. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. 190 BIOLOGY OF THE SEAS OF THE JUNE JULY AUG SEPT OCT , 11U105, , 105. Fig. 83. Oxygen content of Kandalaksha Bay water. A Annual course of oxygen content (percentage of saturation) in the open Sea off Umba; ? Cross section from Umba to Keret (Sokolova, 1939). of freezing; but we cannot yet rule out the equal possibility of the onset of the summer-autumn stagnation in the bottom layer itself. On the other hand Table 80 100 150 200 250 101-5 1000 950 88-1 Depth, m 5 25 50 Percentage of oxyg
. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. 190 BIOLOGY OF THE SEAS OF THE JUNE JULY AUG SEPT OCT , 11U105, , 105. Fig. 83. Oxygen content of Kandalaksha Bay water. A Annual course of oxygen content (percentage of saturation) in the open Sea off Umba; ? Cross section from Umba to Keret (Sokolova, 1939). of freezing; but we cannot yet rule out the equal possibility of the onset of the summer-autumn stagnation in the bottom layer itself. On the other hand Table 80 100 150 200 250 101-5 1000 950 88-1 Depth, m 5 25 50 Percentage of oxygen 113-9 115-3 101-8 the presence of red clay in the White Sea makes it possible to presume an accu- mulation of carbon dioxide in the bottom layer,-which obstructs an abundant development of bottom life in the deep part of the Sea. A. Trofimov and Ya. Golubchik (1947) have produced some mean indices {Table 81) of chemical conditions in the central part of the White Sea in springtime. Table 81 Depth Percentage m of oxygen pH Phosphates Nitrates 0 961 8 03 140 52 10 960 8-03 14-3 51 25 94-5 8-05 14-6 55 50 91-8 803 19-9 63 100 87-0 8 03 — — 200 820 8 03 220 70. 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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