. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. 2000 WOO 6000 DEPTH, no 8000 10000 Fig. 346. Decreases in numbers of species (percentage basis) in certain groups of marine bottom-living inverte- brates with increase of depth (Zenkevitch, Birstein and Belyaev). A Polychaeta; ? Pericardia; ? Pogonophora; D Asteroidea; E Holothurioidea. NUM8ER OF SPECI6S I000 3000 ?000 I000 3000 5000 I0000- BENTHOS .* PLANKTON Fig. 347. Diagram of change in qualitative composition of oceanic plankton and benthos with depth (Zenkevitch).. Please note that these imag
. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. 2000 WOO 6000 DEPTH, no 8000 10000 Fig. 346. Decreases in numbers of species (percentage basis) in certain groups of marine bottom-living inverte- brates with increase of depth (Zenkevitch, Birstein and Belyaev). A Polychaeta; ? Pericardia; ? Pogonophora; D Asteroidea; E Holothurioidea. NUM8ER OF SPECI6S I000 3000 ?000 I000 3000 5000 I0000- BENTHOS .* PLANKTON Fig. 347. Diagram of change in qualitative composition of oceanic plankton and benthos with depth (Zenkevitch).. 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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