. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. THE ARAL SEA 661 sea-weeds go down much deeper than Zostera, and these sea-weeds (mainly Vaucheria dichotoma) form a thick cover on grey mud down to depths of 26 m. The Charial sea-weed Tolypella aralica forms abundant beds on black. ?2? 2500 Fig. 312. Quantitative distribution of plankton in the Aral Sea in summer 1932-33, number of specimens per litre (Behning). ooze which smells of hydrogen sulphide, mainly in bays and inlets more or less separated from the Sea. The thin brown film covering the
. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. THE ARAL SEA 661 sea-weeds go down much deeper than Zostera, and these sea-weeds (mainly Vaucheria dichotoma) form a thick cover on grey mud down to depths of 26 m. The Charial sea-weed Tolypella aralica forms abundant beds on black. ?2? 2500 Fig. 312. Quantitative distribution of plankton in the Aral Sea in summer 1932-33, number of specimens per litre (Behning). ooze which smells of hydrogen sulphide, mainly in bays and inlets more or less separated from the Sea. The thin brown film covering the mud soils comprises a huge number of diatomaceous algae. The qualitative composition and quantitative distribution of zoobenthos (Fig. 313). Qualitatively zoobenthos is as poor as plankton; it comprises only 48 forms: Foraminifera Nematoda (free-living) Turbellaria Oligochaeta Bryozoa Harpacticoida Ostracoda 2 species 7 species 12 species 3 species 1 species 5 species 3 species Amphipoda Gastropoda Lamellibranchiata Trichoptera Chironomidae Hydracarina 1 species 2 species 4 species 2 species 6 species 1 species. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Zenkevich, L. A. (Lev Aleksandrovich), 1889-1970. New York, Interscience Publishers
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