. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 700 60O 500 400. 300 200 (OO DAYS FIG. 2. Series 47 to 50. Influence of varying concentration of participate matter. Filtered sea water with different amounts of Nitzschia Clostcrium added. Decomposition in the dark. Time in days. Different forms of nitrogen in micro- grams (gamma) per liter. The nature of the suspended organic matter also determines the duration of the cycle, as the next series show. Series 43 and 45 (Figs. 3 and 4) were set up with the same harbor water; in 43 was suspended a small amount of mixed plankton
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 700 60O 500 400. 300 200 (OO DAYS FIG. 2. Series 47 to 50. Influence of varying concentration of participate matter. Filtered sea water with different amounts of Nitzschia Clostcrium added. Decomposition in the dark. Time in days. Different forms of nitrogen in micro- grams (gamma) per liter. The nature of the suspended organic matter also determines the duration of the cycle, as the next series show. Series 43 and 45 (Figs. 3 and 4) were set up with the same harbor water; in 43 was suspended a small amount of mixed plankton, in 45 a large amount of yeast. In No. 43 the nitrogen cycle proceeded in the normal way, but in Xo. 45 nitrite appeared only very slowly, with no formation of nitrate when the experiment was terminated after 5^> months. It has been shown that the length of the decomposition cycle depends upon the source of the water and it has been suggested that this might involve the action of growth-promoting substances upon the bacterial flora. Series 44 and 46 (Figs. 3 and 4) were planned as an approach to this question. Two samples of harbor water, the same as in Nos. 43. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
