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This paper analyzes the composition and distribution of coastal phytoplankton in the western portion of the Middle Caspian
in the context of changes in the hydrological and hydrochemical regime under the conditions of the rising level of the Caspian
Sea. It has been demonstrated that the changes in the water regime led to an increase in the taxonomic diversity, the quantitative
characteristics of phytoplankton, and the succession of the size groups. 相似文献
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I. I. Balega Yu. Yu. Balega L. T. Gasanova V. V. Dyachenko A. F. Maksimov E. V. Malogolovets D. A. Rastegaev Z. U. Shkhagosheva 《Astrophysical Bulletin》2013,68(1):53-56
We present the measurements of positional parameters of 194 nearby binary stars performed at the 6-m BTA telescope of the SAO RAS from 2002 through 2006 applying the speckle interferometric technique. The observations were conducted at central filter wavelengths ranging from 545 to 800 nm using a speckle interferometer equipped with a fast CCD and a three-stage image intensifier. A significant part of the observed systems (80 stars) are pairs, the duality of which was discovered or suspected from the Hipparcos satellite observations. The remaining stars are visual binaries and interferometric binary systems with orbital motion period estimates from several to tens of years, as well as the pairs with slow relative motion of the components, used for gaging the image scales and positional angle calibrations. 相似文献
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