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S. P. Zakharkov V. B. Lobanov T. N. Gordeichuk T. V. Morozova E. A. Shtraikhert 《Oceanology》2012,52(3):354-363
To evaluate the structure and photosynthetic activity of the phytoplankton of the northwestern part of the Sea of Japan, the
results of the surveys conducted from February 26 to March 9, 2003, during the 30th cruise of the R/V Akademik Lavrentyev were used. The species composition was considered taking into account the influences of the hydrological conditions. In particular,
the studied water area was divided into four zones with various sizes of the mixed layer depth (MLD). An inverse relationship
between the MLD and the content of chlorophyll a (Chl a) in various zones was established. The diatom algae were the basic dominants of the composite structure of the phytoplankton
everywhere. It is revealed that, at a MLD increase, smaller forms of microalgae receive development. The intrapopulation relations
are caused by the adaptation of various species of phytoplankton to the influence of external factors, among which the size
of MLD is fundamental. 相似文献
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Zakharkov S. P. Gordeichuk T. N. Shambarova Yu. V. Shtraikhert E. A. 《Water Resources》2021,48(2):300-309
Water Resources - The effect caused by the typhoon Goni in the coastal water of Posyet Bay, the Sea of Japan, is considered. In nearshore expeditions, profilograph SBE-19plus was used to measure... 相似文献
3.
Glukhovets D. I. Salyuk P. A. Artemiev V. A. Shtraikhert E. A. Zakharkov S. P. 《Oceanology》2021,61(6):872-880
Oceanology - Areas with different values of the bio-optical characteristics of the surface water layer and different temperature and salinity distributions obtained during a Transatlantic transect... 相似文献
4.
Using the data obtained in 1999–2000 during the spring bloom of phytoplankton (late May–early June), the variability of the pigment concentrations, the phytoplankton biomass and species compositions, and the hydrological conditions on the eastern shelf of Sakhalin Island was studied. The study resulted in revealing 135 microalgae species belonging to eight divisions. The most diversely presented were the Dinophyta dinoflagellates and Bacillariophyta diatoms (70 and 53 species, respectively). The concentration of chlorophyll a in the euphotic zone amounted, on average, to 3.8 mg/m3 in 1999 and 2.4 mg/m3 in 2000. It was shown that, in the northern and southern parts of the coastal zone, the concentration of chlorophyll a and the phytoplankton density in the spring were considerably different and depended on the hydrological conditions. In the north, their maximum values were found in the area of the depth break and were determined by the tidal mixing. The increased algae concentrations and temperature inversions at depths of 400–600 m confirm the downslope sliding of the near-bottom shelf waters. In the southern part, the high phytoplankton concentrations in the surface layer in 1999 confirmed by the monthly averaged estimates from the SeaWiFS satellite color scanner were caused by the abnormal northward propagation of the Soya Current waters and by intense tidal mixing. 相似文献
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S. P. Zakharkov E. A. Shtraikhert Y. V. Shambarova T. N. Gordeichuk X. Shi 《Oceanology》2016,56(3):444-451
The spatial variability of chlorophyll a concentrations was studied from the data of two near-shore expeditions and the cruise of the R/V Akademik M.A. Lavrent’ev in October–November 2010 over the northwestern part of the Sea of Japan. The sections across eddies showed a maximum of chlorophyll a at a depth of 40 m. According to the data from the cruise, the chlorophyll a concentration was maximum in the north of the sea and decreased to the south. In parallel, the procedures for chlorophyll a determination were compared for spectrophotometry with a fluorescence probe and a fluorescence flow system. The probe data of chlorophyll a fluorescence showed a high correlation with the chlorophyll a concentrations by spectrophotometry. On the contrary, data on chlorophyll a concentrations from spectrophotometry did not agree with those from the flow system. It was shown that a fluorimeter in the flow system recorded dissolved organic matter along with the chlorophyll a fluorescence. 相似文献
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