October and from 7.0 to 17.2 mg/m2 in November; in both cases, it was insufficient to provide for the minimal physiological requirements. The average daily ration of the Mnemiopsis population (2.8–20.5 mg of zooplankton per m2) was invariably more than sufficient to provide for the minimal physiological requirements. Both predatory species together consumed less than 5% of the daily zooplankton production of the sea. 相似文献
482.
483.
Shakirov R. B. Cuong Do Huy Obzhirov A. I. Valitov M. G. Lee N. S. Legkodimov A. A. Kalgin V. Yu. Yeskova A. I. Proshkina Z. N. Telegin Yu. A. Storozhenko A. V. Ivanov M. V. Pletnev S. P. Sedin V. T. Bulanov A.V. Shvalov D. A. Lipinskaya N. A. Bovsun M. A. Makseev D. S. Thanh Nguyen Trung Anh Le Duc Luong Le Duc 《Oceanology》2021,61(1):147-149
Oceanology - Abstract—The paper gives brief results of comprehensive studies in the South China Sea obtained from a joint Russian–Vietnamese expedition in November 2019 (cruise 88 of... 相似文献
484.
Krek A. V. Krek E. V. Ezhova E. E. Paka V. T. Kondrashov A. A. Danchenkov A. R. Bagirov N. E. Kudryavtzeva E. A. Bubnova E. S. Sergeev A. Yu. Aleksandrov S. V. 《Oceanology》2021,61(4):581-583
Oceanology - New data on the structure of the water column, upper layer of bottom sediments, and biological communities of the Gdansk and Gotland deeps and the Gulf of Finland in the Baltic Sea... 相似文献
485.
Demidov A. B. Gagarin V. I. Eremeeva E. V. Artemiev V. A. Polukhin A. A. Shchuka S. A. Grigoriev A. V. Khrapko A. N. Flint M. V. 《Oceanology》2021,61(5):645-661
Oceanology - Spatial and vertical variability of primary production (PP) and Chl a were studied in the framework of the 76th cruise of R/V Akademik Mstislav Keldysh to the Kara Sea from July 7 to... 相似文献
486.
Kuzmenko N. V. Tsyrlin V. A. Pliss M. G. 《Izvestiya Atmospheric and Oceanic Physics》2021,57(10):1271-1292
Izvestiya, Atmospheric and Oceanic Physics - It is known that in mammals living in climates other than tropical, hemoconcentration is usually observed in winter. The average modern person actively... 相似文献
487.
Izvestiya, Atmospheric and Oceanic Physics - Zonally averaged characteristics of the North Atlantic (NA) thermohaline circulation are investigated in different phases of the Atlantic Multidecadal... 相似文献
488.
Average concentrations of Pb, Zn, Cu, and other metals, as well as S and As, were calculated for the Aue granitic cupola,
the contact aureole of which hosts the large vein-type uranium deposit of Schlema-Alberoda and the Schneeberg uranium-base
metal deposit (Erzgebirge, Germany). The cupola was exposed by mine workings and boreholes, which provided an opportunity
to evaluate variations in the abundances of metals in the granites over a vertical interval of more than 2.5 km and estimate
their losses in the upper oxidized part of the investigated volume of the cupola (coefficient of iron oxidation, KO
Fe, increases in the granites from bottom to top from 7 to 70%) compared with the lower unaltered and unoxidized part (with
a KO
Fe plateau at about 5%). The average concentrations of metals in the upper part of the cupola are lower than those in the lower
part by a factor of 2.5 for Pb, 1.56 for Zn, 1.45 for Cu, 1.3 for Co, etc. A similar decrease in the abundances of ore elements
along the vertical section associating with the relative epigenetic alteration and oxidation of the granite was previously
described by us for U and Th and for the components of high-temperature ores, W, Sn, and Mo. The removal of ore elements from
the granite was accompanied by a decrease in the bulk contents of sulfur and arsenic by a factor of 1.35 and 1.65, respectively.
The leaching of trace metals from the granites of the upper part of the Aue cupola was followed by their partial redeposition
above the cupola in the ore veins of the Schlema and Schneeberg deposits.
Original Russian Text ? Vikt. L. Barsukov, N.T. Sokolova, O.M. Ivanitskii, 2006, published in Geokhimiya, 2006, No. 9, pp.
967–982. 相似文献
489.
490.