. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. GENERAL CHARACTERISTICS OF FAR EASTERN SEAS 737. Fig. 361. Extent of taxonomic isolation of deep-water bottom-living fauna of the northern and southern halves of the Oceans. The lower chart for depths less than 2,000 m, upper chart for depths more than 4,000 m (Vinogradova). horizontal distribution. It is most remarkable that the deep-water fauna is to a great extent both bipolar (Fig. 362) and amphi-boreal in its distribution. The circumtropical distribution of many members of the deep-water fauna
. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. GENERAL CHARACTERISTICS OF FAR EASTERN SEAS 737. Fig. 361. Extent of taxonomic isolation of deep-water bottom-living fauna of the northern and southern halves of the Oceans. The lower chart for depths less than 2,000 m, upper chart for depths more than 4,000 m (Vinogradova). horizontal distribution. It is most remarkable that the deep-water fauna is to a great extent both bipolar (Fig. 362) and amphi-boreal in its distribution. The circumtropical distribution of many members of the deep-water fauna also needs some explanation. What factors restrict its distribution southwards and northwards? Change of pressure may restrict the upward and downward movements of ??. 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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